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Actinolite is a member of a series that contains varying amounts of iron and magnesium. Tremolite is
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Although adamite occurs in many localities, it's very rarely cut as a gem. This mineral is much too
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Agate is a variety of chalcedony that exists in many colors and is often commercially dyed. Agate is
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Albite, usually colorless but sometimes yellow, pink, gray or reddish. Translucent albite is sometim
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“Emerald by day, ruby by night,” alexandrite is well known for displaying one of the most remarkable
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Bright, silvery metallic cabochons of algodonite and domeykite are attractive and unusual. Faceted p
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Almandine is perhaps the most common garnet species. Forming series with pyrope and spessartine garn
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Amazonite is a variety of microcline, which is itself a variety of feldspar.
Amber is the hardened resin of ancient pine trees. This organic substance is most well-known for the
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Amblygonite gems are usually pale straw yellow. Although they are too soft and cleavable to make goo
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Amethyst is crystalline quartz in colors ranging from pale lilac to deep reddish purple. The Februar
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Ametrine is a variety of quartz that displays bands of both amethyst purple and citrine yellow. Thes
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Ammolite is a rare, iridescent, gem-quality material cut from the fossilized shells of extinct sea c
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Large colorless crystals of Analcime are a great rarity although small transparent crystals are abun
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Anatase occurs in many beautiful colors, such as deep indigo and amber yellow. However, these rare g
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Strongly pleochroic, andalusite can show shades of green, brown, and red when viewed from different
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These feldspars are rarely encountered in gem form. Andesine's occurrence is widespread throughout t
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Andradite is one of the most sought after garnet species. Although more sources have been discovered
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Although anglesites with pale colors can show great dispersion and brightness, they’re difficult to
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Rare and difficult to cut, anhydrite is seldom faceted. However, this material can be carved into be
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Anorthite is the most calcic of the plagioclases, and sometimes makes up a distinctive rock known as
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Although too brittle for most jewelry use, properly cut apatite gems are truly magnificent. A collec
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Although not suitable for jewelry, apophyllite is a popular collector's piece. Perhaps the whitest o
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Named after the color of sea water, aquamarine is the blue to blue-green member of the beryl family.
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Aragonite is more commonly found as a constituent of pearl and shell nacre than as a crystal suitabl
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Soft and brittle, rare augelites are difficult to cut and unsuitable for wear. Faceted transparent p
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When faceted, the members of the axinite mineral group are usually intensely trichroic, with conside
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Collectors prize deep blue azurite crystals, but faceted gems are extremely rare. However, azurite f
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Massive white barite (also called known as baryte) looks like marble and could be used for decorativ
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Bayldonite is a nondescript greenish material that has been cut into cabochons by enterprising colle
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With dispersion higher than diamond and sapphire blue body color, benitoite is one of the most attra
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The beryls are among the most popular, and also the most expensive, of all gems. A wide range of col
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Difficult to facet and typically colorless, beryllonite is a rare collector’s gem. Some specimens ca
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Extremely rare as a cut gem, even in very complete collections. Many of the minerals in the tantalit
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Also known as heliotrope, bloodstone is the traditional March birthstone. This dark green, opaque ch
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Cut boleite is strictly for collectors, since it is soft and very rare. Faceted gems of any transpar
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With light blue and green colors, no cleavage, and high hardness, boracite is an uncommon mineral. U
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Bornite is suitable only for cabochons. The bronzy color rapidly tarnishes in air to a magnificent i
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Brazilianite's lovely green to yellow colors make it a must for gem collectors. Large faceted stones
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Breithauptite is a curiosity cut for collectors, although it could be worn with care in jewelry. The
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Brookite usually occurs in very dark colors, transparent only in small fragments. Cuttable crystals
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Brucites are extremely difficult to cut. Although too soft for jewelry use, faceted pieces would be
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Bustamite is very similar in appearance and properties to rhodonite. The Japanese crystals are very
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Bytownite is found in basic plutonic rocks, some metamorphic rocks, and meteorites.
Several species of marine mollusks produce stony growths called calcareous concretions or non-nacreo
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Calcite is common and abundant throughout the world. The material has little intrinsic value since i
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The material usually seen on the market as “canasite” is purplish in color. It is frequently confuse
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Cancrinite is one of the most attractive of all opaque or translucent gem materials. It is a bit too
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The best-known and generally least expensive variety of chalcedony is carnelian. It ranges in color
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Cassiterite is a durable gemstone with tremendous dispersive fire, especially visible in properly cu
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The only reported cut catapleiite is from Mte. Ste. Hilaire, Quebec, Canada, in the form of tiny col
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Soft, fragile, and hard to cut, celestite or celestine is seldom seen in gem collections. These gems
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A little-known gem material of truly exquisite color, sky-blue ceruleite takes a very high polish ea
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As beautiful as a diamond, a faceted cerussite actually has higher dispersion and usually excellent
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Although faceting chabazite isn't too difficult, it's too soft for jewelry. However, only a handful
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Technically, chalcedony (kal SED' uh nee) is any form of microcrystalline or cryptocrystalline quart
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Chambersite is an exceedingly rare mineral. Although it has properties suitable for jewelry use, its
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With light to medium dark purple colors and swirling patterns, charoite is one of the few gemstones
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One of the most prized ornamental materials in China, chicken-blood stone has been used for centurie
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Cut childrenite is a great rarity, and all gems are small. Cut eosphorite is more abundantly availab
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Chiolite makes a challenging gem. It's difficult to cut, extremely rare, and has little appeal. It's
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Chromite is shiny and black, and makes a curious-looking cabochon with no special attraction. Occasi
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Although many gems show a cat’s eye effect, when the term “cat’s eye” is used alone, it always refer
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Pure blue chrysocolla is extremely soft but interesting to gem collectors. On the other hand, chryso
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Marketed as "Gem Silica" this relatively rare, blue to blue-green, opaque to near transparent materi
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Chrysoprase is apple-green chalcedony that derives its color from nickel. Its hardness and striking
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Magnificent red cinnabar is extremely soft and fragile, so faceted material is rare. It's cut primar
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Citrine is the yellow to red-orange variety of crystalline quartz. Clever marketing and the rise of
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Clinochlore is a family of minerals in the chlorite group. To date, only kämmerite and sheridanite v
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Cabochons are interesting because of the lovely reddish metallic appearance of this mineral. Cut sto
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Colemanite is an abundant mineral, and transparent material isn’t rare. However, gem cutters rarely
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Any stone that changes color under different types of light is a rare treat for collectors. Color ch
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Color change sapphires are those that change color between light sources.
Coral is the external skeleton of a tiny, plant-like marine animal called the coral polyp. The struc
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The crystal structure of cordierite has many similarities to that of beryl; indialite, the dimorph,
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Next to diamond, corundum is the hardest mineral known and is very compact and dense, with no cleava
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Although covellite has attractive blue colors and shows iridescence, this rare mineral is difficult
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Probably fewer than a dozen creedite gems have ever been faceted. This rare mineral is rarer still a
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Lovely saffron-colored crocoite is quite a rare mineral. Although too soft and brittle for jewelry w
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Cut cryolite is somewhat translucent, and has a "sleepy" look. The cuttable material has a very low
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One of the rarest of all facetable gems, cut cuprites can show magnificent deep red color. However,
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A very durable gemstone, danburite is an excellent choice for jewelry use. Although the mineral isn'
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Datolite is a popular collector’s mineral. Polished sliced nodules can show off very attractive colo
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One of the rarest garnet varieties, demantoid can have a green color that rivals emerald and a fire
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Diamond is the most romanticized and heavily marketed of all gemstones. Nearly every jewelry establi
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Diaspore is hard enough to make a durable jewelry stone, but the typical light brownish color is not
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This mineral is seldom even mentioned in the gem literature because it is so rare and has been so se
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Violane has been used for beads and inlay—transparent material is always very tiny. The color of thi
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Dioptase has a beautiful, emerald-like green color. Although this mineral isn’t rare, gems are seldo
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Although transparent dolomite crystals are fairly abundant and popular collector’s items, faceted ge
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Dumortierite is a beautiful and very hard material, eminently suitable for jewelry. The cabochon mat
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A relative newcomer to the world of gemstones, ekanite is rare and usually quite radioactive. When c
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Emerald has been synonymous with the color green since ancient times. A fine emerald is a truly brea
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Most gem enstatites have indices in the range 1.663-1.673. The brown and green gems from Tanzania ar
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Faceted eosphorites in pale colors are quite attractive and easy to cut. However, these very rare ge
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The epidote mineral supergroup contains many related species of interest to collectors. However, epi
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Ettringite is not generally facetable; any cut stone would be considered an extreme rarity. South Af
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Although hard enough to be worn safely in jewelry, euclase in beautiful colors is rare over a few ca
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Although lapidaries can cut cabochons and decorative objects from massive or translucent eudialyte c
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Euxenite is seldom seen in collections. Most collectors would not regard the mineral as facetable, b
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Feldspars are the most common minerals at the Earth's surface. In fact, if the entire composition of
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This mineral is not abundant and is known from various localities. Cabochons are cut merely as curio
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Although too fragile for most jewelry use, fluorites are often faceted for collectors. They occur in
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Like their marine cousins, many freshwater mollusks can produce pearls. However, this rarely occurs
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Friedelite is not abundant, and gem-quality material is rarely seen even in large collections. Facet
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This is not a terribly attractive gemstone, but faceted gems would be a tremendous rarity. The mater
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Gahnospinel is a solid-state solution between spinel and gahnite.
Although commonly associated with the color red, garnets can be found in almost any color and are po
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This mineral is very hard to cut because of extreme softness and cleavage. Gaylussite dries out slow
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Glass has been used in jewelry for thousands of years. By itself, glass is brittle and unimpressive
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A rather rare mineral, lovely blue-green grandidierite is seldom seen in gem or jewelry collections.
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Grossular garnets come in almost every color, even colorless, except blue. However, unlike other gar
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Gypsum is one of the most abundant minerals, but gem-quality crystals are very rare. This material i
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Although hard enough for jewelry use, rare hambergite is a gem for collectors of the unusual. Its co
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One of the major mineral constituents of lapis lazuli, haüyne is rarely found and faceted as a disti
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Heliodor is a member of the beryl family. This stone is known for its range of yellow colors — from
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Hematite has a long history of use as a pigment. As a gemstone, this material is often carved but ve
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Massive hemimorphite can have a very delicate, blue color. However, it's seldom cut because not very
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Herderite is a rare collector's gem, especially in larger sizes. It's too soft for wear but attracti
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Also known as the “cinnamon stone,” hessonite is the yellow-orange to reddish orange variety of gros
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Hodgkinsonite is one of the rarest of all collector gems. Cut stones are bright and richly colored,
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This mineral was first noted in 1937 but was not described in detail until 1971. It has not yet been
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Howlite is always opaque in nodules; it is an abundant material and easy to acquire. Sometimes it co
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It should not be difficult to find numerous small faceted huebnerites among larger gemstone collecti
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Clinohumites and chondrodites can make beautiful gemstones with rich colors, but these members of th
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Hureaulite can show rich and lively pink, rose, and orange colors. However, this collector's gem is
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Hurlbutite is an extremely rare mineral. Minute, colorless faceted stones have been cut from fragmen
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Hydrogrossular differs from the other garnets in that it is never transparent. It ranges from transl
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Hyperitdiabas is one of the most outstanding minerals I have encountered in recent years. Its appear
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Idocrase is one of the lesser known and more beautiful collector gems. When properly cut it is as br
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Inderite is very soft and difficult to cut, and only a few stones have been cut by hobbyists. There
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This stone, which represents one of the few relatively available and affordable blue stone options,
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One of two distinct minerals commonly known as jade, jadeite is the rarer and harder variety. Rich e
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Jasper is an opaque, solid or patterned variety of cryptocrystalline quartz. All types of jasper tak
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Jeremejevite would make a durable and attractive jewelry stone, but this rare mineral occurs even mo
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Historically a popular black gem, jet has declined in popularity in modern times. Although jet jewel
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Star kornerupine also has been found (Mogok, Myanmar) but is very rare. Kornerupine is generally dar
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Kurnakovite is difficult to cut, inadvisable to wear, and usually colorless. Consequently, faceted s
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Kyanite is very rare as a faceted gem, especially if free from inclusions and flaws. The material is
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A beautiful but rare mineral, kämmererite is extraordinarily difficult to facet. As a result, the av
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An overview on Labradorite Jewelry and Gemstones. Covers details and essential information on the ph
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This material is nondescript and is cut solely as a curiosity. The gems are soft, pale colored, or c
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Lapis lazuli has been used since ancient times and remains popular today. This gemstone has been pri
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Laserblue is a rare, synthetic glass. It's hard for glass but easy to chip.
Lawsonite is extremely rare as a faceted stone, seldom reported and generally unavailable.
Lazulite makes a magnificent, deep blue gemstone. Although the mineral itself occurs widely, gem-qua
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Too soft for jewelry use, legrandite is a popular collector’s mineral because of its intense yellow
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Reddish granular or massive lepidolite is usually slabbed for ornamental purposes, such as ashtrays
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Although abundant in various lava rocks, leucite is extremely rare in gem-quality form and often has
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The blue color of linarite is magnificent, and it is a pity that large facetable rough has not been
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Ludlamite has a lovely green color but is too soft for wear. Large crystals are known from only a fe
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Transparent, gem-quality magnesite is rare and beautiful, with colors ranging from colorless, white,
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Malachite is a beautiful decorative stone. Its rich, patterned coloration in shades of green is uniq
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Malaia or malaya garnets are typically light to dark, slightly pinkish orange, reddish orange, or ye
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One of the rarer varieties in the garnet group, Mali garnet is a blend of grossular and andradite. T
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While the colors of spessartite garnet gemstones cover a wide range of orange shades, the mandarin g
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Manganotantalite makes a spectacular red brown gem that is a very rare collector’s item. Transparent
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Marcasite has a long history of use as a decorative and jewelry material. However, this brassy color
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Meliphanite is an extremely rare gemstone, and perhaps fewer than 5-10 faceted stones have ever been
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Mellite is a rare and unusual organic gemstone. Although soft and fragile, the “honey stone” is quit
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Microcline is a variety of feldspar. The only microcline you are likely to encounter is amazonite.
Ranging in color from pale yellow to brown, reddish, and green, microlite cabochons are prized by co
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Very rare milarite crystals can occur in green and yellow colors. Transparent material can yield sma
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Millerite has a rich, attractive yellow color. Massive millerites can sometimes be cut into cabochon
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Transparent mimetite crystals are extremely rare, and very few have ever been faceted. Cabochons wit
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Moldavite is a transparent to translucent olive to bottle green tektite, first found in 1787 at the
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Monazite may be partially metamict, with N=1.79. Stones can be an attractive yellow or brown color b
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Found all over the world, moonstone is prized for its blue to white adularescence — a billowy, moonl
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Compact, fibrous material is cabbed because the fibers provide a chatoyancy that sometimes yields we
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A member of the beryl family, morganite shows a range of pink colors due to traces of manganese. Rec
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The color of Namibian nambulite is a striking orange-red, very intense, and not really like any othe
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All three minerals are fibrous or elongated zeolite minerals. Faceted gems are almost always elongat
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Glass comes in several natural forms. All are used in jewelry.
A variety called elaeolite is red, green, brown, or gray, massive or in crystals filled with minute
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Nephrite is one of the two distinct minerals commonly known as jade. While nephrite doesn't match th
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An overview on Neptunite Jewelry and Gemstones. Covers details and essential information on the phys
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Niccolite’s delicate peachy red color and metallic luster looks beautiful when polished. Gem cutters
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Obsidian is the most common form of natural glass and occurs in many attractive varieties. Since pre
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Oligoclase gems are feldspars that are part of a solid state series between albite and anothrite.
For millennia, artisans have carved intricate cameos from black-and-white onyx. Solid black onyxes,
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Opals are in a class by themselves. As a species, opal is so unique it has its own descriptive vocab
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What a nice coincidence that Lapidary Journal's cover story for January, 1998 is on Oregon Sunstone!
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Orthoclase is best known for moonstone. It is occasionally a transparent, faceted gem.
Padparadscha is a light to medium toned pink-orange to orange-pink hue sapphire.
Until 2001, only three painite crystals were known to exist. Since then, additional discoveries have
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Although marketed as “angel skin opal,” “rock wood,” and “mountain leather,” palygorskite is neither
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Cerulean blue papagoite crystals are too small for faceting. However, massive material mixed with qu
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Discovered in 1989, paraíba tourmalines are among the world’s most prized gemstones. These rare gems
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The amphibole group is very large and extremely complex and contains numerous distinct species that
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An overview on Parisite Jewelry and Gemstones. Covers details and essential information on the physi
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Pearls are the only gems found within living creatures, both salt and freshwater mollusks. However,
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Fibrous pectolite has long been a curiosity for gem collectors. Compact material can make wonderful
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Pentlandite resembles other yellowish metallic minerals and is cut by collectors as a curiosity. The
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Periclase has been synthesized in large masses in the laboratory, but these have no market significa
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The modern August birthstone, peridot has been prized as a jewelry stone since ancient times. Always
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Peristerite is primarily oligoclase with a complex mixture of feldspars. It has iridescence that is
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Perthite is a blend of microcline, albite and oligoclase. It is usually brown and white. May have go
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Gem-quality, colorless, facetable petalite is rare and desirable to collectors. More so if the stone
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Rare phenakite is a very hard gem material suitable for jewelry. Usually colorless, cut stones have
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Rare phosgenite typically shows pale colors. This material is difficult to cut and too soft for jewe
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Renowned for its delicate blue-green shades, phosphophyllite’s beauty is enhanced by expert cutting.
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Colorless pollucites lack fire when cut and are usually small. However, this very rare cesium minera
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An overview on Powellite Jewelry and Gems. Covers details and essential information on the physical
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Prehnite is popular as a cabochon material among hobbyists because of its lovely green and blue-gree
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An overview on Prosopite Jewelry and Gemstones. Covers details and essential information on the phys
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A few almandine/pyrope garnets from the US will change with treatment into proteus garnets. In refle
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Proustite crystals have magnificent red colors and good brilliance. Although facetable, they're too
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The gem variety of pumpellyite, chlorastrolite, is best known from the Lake Superior district of the
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This material is never transparent and is too soft for wear. However, cabochons are a magnificent pu
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Deep red pyrargyrite occurs in a number of localities in well-formed but small crystals. However, fa
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Pyrite is more commonly known as fool’s gold and is familiar to nearly every mineral collector. It h
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Pyrope always occurs in series with other garnet species. Common, dark red garnets are a mixture of
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Pyrophyllite resembles talc in many ways and is indistinguishable by eye from soapstone. Chemical te
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Pyroxmangite grains are rare, seldom clean enough to facet, and difficult to cut. However, when cut,
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An overview on Pyrrhotite Jewelry and Gemstones. Covers details and essential information on the phy
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An overview on Quartz Jewelry and Gemstones. Covers details and essential information on the physica
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Quartzite is a rock made up of tightly packed quartz grains. Sometimes, it contains small crystals t
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Although this common arsenic sulfide mineral occurs worldwide, cut gem-quality realgar is extremely
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Originally known as bixbite, red beryl is one of the rarest, most desirable, and most expensive gems
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Rhodizite is tough enough to make an excellent jewelry stone. However, it's quite a rare mineral. Fa
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Beautiful rose red to pink rhodochrosite crystals are popular with mineral collectors. Although very
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Rhodolites are purplish red garnets, a blend between almandine and pyrope in composition. These dura
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Ranging in color from pink to a fine rose red, rhodonite is a popular material for jewelry and decor
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A popular variety of colored quartz, rose quartz makes a durable jewelry stone. Although commonly ca
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Rubellites are tourmalines with reasonably saturated dark pink to red colors and medium to dark tone
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One of the most popular traditional jewelry stones, ruby is exceptionally durable. Its colors — alwa
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Though perhaps best known as inclusions within other gems, rutile crystals themselves can be faceted
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Although pearls are one of humanity’s most ancient gems, natural undersea beds of pearl-producing oy
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Samarskite is a very heavy material from which lustrous black to brownish cabochons are sometimes cu
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Sanidine is a mineral of volcanic rocks, rarely considered a gem. While occasionally brown or yellow
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Few gems have held our attention over millennia as well as sapphire. The pure blue colors and excell
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Sapphirines are durable but very rare gemstones. Although named after their typically sapphire-blue
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Sarcolite is an extremely rare mineral. Tiny, colorless to “fleshy pink” gems have been cut only fro
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Although not well known, scapolite would make an attractive gem material for both jewelry enthusiast
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Large, faceted scheelites are among the most beautiful of all collector’s gemstones. They occur in m
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With lovely colors and intense pleochroism, faceted scorodite is a prize for collectors of the rare
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An overview on Sellaite Jewelry and Gemstones. Covers details and essential information on the physi
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Senarmontite is a rare mineral, restricted in occurrence to the presence of antimony sulfide ores. I
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To date, only one locality — Mont St. Hilaire, Quebec, Canada — has produced facetable serandite. Th
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Bowenite is usually blue-green, yellow-green, or dark green and translucent; it is used for carving,
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Shattuckite is often mixed with quartz, and data often reported for properties may be erroneous. The
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Shortite is an exceedingly rare, not overly attractive mineral. Cut gems are among the rarest of all
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Siderite is difficult to cut, but this light brown collector's gem has yielded faceted pieces of gre
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The fibrolite from Burma and Sri Lanka is well known to gem collectors, and highly prized because of
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Simpsonite is an extremely rare gemstone. The material from Western Australia is bright yellow-orang
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Long thought to be brown peridot, sinhalite was investigated in 1952 and found to be a new mineral.
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Smaltite is a collectors oddity, cut only as cabochons. It is seldom seen in collections since it is
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Smithsonite occurs across the globe, but facetable crystals are extremely rare. These gems can show
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Smoky quartz comes in every shade of brown, from a light tan to nearly black. This gem is known for
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Tough, easy to cut or carve, and rich in color, typically blue, sodalite is highly desired by hobbyi
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Sogdianite is an extremely rare mineral, suitable for cabochons. The color is striking and the mater
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Usually orange to reddish brown, gem-quality spessartite or spessartine garnets are somewhat rare. H
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Sphalerite occurs in many colors. With a dispersion over three times that of diamond and an adamanti
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Sphene, also known as titanite, has rich body colors, strong trichroism, and a fire that exceeds dia
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Spinel is an important gem historically because it has been confused with other gemstones, especiall
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Extraordinarily difficult to cut, spodumene has several colorful varieties, such as hiddenite and ku
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An attractive but uncommon mineral, spurrite has seldom been cut as a gemstone. However, it has the
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Star sapphire is a type of sapphire that displays asterism, a star-like optical effect.
Staurolite crystals in opaque cross shapes are popular gemstones. However, this material is very rar
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Rare stibiotantalite possesses an interesting mix of physical and optical properties that help disti
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Stichtite is not facetable, but the pink color is quite striking in cabochons. Cut stones are especi
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Stolzite is a rare mineral; much rarer than wulfenite and usually occurs in very minute crystals. Ho
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Strontianite is a collector’s oddity, with no spectacular properties to recommend it. Colors are usu
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What is the color of sugilite? Grape jelly purple is a good description. More popular among consumer
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Although sulfur is very abundant, facetable material is not. Sulfur is also enormously difficult to
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Sunstones contain hematite or goethite inclusions, which reflect light in parallel orientation and c
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Taaffeite reacts to most gemological tests like mauve-colored spinel, but can be distinguished on th
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An overview on Talc Jewelry and Gemstones. Covers details and essential information on the physical
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Tantalite is too dark to be of use as a faceted gem but is sometimes cut as a collector curiosity, e
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Tanzanite has had a rapid rise to prominence among jewelers and gem enthusiasts. Although naturally
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Tektites were first discovered in 1787 in Czechoslovakia (then Moravia) near the River Moldau, hence
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Tephroite is generally reddish brown and barely translucent. However, it takes a good polish and is
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For a long time, rare thaumasite crystals — pale, fragile, and with little to no fire — were interes
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Thomsonite cabochons take a high polish but are somewhat brittle. These are especially lovely when a
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Crocidolite, (blue asbestos,) alters to quartz, but while retaining its fibrous structure. This mate
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The traditional November birthstone, topaz is a popular gem. Although frequently associated with gol
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Tourmaline is a name applied to a family of related minerals with widely varying properties. Tourmal
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It is possible to misidentify tremolite, mistaking it for other amphiboles. Hexagonite is the rarest
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Triphylite is one of the world's rarest gems. The IGS had the extraordinary privilege of examining a
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An emerald-green variety of grossular garnet, tsavorite is one of the most popular and expensive var
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Gem collectors prize tugtupite for its rich colors and intense reaction to ultraviolet light. Sporad
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With striking sky blue to blue-green colors, turquoise has been prized by cultures all over the worl
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The fibrous material cuts interesting catseye cabochon gems, but they are curios only since they are
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Always a dark, rich green color, uvarovite is one of the rarest members of the garnet family. Usuall
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A faceted vanadinite may be considered a tremendous rarity. Fewer than ten such gems may have been c
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With beautiful green to blue-green colors and interesting patterns, variscite is a popular hobbyist
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Villiaumite is seldom discussed among collectors of rare gemstones because until recently no facetab
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Vivianite is so fragile and soft, any faceted gems would be difficult to handle safely, let alone we
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Väyrynenite is a very rare mineral. Crystals as well as faceted gemstones in reddish, pinkish, and o
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Wardite is another of the many phosphates that have been cut by collectors. It is pale colored and n
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Wavellite is a very attractive mineral, well-known to collectors. Its radial aggregate crystal clust
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An overview on Weloganite Jewelry and Gemstones. Covers details and essential information on the phy
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Seldom seen even in mineral collections, whewellite is very rarely faceted. It’s mostly desired as a
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An overview on Wilkeite Jewelry and Gemstones. Covers details and essential information on the physi
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Willemite is prized for its intense green fluorescence. Too fragile for jewelry use, faceted specime
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Easy to cut but too soft and fragile for jewelry, a faceted witherite would make an unusual addition
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Interesting cabochons have been cut from wollastonite, especially from the fibrous material (which y
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Although aesthetically magnificent wulfenite crystals are often too thin, soft, and sensitive to cut
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Xonotlite is strong and can take a good polish. However, these gems are extremely rare, both as a sp
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Yugawaralite is a very rare colorless to pinkish zeolite mineral. Little facetable material exists,
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Small, cuttable crystals of very rare zektzerite are found only in a mountainous location in Washing
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Zincite is a very rare mineral, essentially restricted to one important locality. Well, terminated c
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Don’t be confused by the name. Zircon is a natural, magnificent, and underrated gemstone that has be
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An overview on Zunyite Jewelry and Gemstones. Covers details and essential information on the physic
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