ColorWright Home    Beads    Books & Videos    Fossils    Cabbing & Carving Rough    Cabochons    Faceting Accessories    Faceting Rough    Jewelry & Pendants    Lapidary Machines    Meteorites    Rock Saws    Slabs    Spheres & Polished Stones    Tumblers    Turquoise Rough    Gift Ideas     ORDER    Faceting Rough Catalog Index    Whats New Email Lists    Return Policy    Contact Us    mm to inches cm to inches inches to mm inches to cm carats to grams grams to carats grams to ounces ounces to grams grams to pounds pounds to grams 1/32 inch to mm 1/16 inch to mm 3/32 inch to mm 1/8 inch to mm 5/32 inch to mm 3/16 inch to mm 7/32 inch to mm 1/4 inch to mm 9/32 inch to mm 5/16 inch to mm 3/8 inch to mm 7/16 inch to mm 1/2 inch to mm 5/8 inch to mm 3/4 inch to mm 7/8 inch to mm  Properties of Gemstones and Gem Materials Achroite (tourmaline) Actinolite Alexandrite (chrysoberyl) Almandine (garnet) Amber Amethyst (quartz) Ametrine (quartz) Andradite (garnet) Andalusite Apache Tear (obsidian) Apatite Aquamarine (beryl) Axinite Barite Benitoite Beryl Bixbite (beryl) Bytownite (feldspar) Calcite Cassiterite Cerussite Chrysoberyl Citrine (quartz) Clinozoisite (epidote) Cordierite (iolite) Corundum Cubic Zirconia (CZ) Danburite Demantoid (garnet) Diamond Diopside Dravite (tourmaline) Ekanite Elbaite (tourmaline) Emerald (beryl) Epidote Euclase Feldspar Fluorite Gadolinium gallium garnet (GGG) Garnet Goshenite (beryl) Gypsum (selenite) Hauynite Heliodor (beryl) Hiddenite (spodumene) Indicolite (tourmaline) Idocrase Iolite Kornerupine Kunzite (spodumene) Kyanite Labradorite (feldspar) Moldavite Morganite (beryl) Obsidian Opal Orthoclase (feldspar) Padparadschah (corundum) Peridot Petalite Piemontite (epidote) Phenacite (phenakite) Prasiolite (quartz) Quartz Rhodochrosite Rhodolite (garnet) Rubellite (tourmaline) Ruby (corundum) Sapphire (corundum) Scapolite Scheelite Selenite Sinhalite Sphalerite Sphene Spinel Spodumene Schorl (tourmaline) Spessartite (garnet) Sunstone (feldspar) Tanzanite Topaz Topazolite (garnet) Tourmaline Tektite (moldavite) Tsavorite (garnet) Verdelite (tourmaline) Vesuvianite (idocrase) Wulfenite YAG (Yttrium aluminum garnet) Zincite Zircon Zoisite (tanzanite) Information from: Detection of Gemstone Enhancement by GIA Faceting for Amateurs by Vargas Gemstones of the World by Schumann Handbook of Gem Identification by Robert Liddicoat, Jr. Personal conversations with other faceters Personal experience  ORDER    Faceting Rough Catalog Index    Whats New Email Lists    Return Policy    Contact Us    Copyright by ColorWright - All Rights Reserved. Our Privacy Policy. Toll Free Order Line FOR ORDERS ONLY (877) 548-1439 or Email Us