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Search Location   All Locations California Colombo Ohio Category   All Categories Alexandrite Alexandrite Catseye Amethyst Ametrine Andalucite Apatite Apatite Cat's Eye Aquamarine Aquamarine Cat's Eye Bargain Lots Beryl Chrysoberyl Chrysoberyl Catseye Chrysoberyl Stars Citrine Cobalt Spinel Crystals Diopside Diopside Cat's Eye Diopside Stars Enstatite Feldspar Fluorite Garnet Garnet Color Change Garnet Grossular Garnet Hessonite Garnet Rhodolite Garnet Spessartine Garnet Star Garnet Tsavorite Investment Gems Iolite Konerupine Kunzite Kyanite Lime Citrine Moonstone Mystic Topaz Opal Padparasha Pairs Peridot Quartz Quartz Catseye Quartz Stars Rare Gems & Minerals Ruby Ruby Star Rutile Sapphire Blue Sapphire Cats Eye Sapphire Green Sapphire Lavender Sapphire Other Sapphire Pink Sapphire Purple Sapphire White Sapphire Yellow Scapolite Scheelite Silimanite Silimanite Catseye Sinhalite Special Cut Gems Sphene Spinel Spinel Star StarSapphire Taaffeite Topaz Topaz Catseye Tourmaline Tourmaline Bi-Color Tourmaline Chrome Tourmaline Col/Chg Zircon       Alexandrite Enstatite Opal Scapolite Alexandrite Catseye Feldspar Padparasha Silimanite Catseye Amethyst Fluorite Peridot Sinhalite Ametrine Garnet Quartz Sphene Andalucite Garnet Color Change Quartz Catseye Spinel Apatite Garnet Grossular Quartz Stars Spinel Star Apatite Cat's Eye Garnet Hessonite Ruby Star Sapphire Aquamarine Garnet Rhodolite Ruby Star Taaffeite Aquamarine Cat's Eye Garnet Spessartine Rutile Topaz Beryl Garnet Star Sapphire Blue Topaz Catseye Chrysoberyl Garnet Tsavorite Sapphire Cats Eye Tourmaline Chrysoberyl Catseye Iolite Sapphire Green Tourmaline Bi-Color Chrysoberyl Stars Konerupine Sapphire Lavender Tourmaline Col/Chg Citrine Kunzite Sapphire Other Zircon Cobalt Spinel Kyanite Sapphire Pink     Diopside Lime Citrine Sapphire Purple     Diopside Cat's Eye Moonstone Sapphire White     Diopside Stars Mystic Topaz Sapphire Yellow       The name citrine refers to any quartz crystal or cluster that is yellow or orange in color. Gemological Information Color : Yellow, Orange Refractive Index: 1.544-1.553 Chemical Composition: SiO2 Hardness: 7 Crystal Group: Trigonal Ocurrence: Brazil, Uruguay, Mexico, Russia, USA. Although, often cut as a gemstone, citrine is actually somewhat rare in nature. Most citrines on the market have been heat treated. Specimens of low grade inexpensive amethyst or smoky quartz are often cooked at high temperatures to produce the more profitable orange yellow citrine. Citrines with colors produced by artificial means tend to have much more of an orange or reddish caste than those found in nature which are usually a pale yellow. Much of the natural citrine may have started out as amethyst but heat from nearby magmatic bodies may have caused the change to citrine. Interestingly, a popular gemstone on the market is a mixture of half amethyst and half citrine and is given the name ametrine. Unfortunately, citrine is often confused with the more expensive orange-yellow topaz and is at times sold as topaz by unscrupulous dealers. This practice has soured many potential citrine fanciers who see citrine as a fake topaz and not as a legitimate gemstone.   453/1 HAVELOCK ROAD, COLOMBO 06, SRI LANKA. TEL - +94 11 4527760, 5052185, 5050232 FAX - 2588912 Email : crescent@cresla.com