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- Tanzanite abstract "Tanzanite is the blue/violet variety of the mineral zoisite (a calcium aluminium hydroxyl Sorosilicate) belonging to the epidote group. It was discovered in the Mererani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro. Tanzanite is used as a gemstone. Naturally formed tanzanite is extremely rare and is endemic only to the Mererani Hills.Tanzanite is noted for its remarkably strong trichroism, appearing alternately sapphire blue, violet and burgundy depending on crystal orientation. Tanzanite can also appear differently when viewed under alternate lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. Tanzanite is usually a reddish brown in its rough state, requiring artificial heat treatment to bring out the blue violet of the stone.The mineral was named by Tiffany & Co. after Tanzania, the country in which it was discovered. In 2002, the American Gem Trade Association chose Tanzanite as a December birthstone, the first change to their birthstone list since 1912.".
- Tanzanite thumbnail Zoïsite_(Tanzanite).jpg?width=300.
- Tanzanite wikiPageExternalLink tanzanite.html.
- Tanzanite wikiPageExternalLink ?id=4119.
- Tanzanite wikiPageExternalLink munich09_tanz.jpg.
- Tanzanite wikiPageExternalLink 4-tanzanite-july-7-1967-tanzanite-something-new-out-of-africa-but-no-one-knew-what-it-was.
- Tanzanite wikiPageExternalLink 0,9171,1594137-1,00.html.
- Tanzanite wikiPageExternalLink 0,9171,900582,00.html.
- Tanzanite wikiPageID "308210".
- Tanzanite wikiPageLength "15991".
- Tanzanite wikiPageOutDegree "48".
- Tanzanite wikiPageRevisionID "683177317".
- Tanzanite wikiPageWikiLink Arusha.
- Tanzanite wikiPageWikiLink Arusha_Region.
- Tanzanite wikiPageWikiLink Beryl.
- Tanzanite wikiPageWikiLink Birthstone.
- Tanzanite wikiPageWikiLink Birthstones.
- Tanzanite wikiPageWikiLink British_Museum.
- Tanzanite wikiPageWikiLink Carat_(mass).
- Tanzanite wikiPageWikiLink Category:Epidote_group.
- Tanzanite wikiPageWikiLink Category:Gemstones.
- Tanzanite wikiPageWikiLink Cobalt.
- Tanzanite wikiPageWikiLink Crystal.
- Tanzanite wikiPageWikiLink Dichroism.
- Tanzanite wikiPageWikiLink Dodoma.
- Tanzanite wikiPageWikiLink Epidote.
- Tanzanite wikiPageWikiLink Fluorescent_lamp.
- Tanzanite wikiPageWikiLink Fluorescent_light.
- Tanzanite wikiPageWikiLink Gemological_Institute_of_America.
- Tanzanite wikiPageWikiLink Gemstone.
- Tanzanite wikiPageWikiLink Harvard_University.
- Tanzanite wikiPageWikiLink Heidelberg_University.
- Tanzanite wikiPageWikiLink Incandescent_light.
- Tanzanite wikiPageWikiLink Incandescent_light_bulb.
- Tanzanite wikiPageWikiLink India.
- Tanzanite wikiPageWikiLink Jaipur.
- Tanzanite wikiPageWikiLink M.I.T..
- Tanzanite wikiPageWikiLink Manyara_Region.
- Tanzanite wikiPageWikiLink Massachusetts_Institute_of_Technology.
- Tanzanite wikiPageWikiLink Mineral.
- Tanzanite wikiPageWikiLink Mount_Kenya.
- Tanzanite wikiPageWikiLink Mount_Kilimanjaro.
- Tanzanite wikiPageWikiLink Nairobi.
- Tanzanite wikiPageWikiLink Olivine.
- Tanzanite wikiPageWikiLink Orthorhombic.
- Tanzanite wikiPageWikiLink Orthorhombic_crystal_system.
- Tanzanite wikiPageWikiLink Peridot.
- Tanzanite wikiPageWikiLink Pleochroism.
- Tanzanite wikiPageWikiLink Saks_Fifth_Avenue.
- Tanzanite wikiPageWikiLink Silicate_minerals.
- Tanzanite wikiPageWikiLink Sorosilicate.
- Tanzanite wikiPageWikiLink Suicide.
- Tanzanite wikiPageWikiLink Tanzania.
- Tanzanite wikiPageWikiLink Tanzanite_One.
- Tanzanite wikiPageWikiLink Tiffany_&_Co..
- Tanzanite wikiPageWikiLink Trichroism.
- Tanzanite wikiPageWikiLink X-ray_fluorescence.
- Tanzanite wikiPageWikiLink Zoisite.
- Tanzanite wikiPageWikiLink File:Craft_work_on_tanzanite.jpg.
- Tanzanite wikiPageWikiLink File:Tansanit_nature.jpg.
- Tanzanite wikiPageWikiLink File:TrichroicTanzaniteOnMatrix.JPG.
- Tanzanite wikiPageWikiLink File:Trichroic_Tanzanite_Crystal_-_violet_&_burgundy.jpg.
- Tanzanite wikiPageWikiLink File:Trichroic_Tanzanite_Gem_-_blue,_violet_&_purple.jpg.
- Tanzanite wikiPageWikiLinkText "Tanzanite".
- Tanzanite wikiPageWikiLinkText "tanzanite".
- Tanzanite birefringence "0.006".
- Tanzanite caption "Tanzanite rough stone and cut stone".
- Tanzanite category Silicate_minerals.
- Tanzanite category Sorosilicate.
- Tanzanite cleavage "Perfect {010}, imperfect {100}".
- Tanzanite color "Violet, blue".
- Tanzanite formula "+".
- Tanzanite fracture "Uneven to conchoidal".
- Tanzanite gravity "3.1".
- Tanzanite habit "Prismatic crystals with striations; massive to columnar".
- Tanzanite hasPhotoCollection Tanzanite.
- Tanzanite luster "Vitreous, pearly on cleavage surfaces".
- Tanzanite mohs "6.5".
- Tanzanite name "Tanzanite".
- Tanzanite opticalprop "biaxial positive".
- Tanzanite pleochroism "Present, dichroism or trichroism depending on heat treatment.".
- Tanzanite refractive "1.69".
- Tanzanite streak "White or colorless".
- Tanzanite strunz "9".
- Tanzanite system Orthorhombic.
- Tanzanite system Orthorhombic_crystal_system.
- Tanzanite twinning "penetration twins".
- Tanzanite wikiPageUsesTemplate Template:Citation_needed.
- Tanzanite wikiPageUsesTemplate Template:Commons_category.
- Tanzanite wikiPageUsesTemplate Template:Distinguish.
- Tanzanite wikiPageUsesTemplate Template:Infobox_mineral.
- Tanzanite wikiPageUsesTemplate Template:Jewellery.
- Tanzanite wikiPageUsesTemplate Template:Reflist.
- Tanzanite subject Category:Epidote_group.
- Tanzanite subject Category:Gemstones.
- Tanzanite hypernym Variety.
- Tanzanite type Article.
- Tanzanite type ChemicalSubstance.
- Tanzanite type Grape.
- Tanzanite type Group.