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Blue Market

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Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Blue Market
Address:
Muindi Mbingu Street, Nairobi, Kenya

Tanzanite is the blue and violet variety of the mineral zoisite belonging to the epidote group. The gemstone was discovered by Manuel de Souza in the Mererani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro. Tanzanite is only found in Tanzania, in a very small mining area near the Mirerani Hills.Tanzanite is noted for its remarkably strong trichroism, appearing alternately 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. In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish veil and bring out the blue violet of the stone.The gemstone was given the name 'tanzanite' by Tiffany & Co. after Tanzania, the country in which it was discovered. The scientific name of blue-violet zoisite was not thought to be consumer friendly enough by Tiffany's marketing department, who introduced it to the market in 1968. In 2002, the American Gem Trade Association chose tanzanite as a December birthstone, the first change to their birthstone list since 1912.
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