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Tanzanite — specimen 0235, photo © NMNHS
Tanzania, Manyara, Lelatema Mountains, Merelani Hills, 3.58333°S 37.00833°E
7.11 | 6.55 | 3.62 mm;
medium light blue; strong;
Very clean specimen; lightly coloured; mixed style cut with large window; good polish.
More information from ‘Classification’
A variety of zoisite with a blue to blue-violet colour. Nearly all tanzanites on the market have been heat-treated to produce this colour. First reported from the Merelani, Lelatema Mts, Manyara, Tanzania.
Gemmology — gemstones
National Museum of Natural History, Sofia
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.