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Glittering
Stones >> Semi
Precious Stones >> Tanzanite
Semi Precious Stone Tanzanite
The name tanzanite was a trade name coined by
Tiffany & Co. shortly after the gem's were
discovered, an obvious allusion to its country of origin. This
was thought necessary in order to make the stone remarkable
to the public: the name has since stuck as a varietals designation.
Tanzanite's present-day popularity as a gemstone is
very largely thanks to Tiffany's marketing campaigns. The mining
of tanzanite nets the Tanzanian government approximately USD $15
million annually, the finished gems later being
sold mostly on the US market for its sales totaling approximately
USD $400 million annually.
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Historical Facts of Tanzanite
| Refractive index |
1.69 - 1.70 |
| Chemical Composition |
Ca2(Al,OH)Al2(SIO4) |
| Mohs Scale Hardness |
6.5 |
| Crystal system |
Orthorhombic |
| Density |
3.10 - 3.38 |
| Color |
Purple - Blue |
| Ocurrence |
Tanzania |
| Luster |
Vitreous, pearly on cleavage surfaces |
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Gem Jewelry Tanzanite
| Tanzanite Bracelet |
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| Tanzanite Earrings |
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| Tanzanite Necklace |
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| Tanzanite Rings |
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