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Tanzanite’s Pleochroic Colors
by Jourdan Block
Tanzanite, one of December's birthstones, is a rare blue-to-violet or purple zoisite found only at the foot of Mount Kilimanjaro in Tanzania. Its c...
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Parti-Colored Sapphires From Tanzania
by Jourdan Block
Since late 2007, rubies and sapphires have been mined by hand methods from both eluvial and primary deposits at Winza in central Tanzania. The gem ...
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December | Turquoise, Tanzanite & Zircon
by Jourdan Block
Turquoise, tanzanite and zircon are the three birthstones for December. These December birthstones are mined around the world and all have their ...
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