Tanzanite |
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As the name suggests, this transparent blue zoisite comes from Tanzania. This is a calcium and aluminum silicate. A recent discovery (1967), this stone has been awarded gem status. It comes in violet-blue, light violet, green, yellow, light brown, pink or almost colourless. Warning; the sapphire blue variety is the product of a heating process; it is acid-proof, but a little brittle and its edges can wear down. |
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