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Fine Jewelry University

1. 

   Gem in the Spotlight: Tanzanite

   FJU Category: Gemstones | Tags: Gem Spotlight, Gemology, Tanzanite, Zoisite

   …and won’t be harmed under normal conditions the low hardness and poor to fair toughness (and a property called cleavage, which is a tendency to break when struck) means that care should be taken to avoid sharp impacts. Setting it in earrings or a pendant will help protect it if the intended use is daily wear. Rings and bracelets set with tanzanite should only be worn carefully on occasion. We recommend cleaning with warm soapy water and a soft bristle brush. You should …