Guest guest Posted May 31, 2006 Report Share Posted May 31, 2006 Hi, From what I've been told by gemologists, most tanzanites (extreemly expensive gemstones) are artificially heated to be bright blue - but some become this colour naturally as a result of volcanic activity. The original colour of tanzanite is yellow or brown. Warmly, Alisa English Website: http://www.bareket57.biz/ Everyone is raving about the all-new Mail Beta. Quote Link to comment Share on other sites More sharing options...
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