GIA, September 29, 2014
Once upon a time, gem cutting was a strict craft bound by centuries of tradition. Then Bernd Munsteiner (b. 1943) invented the fantasy cut.
Read MoreVladimir S. Balitsky, Taijin Lu, June 1, 1999
Gem-quality synthetic ametrine has been produced commercially in Russia since 1994.
Read MorePaulo M. Vasconcelos, Hans-Rudolf Wenk, March 1, 1994
The Anahí mine, Bolivia, has produced large amounts of amethyst, citrine and amethyst-citrine for the gem market.
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The world’s only commercial source of ametrine is the Anahi mine in southeastern Bolivia. Legend has it that a Spanish conquistador discovered the mine’s location in the 1600s and introduced the gem to Europeans when he presented several specimens to his queen.
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