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The majority of the specimens from this find were merely single crystals off matrix
the piece was a gift from Erberto Tealdi (former editor of Rivista Mineralogica Italiana)
It is a good sized stone
Tourmalines are certainly among the most popular species for collectors
Ametrine (natural bi-color Quartz) antimony The majority of the specimensAmetrine is the naturally occurring bi colored variety of Quartz that is only found at the Anahi Mine in Bolivia. Some material is marked as coming from Brazil, but in reality, the rough is sometimes shipped from Bolivia across the border (which is only about 40 km away) to be processed in Brazil. There is no reported discovery of Ametrine anywhere in Brazil, and the Bolivian Ametrine remains the best and frankly ONLY commercially available material
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