Ametrine is a variety of bicolor quartz that has zones of amethyst (purple) and citrine (golden yellow) in contact with one another in a single crystal. According to legend, the Ayoreo Indian tribe of eastern Bolivia knew about the bicolor quartz crystals over 500 years ago.
Mohs Hardness - 7
Synthetic Ametrine:-
Color boundary may be bended and/or parallel to optic axis - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 7
Significant Gem Localities:-
Mined in Bolivia(Santa Cruz Department->Sandoval Province->La Gaiba District), Brazil and India
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