Types Of Quartz And The Enhancements Or Treatments Used ...
Ametrine, Anahi mine, Bolivia Material with good saturation of both colors, that's cut with a 50/50 split between the two, has the greatest commercial value; but ametrine is considered to be a singlesource stone, so every bit of material extracted from the Anahi mine in Bolivia that can be cut is used, regardless of the ratio between the ...