Ametrine all natural quartz that is a combination both Citrine and Amethyst creating a truly stunning mix of colors within these exquisit stones. Coming from only one mine in the world located in Bolivia this stunnin stone is a rare beauty. This piece features some of the brightest and best shades of purple and golden yellow ametrine has to offer, weighing 138.23cts., measuring 36X25X19mm and being internally clean your creation will be truely mezmerizing when finished.