Ametrine

Ametrine is a gemstone mix of Amethyst & Citrine. A beautiful gem in it's own right, this species is found only in Anahi Mine, Eastern Bolivia,with minor ammounts  in India w/ citrine in amethyst. Some occurs in Brazil as Amethyst/ Citrine bicolored Quartz.
    In orientating an Ametrine, the Facetor will try to get a good separation of the colors.
Good article:  WWW.geology. com/news/2013/ametrine www.geology. com/news/2013/ametrine/shtml