Ametrine
is a variety of quartz that contains both amethyst and
citrine sectors in the same crystal.
Ametrine
is only found in one mine in the world. The Anahi Mine
in Bolivia is the major world producer of ametrine. The
mine first became famous in the seventeenth century. A
Spanish conquistador received it as a dowry when he married
a princess from the Ayoreos tribe named Anahi. Ametrine
was introduced to Europe through the conquistador's gifts
to the Spanish queen.
Synthetic
ametrine is now produced in vast quantity.