:. ENORME ET FABULEUSE AMETRINE 100% NATURELLE FORME RONDE DE BOLIVIE 48,57 CARATS #092# :. ENORME Y FABULOSA AMETRINA REDONDA BOLIVIANA 100% natural 48,57 CTS #092# Origin BOLIVIA The crystalline quartz in bicolor, purple of amethyst and the sunny gold of citrine is known as ametrine. These bicolor yellow and purple made the crystal quartz become to the most valuable gemstone. The Anahi Mine in Bolivia is the major world producer of ametrine. The mine first became famous in the seventeenth century when 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.