Ametrine is a transparent, bicolored Quartz with the Contrasting Colors of both Amethyst & Citrine in the same gem giving it an intriguing appearance.

Ametrine is a bicolor gem that’s highly prized when it displays an attractive balance between its most desirable amethyst and citrine shades.

Ametrine is a form of quartz in which the colors of the amethyst and citrine quartz varieties are present in the same crystal. Photo by Robert Weldon/GIA, courtesy Minerales y Metales del …

Explore ametrine history, research, quality factors, and more in the GIA Gem Encyclopedia.

Apr 30, 2013 · We bring you to the source of one of the world’s most unique gems: ametrine. In this gem, nature has combined two quartz varieties, purple amethyst and golden citrine. …

The world’s only commercial source of ametrine is the Anahi mine in southeastern Bolivia. Legend has it that a Spanish conquistador discovered the mine’s location in the 1600s and introduced …

When it comes to highly prized ametrine, size matters. That’s because the best, most intense citrine and amethyst colors are found in larger sizes, usually over 5 carats. This 87.66-ct. …

Ametrine can be safely cleaned with warm, soapy water. Ultrasonic cleaners are usually safe except in the rare instances where a stone is dyed or treated by fracture filling. Steam cleaning …

ametrine is sold in Russia. Recently, however, synthetic ametrine (of unknown origin) has appeared in the Bolivian market (Rivero, 1999). Although at least three morphological types of …

Of all the varieties of quartz, ametrine is perhaps the most fascinating to observe. While its stunning color zon-ing makes it a popular designer gemstone, it also encom-passes several …