Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of quartz. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Our Ametrine originates from the Anahi Mine in Bolivia.
This is a unique variety of Quartz from the one of the most impressive deposits in the world. Ametrine is the national gem of Bolivia, so much so that the locals refer to it as "Bolivinita". Ametrine is a naturally occurring purple and yellow bi-color variety that is formed by a unique twin law ("Brazil Law Twinning") where two separate individually colored crystals are intergrown to form an alternating "radiation" pattern of purple and yellow triangles when viewed down the c axis. The two colors are oriented based upon their position inside the crystal to create the famous bicolor gemstones. The Anahí Mine is the world’s only commercial source not only of gemmy Ametrine but also of naturally occurring (unheated) Citrine.
Most ametrine in the low price segment can surely be assumed to stem from synthetic material. Since 1994 a Russian laboratory has perfected the industrial production of bicolored quartz crystals that are later irradiated to bring out the typical ametrine colors. Green-yellow or golden-blue ametrine does not exist naturally.
Bicolour ametrine is cut from larger ametrine crystals. Our ametrine originates from the Anahi Mine in Bolivia. See this Blog post to learn more about the Anahi mine.
GemWerx does not sell synthetic or treated ametrine.