Ametrine 8mm Round A Grade - 15-16 Inch 4x20-6x40mm It is a variety of

It is a variety of the mineral corundum

It is the most abundant lithium-bearing mineral as well as a significant source of the rare alkali metals rubidium and caesium

The inclusions can be so dense as to make the clear Quartz nearly opaque

Although most people think of diamonds as colorless

The first rough material was offered for sale in Tucson in 2011 and is now regularly mined at the remote deposit site in Sonora

Ametrine 8mm Round A Grade - 15-16 Inch 4x20-6x40mm It is a variety ofAmetrine is quartz that occurs in bands of purple and yellow. As the name suggests, it is a combination of Amethyst and Citrine. The different colored zones in the stone result from different oxidation states of iron, due to exposure to different temperatures during its formation. It is believed that Ametrine was first introduced to Europe by a conquistadors gift from Bolivia to the Spanish Queen.