Cat's Eye A-Grade, Banded 6mm Round - 15-16 Inch Stone Type_Glaciertite This prompted an alternative name

This prompted an alternative name for the gemstone: Princess Blue

It was first found in a deposit near Shunga village

which occurs in many colors

and much of the black Onyx on the market has been artificially colored

The antibacterial properties of shungite have been confirmed by modern testing

Cat's Eye A-Grade, Banded 6mm Round - 15-16 Inch Stone Type_Glaciertite This prompted an alternative nameCats Eye is a quartz stone that appears in a range of colors including white, gray, green, yellow and brown. The fibrous asbestos inclusions in the stone give it the flash that inspired its name. It is a form of Chrysoberyl, the third to hardest common natural gemstone, with a Mohs Hardness of 8. 5, between Topaz (8) and Corundum (9).