BLT193 Black Tourmaline Intarsia Beads Ruby in Zoisite was discovered

Ruby in Zoisite was discovered in northeast Tanzania in 1949

and is fairly irregularly shaped

Additionally the rock can contain tube formations

5 on the Mohs hardness scale

BLT193 Black Tourmaline Intarsia Beads Ruby in Zoisite was discoveredBlack Tourmaline crystal with termination. 3. 5" x 3" x 2. 5" 1. 55 lb Black Tourmaline is also called Schorl, and accounts for ninety five percent of all Tourmaline in nature. It is black, or sometimes a deep blue that appears black. The term Schorl was in use before the 1400s, named for a town in Saxony, Germany, where Black Tourmaline was found in nearby tin mines. Black Tourmaline belongs to a complex family of aluminum borosilicate mixed with