BLT193 Black Tourmaline Intarsia Beads Aquamarine is the birthstone for

Aquamarine is the birthstone for March

5 to 7 on the Mohs Scale

Ruby in Zoisite was discovered in northeast Tanzania in 1949

Material that is visibly quartz or overly fractured has been graded out

BLT193 Black Tourmaline Intarsia Beads Aquamarine is the birthstone forBlack 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