BLT193 Black Tourmaline Intarsia Beads This polished specimen was item

This polished specimen was item #55 on the Willow Creek Jasper Live @ 5 from November 2020

5 on the Mohs hardness scale

darker than green aventurine from India

Additionally the rock can contain tube formations

it makes superb cabochons and takes an exceptional polish

BLT193 Black Tourmaline Intarsia Beads This polished specimen was itemBlack 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