BLT193 Black Tourmaline Intarsia Beads Additionally the rock can contain

Additionally the rock can contain tube formations

4 cm x 5 cm x 3

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

and is fairly irregularly shaped

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

BLT193 Black Tourmaline Intarsia Beads Additionally the rock can containBlack 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