Black Tourmaline with Hematite and Feldspar Tower #06 Pietersite resulting in the magnificent banded

resulting in the magnificent banded color layers

645lbs / 26

like diamond

Large deposits of brightly colored Calcites occur in Mexico

Black Tourmaline with Hematite and Feldspar Tower #06 Pietersite resulting in the magnificent banded447g 0. 985bs 15. 77oz 3. 97" x 2. 63" x 1. 85" Tourmaline is a complex aluminum borosilicate with a hardness of 7 to 7. 5. Its crystal pattern is hexagonal (trigonal) with prismatic crystals and striations running parallel to the main axis. No other gemstone has such wide variations in colors. Tourmalines can be red, pink, yellow, brown, black, and various shades of green, blue lilac and violet. Often the colors vary, sometimes widely, within a