Large black tourmaline with hyalite Aragonite It especially highlights structure of

It especially highlights structure of the hydroxyapophyllite crystals of this piece

Approx weight: 8–12g

The alternating zones of green and purple muddle to give the material its inky grape-soda appearance

The matte light brown mineral coating is lizardite

Large black tourmaline with hyalite Aragonite It especially highlights structure ofLocale: Erongo Mountain, Namibia Approx dimensions: 3. 25 x 2. 5 x 2. 25" Approx weight: 645g This large glossy black tourmaline, known as schorl, has the Mercedes termination characteristic of the Erongo region with intricate growth patterns across the faces of the tip. The sides are beautifully striated, with fine vertical lines and a chunkier accordion zig zag to the sides of the crystal. Erongo schorl typically has very high luster as seen in this