Large black tourmaline with hyaliteLocale: 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