Black tourmaline with excellent form and small hyalite Microcline This lumpy piece is half

This lumpy piece is half white and half red-brown

The crystal tops have intricate growth patterns across the surface

which is common in our Earth’s upper mantle—and even in space

Dirt was used to "hide" visible glue in the crack near the center of the specimen (you can see the impressions where bubbles have burst from the glue in picture 8)

Erongo schorl typically has very high luster as seen in this piece

Black tourmaline with excellent form and small hyalite Microcline This lumpy piece is halfLocale: Erongo Mountain, Namibia Approx dimensions: 2. 75 x 2. 5 x 2" Approx weight: 375g This large glossy black tourmaline, known as schorl, features the Mercedes termination characteristic of the Erongo region. Erongo schorl typically has very high luster as seen in this specimen. The sides of the piece have beautiful chunky vertical striations, and the faces of the point have faint angular zig zag patterns of the crystal growth form visible. There