Black tourmaline with albite, smoky quartz, hyalite, and an aquamarine Magnetite a close relative of chalcedony

a close relative of chalcedony and quartz

**I probably don't need to tell you this

In Atlas Mountain Jasper

taking on an other-worldly intense cobalt blue glow

This calcite specimen from Santa Eulalia is a lovely deep red color from hematite (iron oxide) inclusions

Black tourmaline with albite, smoky quartz, hyalite, and an aquamarine Magnetite a close relative of chalcedonyLocale: Erongo Mountain, Namibia Approx dimensions: 3. 25 x 3 x 1. 75" Approx weight: 417g This large glossy black tourmaline, known as schorl, is accompanied by smaller schorl crystals, smoky quartz, and albite. Some of the smaller schorls have mercedes terminations. It's unclear to me if the main schorl is a single crystal or some product of twinning, but it is a large blocky piece with an offset split through the middle. Erongo schorl typically has