Black tourmaline and smoky quartz on albite matrix with hyalite Coprolite Layers build up over time

Layers build up over time like a bacterial pearl

” “womb stone

Approx weight: 772g

and a faint phantom

These sandstone coasters are made of Arizona Sierra sandstone sourced from central Arizona

Black tourmaline and smoky quartz on albite matrix with hyalite Coprolite Layers build up over timeLocale: Erongo Mountain, Namibia Approx dimensions: 4. 5 x 4 x 1. 5" Approx weight: 728g (1. 6 lbs) This large specimen is one of my favorites of the Erongo black tourmaline, known as schorl. The piece is a rough aggregate of minerals appearing to contain albite, schorl, and smoky quartz. The front is nearly entirely covered with dozens of blocky small schorl crystals, some displaying the Mercedes termination characteristic of the Erongo region.