Columbia 23, set of 5 artist mined and cut cabochons

Sold as a set, all natural, hand-mined, artist cut cabochons, from the Columbia 23 Mine near Las Vegas Nevada. These stones get their color, mostly, from copper ore. These mixed minerals include malachite, rosasite, chrysocolla, and dioptase in copper ore and dolomite.

These stones fluoresce under a 365mm black light with a cosmos effect.