Colemanite

Item Description

Superb pair of intergrown Colemenite crystals. These beautiful crystals have a sharp, excellent habit with modified edges and translucent to gemmy interiors. Formed in evaporite deposits, Colemanite is a secondary mineral that forms by the alteration of Borax and Ulexite. The largest crystal is 2.3 cm on edge, and does have some minor contacting along the bottom side. Small perhaps, but One of the best Colemanites I've seen.