Colemanite (James Thompson Coll.)

Item Description

Sharp, glassy, spearpoint blades of colemanite crystals form a very shapely, chevron-shaped specimen from the famous mines at Boron. In excellent shape, overall, with only periphery wear on the lower left edge and base. MUCH, MUCH BETTER PERSON! VERY difficult to photgraph. Ex James Thompson Collection [1921-2011], mineralogist and petrologist, professor emeritus at Harvard University.