Emplaced aesthetically on a knob of contrasting sparkly dolomite matrix are lustrous, dark green spheres to 3 mm across, of conichalcite. This is an uncommon, calcium, copper, arsenate and it is rare in the form of such isolated crystals or crystal aggregates as you see here (forming little ball-shaped growths).This lovely specimen is double sided and can be exhibited in more than one display angle. From the original collection of Marshall and Charlotte Sussman, sold in 2003.