Thumbnail, 2.5 x 2.1 x 1.4 cm
Tsumeb Mine, Tsumeb, Namibia

This dramatic thumbnail crystal of dioptase is perched on a pedestal of massive dioptase, and is just a hair under an inch long, and doubly-terminated. It displays phenomenally! It is complete on the front, but contacted in back (or it would be much more expensive as well). But, it displays as if it were one of the finest dioptase single crystal thumbnails you could want.