This wonderful dioptase specimen from Tsumeb measures 4.2 x 3.4 x 1.8 cm. It is in great shape, with contact/bruising at the bottom center and middle left where the vein probably tightened. All of the main crystals across the plate are perfect. The deep green dioptase crystals sit on top of a bed of calcites. The calcites are also dusted with olive green duftite: almost a signature of Tsumeb. A wonderful miniature that demands attention in any mineral cabinet!