Beautiful specimen of Dioptase and Duftite decorating colorless Calcite from this famous locality – Tsumeb Mine, Namibia. The Dioptase crystals are brilliantly lustrous with intense emerald-green color up to 8mm. Many of them are doubly terminated. The crystals are gemmy with marvelous neon green nuances. Lighter green Duftite grows above. The sharp rhombohedral Calcite crystals are strongly lustrous. The contrast is very strong with wonderful colorfulness. It displays attractively all over 360 degree. In excellent condition – some small nicks., Fantastic!