A superb specimen of gem olive-green sphalerite var. cleiophane crystals to 14mm from the famous Madan ore field, Bulgaria. They are chunky, transparent and gem with a rich color. They have glassy faces that beautifully reflect the light. The are twinned. Galena cubes enrich the display. Spiky quartz crystals form the base. It displays attractively all over 360 degree. The bottom is sawed. In very good condition – some small damages.

Exquisite gem sphalerite!