A large, aesthetic specimen of lustrous, brilliant-black twinned Sphalerite crystals with partial overgrowth of translucent, off-white druzy Calcite crystals. The Sphalerite crystals are well-formed and sharp with a brilliant metallic luster. A beautiful piece in excellent condition.

Location: Trepca Mine, Mitrovica, Kosovo

Size: 10 x 6.5 x 4.5 cm