Beautiful and clear presentation of one Sphalerite cluster set attractively on a floater Calcite base. The Calcite crystals are complete all over with no contact points. They are sharp and very well shaped with strong luster and colorless. The Calcite crystals are translucent and have Sphalerite inclusions. The black Sphalerite tetrahedrons have good luster and are well shaped. Some transparent Quartz crystals grow above. In very good condition – some small damages.

Marvelous!