This is a super unusual and sculptural Dioptase miniature featuring a dual cast of Dioptase after botryoids of a previous and now exsolved mineral, maybe Smithsonite? The interior of this attractive cast is lined with small, scintillating crystals of emerald green Dioptase that sparkle with any amount of ambient lighting at any orientation! A few tiny, yellow Wulfenite crystals are scattered at the periphery for added contrast along with the white Quartz crusts for accent. The back of the piece reveals the botryoidal nature of the original mineral and also has additional Wulfenite crystals present. Casts of secondary minerals are not uncommon from Tsumeb; however, those with Dioptase are very rare!