This specimen has sparkly crystals of an unusual color of smithsonite, probably caused by minute copper content. However, where usually you would expect green color to result, the piece here is more yellow-green, with subtle gradients and zonations of color that I have not seen from Tsumeb on the same specimen very often at all. The crystals are complex, and sharp. While there is some minor damage, the piece is very 3-dimensional and overall is in good shape. From an old collection. Joe Budd photos