Cadmium smithsonite is one of the hardest to find varieties, especially with a nice yellow color. This piece from the old world's only real location for cadmium smithsonite and is a great example for the variety. This piece probably came out at the turn of the 1900s or from the dumps shortly thereafter. Botryoidal smithsonite covers the display surface of the piece with groups to 1.7cm. The surface of the crystals have a smooth glassy luster. Very attractive piece in the case. Richard Barstow and Hauck collection labels accompany the specimen. Barstow was the major English collector of his day, and had a noted collection.