One of the most coveted Tsumeb classics is this amazing colour combo: discrete rich emerald green Dioptase set on colour contrasting white Calcite. And it must be the sparkling kind of white Calcite, not the bland white pasty luster of some. This specimen is such an example - a superb miniature! Highly lustrous and translucent, deep emerald green Dioptase crystals are emplaced beautifully on white calcite. Despite not absolutely perfect this is anyway a great piece and compared with the prices they are asking in the internet a relatively highly valuable specimen. A distinct cleaning could improve the specimen a lot.