A wonderful sized combination specimen of green dioptase with beautifully contrasting yellow mimetite.  The dioptase crystals are arranged in ball-shaped aggregates, which are clustered together over the mimetite coated matrix.   There is some stubborn dirt not he right side of the piece.

This one does a particularly good job of illustrating how the more famous radiating/ circular pseudomorphs are found-- a lot of them started off as a bubbly looking layer with a hollow space underneath.  In the case of those specimens, that layer is just broken off the matrix to reveal the sparkly underside. This piece has some of the attractive dioptase/ mimetite combination on the main face, but on the side also illustrates the bubbly, crust like habit of the material.