Dims: 2.41x2.12x1.24" (6.11x5.39x3.14cm)
Wt: 3.77oz (106.7g)
Altyn-Tyube, Karaganda oblast, Kazakhstan
This specimen displays a lot of dioptase crystals. They nearly cover one side, and some of them wrap around to the other. They have the usual intense green (with a touch of blue) color, the crystals are transparent and have a vitreous luster. The many internal fractures block the clarity of the crystals, yet they add to the sparkle as they are the source of the bright green flashes emitted by the specimen. Note that many of the crystals are damaged: it appears that this specimen was in contact with the other side of the crevice, and removal created several essentially flat areas of fracture surfaces. These areas appear nearly opaque, and have a much lighter appearance, which can add to the specimen's appeal, as it highlights the deep green of the bulk of the crystals.