Dims: 5.0 x 3.9 x 2.1" (12.7 x 9.9 x 5.3 cm)
Wt: 1 lb., 6.8 oz. (644 g)
A crust made up of hundreds of tiny Dioptase crystals rests on the gray-brown host rock of this cabinet specimen. The crystals that make up this crust are tiny, not exceeding 0.1" (3 mm) in length or 1 mm in diameter. They are generally in good condition, though there are a few patches of crushing damage on the crust, and most appear to have reasonably good trigonal prismatic form. Their deep emerald-green coloration is standard for their species, and their pearly luster gives the crust a slightly dull sparkle. The crust is separated from the sandstone or quartzite host rock by a few layers of chrysocolla, the topmost of which is decayed and chalky. A few veins of this material also extend through the base rock.