Dims: 1.09x1.07x0.69" (2.77x2.72x1.75cm)
Wt: 0.67oz (19.0g)
Malyshevo mine, Ural, Russia
This is a single crystal of phenakite, a beryllium silicate mineral. It is roughly hexagonal in shape, with roof shaped edges. It is incomplete, showing only 6 (of a possible 14) faces. It is colorless and transparent, with a rough exterior that makes it difficult to see into the interior, except at a few spots where fractures expose a somewhat vitreous surface. Also, parts of the surface are coated with a thin layer of muscovite crystals.