Dims: 0.7" x 0.45" x 0.4" (1.7 x 1.1 x 1 cm)
Wt: 10.9 g. w/ base
Uruchacua Mine, Ancash, Peru
Perhaps the simplest type of specimen, this Rhodocrosite consists of one incomplete but beautifully-formed crystal. It has a hexagonal prismatic shape with double shallow trigonal pyramidal terminations and is free from damage. There is a fracture line running cleanly through the crystal that neatly bisects it, but there is no separation between the two halves, and for all practical purposes the crystal's structural integrity is not compromised-- simply put, I pried it off of the putty that affixed it to its acrylic base, and it did not break. Though it is somewhat cloudy, the specimen has an impressive amount of transparency, enabling the viewer to see at least a short distance into the stone. The crystal is a rather deep pink, which is probably accentuated by a moderate spot of black matrix(likely a manganese oxide). The prism faces have subtle but complex growth patterns near their edges and a pearly to waxy luster, whereas the termination faces have much more cleanliness, and thus tend to have a pearly to vitreous luster. Though incomplete, this is a really wonderful little thumbnail specimen that is almost gem-grade.