A stunning, SHARP thumbnail gold crystal of a quality that is so rarely seen in this material, with razor sharp and smooth, unpitted faces. Crystals this size usually show etching that mars the symmetry of the sharp ingrown hopper forms. This crystal, though, is so fine and sharp it looks carved. It is a rare, elongated habit of crystallization. Most of the octohedral crystals from here are worn, or asymmetric, or both - so this is a superb example and a major thumbnail gold specimen from finds of the early 1990s. From the collection of Hubert De Monmonier (1919-2007), donated by bequest to the University of Arizona Museum to add to their displays and to provide specimens for sale to establish an endowment fund for museum operations, in perpetuity.