One of the finer dioptase thumbnail specimens we have seen: A choice cluster of dazzling, deep green, and gemmy Dioptase crystals. This thumbnail is entirely Dioptase, with the largest, 1.5 cm crystal perched beautifully atop the cluster. The Dioptases have superb luster, and they burn with a deep green fire. The condition of the specimen is excellent. A terrific, and very hard to come by, Dioptase thumbnail of top quality, that is WAY beyond the norm, for the sophisticated collector.