There isn't as much that is as attractive to the eye as a sparkling, gemmy Dioptase (nor as hard to photograph, for that matter) from world-famous Tsumeb. These crystals have superb luster, and gemminess that results in a wonderful green fire. They sit on a white Calcite matrix that peeks out from the middle - an association that is always desirable. The largest crystal is about 1 cm, and there are several among this rich cluster. Aesthetic, and quite reasonably priced.