Dioptase      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An attractive grouping of large crystals to .7 cm each of good clarity and excellent color and luster.  The small plate measures 1.9 x 1.7 x 1 cm and is damage-free.  Mounted in a perky box.  Really attractive and bright.   $280