Dioptase      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An superior grouping of large crystals to 2 cm each of good clarity and excellent color and luster.  The piece measures a 3.4 x 2.8 x 2 cm, barely fitting in a TN sized perky box.   Mounted in a perky box.  This is one of those fantastic examples that displays great in screams of importance due to the unusually large primary crystal.  Some edge contact on very back of big crystal and one tiny crystal low on matrix, at edge is clipped.  Still an impressive thing.    $1,500