Dioptase on Calcite, Tsumeb Mine, Namibia Miniature 3 x 4 x 5.5 cm $500. Online 11/30
Bright and lustrous, vivid green dioptase crystals, to 6 mm, on undulating matrix of rhombic calcite. Mined ca. mid-1980s. In excellent condition. Betty Kalaskie Collection #760: acquired 1992.