Dioptase

  
Origin: Mindouli, Congo, Africa
Sample size: 5.4 x 4.4 x 2.2 cm
 
  
 
  
  
Dioptase on mottramite
  
Bright green, lustrous dioptase crystals with a selective coating of malachite microcrystals, on a bed of calcite crystals
  
Dioptase on calcite, Ex. Ralph Heitman Collection
Origin: Tsumeb Mine, Tsumeb, Namibia
Sample size: 14.1 x 8.6 x 6.3 cm (top/2nd row), 5.6 x 3.6 x 2.0 cm (3rd/4th row), 5.4 x 4.5 x 3.0 cm (5th/6th row), 4.5 x 2.2 x 2.0 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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