Danburite

  
 
  
 
  
These are the only blue danburite crystals that I have ever seen from any locality. Truly the crystals themselves are colourless, but are included by a rare amphibole called magnesioriebeckite, for which this is the type locality.
Origin: Alto Chapare, Chapare Province, Cochabamba Department, Bolivia
Sample size: 4.6 x 4.0 x 3.0 cm (top), 6.3 x 5.5 x 3.9 cm (2nd/3rd row), 13.2 x 7.0 x 3.9 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Danburite crystal measuring 15 x 13 x 26 mm on anhydrite matrix
Origin: Alto Chapare District, Chapare Province, Cochabamba Department, Bolivia
Sample size: 4 x 2.6 x 2.7 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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