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Reference Values of Gems
Database updated: 15 Jan 2017
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Sunstone

  • Color: red, orange, yellow, brown, bi-color brown to greenish
  • Hardness: 6.5
  • Refractive index: 1.53 - 1.55
  • Density: 2.54 - 2.63
  • Chemical composition: complex aluminosilicate
  • Crystal structure: triclinic
  • Origins: Canada, USA, Tanzania.

Considered to be a collector's stone, this is a variety of feldspar (plagioclase), with intense red and orange crystals being the most valued. Diffuse inclusions produce the distinctive shimmering effect known as schiller, which does not reduce the value of the stone.

 

Sunstone 14.34 cts. Sunstone 18.02 cts.
Sunstone 14.34 cts.
Published under permission: Miguel Angel Lopez
Sunstone 18.02 cts..
Published under permission: Miguel Angel Lopez

 


Market values of Sunstone  

Occurrence of Sunstone  

Historical values  


 
 
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