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Reference Values of Gems
Database updated: 15 Jan 2017
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Garnet Color Change


  • Color: color change, from blue, green or greenish yellow to purple, red, brown or orange-yellow.
  • Hardness: 7
  • Refractive index: 1.89
  • Density: 3.85 - 4.00
  • Chemical composition: nesosilicate
  • Crystal structure: isometric
  • Origins: Madagascar.

This is a rare variety of garnet. Prices for garnets with color changing characteristics increase rapidly with weight, and clean specimens over 7 ct. are extremely rare and expensive.


 

 


Market values of Garnet Color Change  

Occurrence of Garnet Color Change  

Historical values  


 
 
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