Corundum

  
Sapphire
Origin: Ural Mountains, Russia
Sample size: 3.6 x 3.6 x 3.1 cm
 
  
Origin: Tharaka, Kenya
Ex. Gene Meieran collection
Sample size: 1.8 x 1.5 x 1.5 cm
 
  
Origin: Luc Yen, Yen Bai Prov., Vietnam
Sample size: 4.8 x 4.0 x 3.0 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
  
  
Ruby
Origin: Minh Tien Village, Luc Yen District, Yen Bai Province, Vietnam
Ex. Giorgio Spiga collection
Sample size: 5 x 4.5 x 3 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

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Back to Alphabetical list Physical, chemical and crystallographic description Optical properties/Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra