Corundum

  

 

  

Ruby

Origin: Luc Yen, Yen Bai District, Vietnam (North)

Sample size: 4.8 x 3.5 x 3.3 cm (top), 3.5 x 2.4 x 2.0 cm (bottom)

 

  

Sapphire

Origin: Sri Lanka (Ceylon)

Sample size: 3.9 x 1.1 x 0.7 cm

 

Sapphire

Origin: Ratnapura, Sri Lanka (Ceylon)

Sample size: 2.5 x 0.8 x 0.6 cm

 

 

Sapphire

Origin: Ceylon (Sri Lanka) Gem Gravels

Sample size: 1.6 x 0.9 x 0.7 cm (top), 3.9 x 0.9 x 0.8 cm (bottom)

 

  

 

     

 

  

  

Sapphire

Origin: Gem Gravels, Sri Lanka (Ceylon)

Sample size: 2.9 x 1.1 x 0.8 cm (top), various sizes: from 1.8 x 0.9 x 0.5 cm to 3.1 x 1.0 x 0.9 cm (2nd/3rd row), various sizes: from 1.2 x 1.1 x 0.6 cm to 2.5 x 1.0 x 0.6 cm (4th/bottom row)

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

Foliated piece of corundum ore with magnetite crystals and hematite

Origin: Naxos, Greece

Sample size: 4.5 x 5.5 cm

 

Photo courtesy of: 

 

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