Spinel

  

 

  

 

  

 

  

 

  

 

  

 

 

  

Blue spinel

Origin: Kaiiado District, Rift Valley Province, Kenya

Sample size: 4.4 x 3.2 x 2.2 cm (top), 5.2 x 5 x 2 cm (2nd row), 5.5 x 3.7 x 3.5 cm (3rd row), 4.5 x 3.6 x 2.5 cm (4th row), 5.6 x 3.4 x 1.7 cm (5th row), 4.4 x 3.7 x 1.8 cm (6th row), 3.7 x 3.5 x 3.4 cm (7th row), 3.5 x 2.7 x 2 cm (bottom)

 

  

 

  

Spinel on marble

Origin: Luc Yen, Yenbai Province, Vietnam

Sample size: 8.2 x 5.1 x 3.3 cm (top), 14.6 x 11.2 x 4.0 cm (bottom)

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

Origin: Sparta, Sussex Co., New Jersey, United States

Sample size: 8.5 x 5 x 4 cm

 

Photo courtesy of: