Spinel

  

This specimen has numerous octhaedral spinel crystals to 0.8 cm across and a scattered crystals of pale green diopside.

  

Origin: Morogoro, Tanzania, Africa

Sample size: 5.5 x 3.5 x 2.8 cm (top/2nd row), 7 x 5 x 4.2 cm (3rd/bottom row)

 

Photo courtesy of: 

 

  

  

Origin: Pein Pyit, Mogok, Mandalay Division, Myanmar

Sample size: 0.8 x 0.7 x 0.4 cm

 

 

  

 

 

  

Origin: Morogoro, Tanzania

Sample size: 1.6 x 1.6 cm (top), 1.5 x 1.3 cm (2nd row), 1.9 x 1.7 cm  (3rd row), 1.7 x 1.7 cm (bottom)

 

  

  

Spinel on marble
Origin: Mogok, Mandalay, Burma

Sample size: 9.0 x 5.2 x 2.6 cm

 

  

  

Origin: Crazy Sphinx Mine, Helena, Lewis and Clark Co., Montana, U.S.A.

Ex. Bart Cannon collection

Sample size: 3.5 x 3.3 x 2.0 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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