Pentagonite

  
  
 
  
Pentagonite on stilbite
  
Pentagonite with heulandite
  
 
  
 
  
Pentagonite on stilbite
Origin: Wagholi Quarry, Poona, Maharashtra, India
Sample size: 6.8 x 5.5 x 3.5 cm (top/2nd row), 4.5 x 2.7 x 2.5 cm (3rd/4th row), 3.2 x 2.4 x 1.7 cm (5th/6th row), 7.4 x 4.5 x 3.0 cm (7th/8th row), 5.4 x 5.4 x 3.4 cm (9th row), 2.9 x 2.2 x 2.0 cm (bottom left), 2.7 x 2.4 x 2.2 cm (bottom right)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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