Pentagonite

  
 
  
  
Pentagonite on stilbite
  
  
Pentagonite with calcite on mordenite
  
 
  
Pentagonite on stilbite
Origin: Wagholi Quarry, near Poona, Maharashtra, India
Sample size: 7.0 x 3.7 x 3.0 cm (top/2nd row), 2.2 x 1.9 x 1.2 cm (3rd/4th row), 8.2 x 7.7 x 4.0 cm (5th/6th/7th row), 6.2 x 4.3 x 3.0 cm (8th/9th row), 9.8 x 9.5 x 6.2 cm (10th/bottom row)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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