Pentagonite

  
Pentagonite on stilbite
  
Pentagonite with calcite
  
  
 
  
 
  
Pentagonite on mordenite on matrix
Origin: Wagholi Quarry, near Poona, Maharashtra, India
Sample size: 6.3 x 3.7 x 2.3 cm (top), 3.4 x 2.4 x 2.2 cm (2nd row), 2.1 x 1.3 x 1.0 cm (3rd/4th row), 5.2 x 4.2 x 3.1 cm (5th/6th row), 9.3 x 6.0 x 3.0 cm (7th/bottom row)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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