Opal

  

  

 

  

 

  

 

  

 

  

Opalized clams

Origin: Coober Pedy, South Australia, Australia

Sample size: 2.4 x 2.0 x 1.1 cm (top/2nd row), 2.2 x 1.6 x 0.7 cm (3rd/4th row), 3.0 x 2.2 x 1.1 cm (5th row), 3.3 x 2.6 x 0.9 cm (6th row), 3.8 x 3.0 x 1.4 cm (bottom)

 

 

  

Hyalite opal

Origin: Dalby, Queensland, Australia

Sample size: 4.0 x 3.2 x 2.4 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

White to lightgreen massive pieces with a low Ni-content, variety chrysopal (Prase opal)

Origin: Tagaung Taung Ni-Prospect, 20 Km NE Tagaung, 180 KM N. Mandalay, Myanmar

Sample size: ca. 5 x 5 cm

 

Variety "woodopal"

Origin: Poduraznik, Bania Bystrica, Slovak Republic

Sample size: thumbnail

 

Photo courtesy of: