Opal

  

Opalized clam

  

Opalized clam and snails, ex. Gene Meieran collection

  

Opalized mollusc

Origin: Coober Pedy, South Australia., Australia

Sample size: 2.5 x 1.9 x 1.4 cm (top),  4.4 x 3.4 x 2.1 cm (largest) (2nd row), 2.5 x 2.0 x 1.4 cm (bottom)

 

  

Opalized gastropod

Origin: White Cliffs, New South Wales, Australia

Ex. Gene Meieran collection

Sample size: 1.75 x 1.25 x 0.8 cm

 

  

Hyalite opal

Origin: Valec, Czech Republic

Sample size: 5.5 x 4.6 x 4.6 cm

 

  

Origin: Opal Butte, Oregon, U.S.A.

Sample size: 7.6 x 5.8 x 4.4 cm

 

 

  

Opalized ammonite

Origin: Mujunga, Madagascar

Sample size: 2.9 x 2.5 x 1.0 cm (top), 3.5 x 2.8 x 1.3 cm (2nd/bottom row)

 

  

Opalized wood

Origin: Haskovo, E-Rhodopes Mts, Bulgaria

Sample size: 13.3 x 9 x 5.5 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

White to creamy partly globular crust on matrix

Variety fiorite

Origin: Santa Fiora, Italy

Sample size: 2.5 x 3 cm

 

Photo courtesy of: