BOULDER OPAL. ...

Description

BOULDER OPAL
Quilpie, Quilpie Shire, Queensland, Australia
"Boulder Opal" is just that: layers of Opal trapped inside ironstone boulders. The precious Opal has filled fractures in the dark, chocolate brown siliceous ironstone - creating a wonderful contrast between the lustrous, bright, glassy Opal and the matte browns and tans of the matrix rock. This classic Queensland Boulder Opal has an extensive amount of precious Opal with a body color that varies from dark blue-black to tan-cream. All parts of the Opal display an uncharacteristically strong amount of "fire".
The predominant fire coloration is blue and green, with occasional flashes of gold and red, typically arranged in a "pin-fire" style. This specimen measures 9 3/8 x 5 ½ x 2 ½ inches (29.6 x 14 x 6.35 cm) and is in fine condition.

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