279 cts Australian Rough Black Opal Specimen Lightning Ridge with Blue Bar

Item description

Gemstone Type: Rough Black Opal

Weight: 279 carats

Dimensions: L 75.5 mm x W 43.0 mm x H 15.0 mm

Colour: Dark Blue

FREE form

Origin: Lightning Ridge, Australia

Gemstone: Australian Opal

Uses: Specimen

Treatments: None

Australian Solid Opal Rough Lightning Ridge

Water is sprayed on the opal to simulate a polished stone