410 cts Australian Boulder Opal Rough Specimens x 5 pcs

Item description

Weight: 410 carats

Dimensions: L 18.8 - 41.0 mm x W 14.5 - 32.9 mm x H 11.5 - 16.0 mm

Colour: Green/ Blue Multi-colour

Origin: Australia QLD

Uses: for cutting or specimen

Gemstone: Australian Rough Boulder Opal

Uses: Mineral Collection

Treatments: None

Water is sprayed on the opal to simulate a polished stone.