opal
The opalescent is opalescent. This is called rainbow-like iridescence, which changes according to the view and makes the opals so unique.
OPAL
Colour: all colors, partial opalizing
Mohs hardness: 5.5-6.5
Density: 1.98-2.5
Transparency: transparent to opaque
Fracture: small-shell, splitting, brittle
OPAL
Colour: all colors, partial opalizing
Mohs hardness: 5.5-6.5
Density: 1.98-2.5
Transparency: transparent to opaque
Fracture: small-shell, splitting, brittle