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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
Subgroups
  • opal
    nameØtypeType of cutPUitem No.
    opal2,0 mmreal, genuineCabochon round1488220
    opal2.5 mmreal, genuineCabochon round1488225
    opal3,0 mmreal, genuineCabochon round1488230
    opal3,5 mmreal, genuineCabochon round1488235
    opal4.0 mmreal, genuineCabochon round1488240
    opal5.0 mmreal, genuineCabochon round1488250
    opal6.0 mmreal, genuineCabochon round1488260
    Opal7.0 mmreal, genuineCabochon round1488270

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