THE PREMIER MARKETPLACE FOR REAL OPALS

Oregon Opal Stones

Filters

Trefwoorden

Prijs

Product type

Gewicht (cts)

Lengte (mm)

Breedte (mm)

Diepte (mm)

Buy American Opal Oregon Stones

The opals are found in rhyolite geodes (thunder eggs) in a perlite that has altered to pastel colored clay. The geodes that contain gem-quality opal are only about 10% of the total geodes mined and only about 1% of the geodes contain gem-quality opal with play of color. The remaining geodes contain agate, quartz crystals, or common opal. The geodes vary greatly in size, from a few centimetres in diameter to over a meter