plural of opalization

Having a structure similar to that of opal

(poetic) opalescent; misty or milky in appearance

Alternative form of opaled

plural of fire opal

Any transparent to translucent opal with a warm body colour of yellow, orange, or red.

An opal consisting of concretions and fracture fillings in a dark siliceous ironstone matrix.

plural of boulder opal

A yellow variety of opal resembling jasper.

A type of opaque, translucent glass.