(mineralogy) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O.

A female given name from English from the precious stone, invented in the nineteenth century.

plural of opal

simple past tense and past participle of opalize

Converted into a form of opal or chalcedony

(transitive) To convert into a form of opal or chalcedony, especially to convert wood into such a fossilized form. / (transitive) To make opalescent.

present participle of opalize

Third-person singular simple present indicative form of opalize

(chiefly Australia) The women's national basketball representative team of Australia.

The process of making something opalescent, or of converting wood etc into opal.