1 entry 1 source
Opal
Open directlyWebster's 1828 Dictionary · 1828
Part of speech: noun (n.)
A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.
1 entry 1 source
Part of speech: noun (n.)
A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.