"Pearlstone" is a word in ENGLISH

A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It …

A genus of small glassy heteropod mollusks found swimming at the surface in mid ocean. See Heteropod.

A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges.

A glassy drop of molten flux, as borax or microcosmic salt, used as a solvent and color test for several …

Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.

A mineral occuring in glassy rhombohedral crystals, varying, in color from white to yellow or red. It is essentially a …

A genus of oceanic heteropod Mollusca, having a thin, glassy, bonnet-shaped shell, which covers only the nucleus and gills.

A minute mineral form like those common in glassy volcanic rocks and some slags, not having a definite crystalline outline …

A borosilicate of lime commonly occuring in glassy,, greenish crystals.

The act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into …

A glassy, opaque bead obtained by the blowpipe.

A genus of elegant, glassy sponges, consisting of interwoven siliceous fibers, and growing in the form of a cornucopia; -- …

A smooth, bright, glassy surface; as, a glare of ice.

Any substance having a peculiar glassy appearance, and a conchoidal fracture, and usually produced by fusion.

Glassy; glazed.

Glassy; shining like glass.

The quality of being glassy.

A remarkable vitreous sponge, of the genus Hyalonema, first brought from Japan. It has a long stem, consisting of a …

A siliceous sponge, of the genus Hyalonema, and allied genera; -- so called from their glassy fibers or spicules; -- …

Dull; wanting life or fire; lackluster; -- said of the eyes.