Itacolumite: alternatives and connections

A river in the Nether World or infernal regions; also, the infernal regions themselves. By some of the English poets it was supposed t…

A peculiar small siliceous spicule having a denticulated wheel at each end; -- found in freshwater sponges.

an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in…

Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granul…

A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in sever…

A diamond or other gem of the finest cut, formed into faces and facets, so as to reflect and refract the light, by which it is rendere…

an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in…

A black variety of diamond, found in Brazil, and used for diamond drills. It occurs in irregular or rounded fragments, rarely distinct…

Granular; pertaining to, or having the granular structure characteristic of, the class of meteorites called chondrites.

A combining form meaning a grain, granular, granular cartilage, cartilaginous; as, the chondrocranium, the cartilaginous skull of the…

A fluosilicate of magnesia and iron, yellow to red in color, often occurring in granular form in a crystalline limestone.

The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or r…

A dark green or bronze-colored laminated variety of pyroxene, common in certain igneous rocks.

Resembling a diamond; made of, or abounding in, diamonds; as, a diamond chain; a diamond field.

small common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regions

A mineral, commonly of a yellowish green (pistachio) color, occurring granular, massive, columnar, and in monoclinic crystals. It is a…

Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; as, et…

Laminated, but restricted to the variety of laminated structure found in crystalline schist, as mica schist, etc.; schistose.