A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone.
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A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.
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A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone.
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A kind of glass, containing gold-colored spangles. It was produced in the first place by the accidental (par aventure) dropping of some brass filings…
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A cryptocrystalline, translucent variety of quartz, having usually a whitish color, and a luster nearly like wax.
Open English WordNet identifies the related term as a narrower or more specific lexical category.
Like a citron or lemon; of a lemon color; greenish yellow.
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Aventurine feldspar. See under Aventurine.
Open English WordNet identifies the related term as a narrower or more specific lexical category.
A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes oc…
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An inorganic species or substance occurring in nature, having a definite chemical composition and usually a distinct crystalline form. Rocks, except…
Open English WordNet identifies the related term as a broader lexical category for at least one sense.
A syllable applied, in solmization, to the note B; more recently, to the seventh tone of any major diatonic scale. It was added to Guido's scale by L…
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Silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodor…
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A nonmetalic element analogous to carbon. It always occurs combined in nature, and is artificially obtained in the free state, usually as a dark brow…
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The regular form which a substance tends to assume in solidifying, through the inherent power of cohesive attraction. It is bounded by plane surfaces…
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