About: Quarium   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The crystals are sometimes perfectly colorless and transparent, but more often they are greyish or yellowish and only translucent; occasionally they are pale rose-red. In general appearance the mineral is not unlike quartz, for which indeed it has been mistaken. Quarium is found in high-temperature pegmatite veins and in mica-schists. For gem purposes the stone is cut in the brilliant form. The indices of refraction are high; a faceted Quarium is consequently rather brilliant and may sometimes be mistaken for diamond.

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rdfs:label
  • Quarium
rdfs:comment
  • The crystals are sometimes perfectly colorless and transparent, but more often they are greyish or yellowish and only translucent; occasionally they are pale rose-red. In general appearance the mineral is not unlike quartz, for which indeed it has been mistaken. Quarium is found in high-temperature pegmatite veins and in mica-schists. For gem purposes the stone is cut in the brilliant form. The indices of refraction are high; a faceted Quarium is consequently rather brilliant and may sometimes be mistaken for diamond.
dcterms:subject
abstract
  • The crystals are sometimes perfectly colorless and transparent, but more often they are greyish or yellowish and only translucent; occasionally they are pale rose-red. In general appearance the mineral is not unlike quartz, for which indeed it has been mistaken. Quarium is found in high-temperature pegmatite veins and in mica-schists. For gem purposes the stone is cut in the brilliant form. The indices of refraction are high; a faceted Quarium is consequently rather brilliant and may sometimes be mistaken for diamond.
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