chalcedony
English Thesaurus
1. a milky or greyish translucent to transparent quartz (noun.substance)
| hypernym | : | quartz, |
| definition | : | a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities (noun.substance) |
| hypernym | : | transparent gem, |
| definition | : | a gemstone having the property of transmitting light without serious diffusion (noun.substance) |
| hyponym | : | agate, |
| definition | : | an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles (noun.substance) |
| hyponym | : | bloodstone, heliotrope, |
| definition | : | green chalcedony with red spots that resemble blood (noun.substance) |
| hyponym | : | carnelian, cornelian, |
| definition | : | a translucent red or orange variety of chalcedony (noun.substance) |
| hyponym | : | chrysoprase, |
| definition | : | a green variety of chalcedony valued as a gemstone (noun.substance) |
| hyponym | : | onyx, |
| definition | : | a chalcedony with alternating black and white bands; used in making cameos (noun.substance) |
| hyponym | : | plasma, |
| definition | : | a green slightly translucent variety of chalcedony used as a gemstone (noun.substance) |
| hyponym | : | sard, sardine, sardius, |
| definition | : | a deep orange-red variety of chalcedony (noun.substance) |
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