Meaning | A milky or greyish translucent to transparent quartz. |
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Synonym | chalcedony |
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Narrower | agate | An impure form of quartz consisting of banded chalcedony |
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bloodstone, heliotrope | green chalcedony with red spots that resemble blood |
carnelian, cornelian | A translucent red or orange variety of chalcedony |
chrysoprase | A green variety of chalcedony valued as a gemstone |
onyx | A chalcedony with alternating black and white bands |
plasma | A green slightly translucent variety of chalcedony used as a gemstone |
sard, sardine, sardius | A deep orange-red variety of chalcedony |
Broader | quartz | A hard glossy mineral consisting of silicon dioxide in crystal form |
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transparent gem | A gemstone having the property of transmitting light without serious diffusion |
Spanish | calcedonia |
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Catalan | calcedònia |
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