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nouna milky or greyish translucent to transparent quartz
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Definition that contains chalcedony
- flint a hard kind of stone; a form of silica more opaque than chalcedony
- plasma a green slightly translucent variety of chalcedony used as a gemstone
- sardine a deep orange-red variety of chalcedony
- onyx a chalcedony with alternating black and white bands; used in making cameos
- heliotrope green chalcedony with red spots that resemble blood
- agate an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles
- bloodstone green chalcedony with red spots that resemble blood
- sard a deep orange-red variety of chalcedony
- carnelian a translucent red or orange variety of chalcedony
- sardius a deep orange-red variety of chalcedony