sardius |
onyx |
In mineralogy|lang=en terms the difference between sardius and onyx
is that
sardius is (mineralogy) sard while
onyx is (mineralogy) a banded variety of chalcedony, a cryptocrystalline form of quartz.
As nouns the difference between sardius and onyx
is that
sardius is (mineralogy) sard while
onyx is (mineralogy) a banded variety of chalcedony, a cryptocrystalline form of quartz.
As an adjective onyx is
jet-black.
sardius |
chrysolite |
As nouns the difference between sardius and chrysolite
is that
sardius is (mineralogy) sard while
chrysolite is (mineral) originally, any of various green-coloured gems; later specifically peridot.