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.

As a noun onyx

is (mineralogy) a banded variety of chalcedony, a cryptocrystalline form of quartz.

As an adjective onyx

is jet-black.

As a verb jaspera is

.

In mineralogy terms the difference between onyx and jadeite

is that onyx is a banded variety of chalcedony, a cryptocrystalline form of quartz while jadeite is a pyroxene mineral, a sodium aluminium silicate with the chemical formula Na(Al,Fe³⁺)Si₂O₆, found in metamorphic rocks.

As an adjective onyx

is jet-black.

As nouns the difference between oryx and onyx

is that oryx is any of several antelopes, of genus Oryx, native to Africa, the males and females of which have long, straight horns while onyx is a banded variety of chalcedony, a cryptocrystalline form of quartz.

As an adjective onyx is

jet-black.

In mineralogy terms the difference between onyx and jasponyx

is that onyx is a banded variety of chalcedony, a cryptocrystalline form of quartz while jasponyx is a form of onyx, part or all of whose layers consist of jasper.

As an adjective onyx

is jet-black.

As nouns the difference between onyx and onychinus

is that onyx is (mineralogy) a banded variety of chalcedony, a cryptocrystalline form of quartz while onychinus is onyx.

As an adjective onyx

is jet-black.

As nouns the difference between onyx and onycha

is that onyx is (mineralogy) a banded variety of chalcedony, a cryptocrystalline form of quartz while onycha is (obsolete) an ingredient of the mosaic incense, probably the operculum of some kind of strombus.

As an adjective onyx

is jet-black.