3
moonstone(noun, jewelry, gem)
3
sardonyx(noun, jewelry, gem)
3
turquoise(noun, jewelry, gem)
2
atramentous(adjective, obscure, dark, gloomy, pitch)
2
ebony(adjective, black, colors)
2
heliotrope(noun, jewelry)
2
inklike(adjective, obscure, dark, gloomy, pitch)
2
jet(adjective, black, colors)
2
jetty(adjective, black, colors)
2
melanoid(adjective, obscure, dark, gloomy, pitch)
2
obsidian(adjective, obscure, dark, gloomy, pitch)
2
opal(noun, jewelry, gem)
2
piceous(adjective, obscure, dark, gloomy, pitch)
2
pitch(adjective, obscure, dark, gloomy, black)
2
quartz
2
raven(adjective, obscure, dark, gloomy, pitch)
2
sloe(adjective, obscure, dark, gloomy, pitch)
2
sombre(adjective, obscure, dark, gloomy, pitch)
2
sooty(adjective, black, colors)
2
starless(adjective, obscure, dark, gloomy, pitch)
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APASmart Define. (2015). onyx thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/onyx/thesaurus/synonyms
ChicagoSmart Define. 2015. "onyx thesaurus" https://smartdefine.org/onyx/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, onyx thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/onyx/thesaurus/synonyms>.
MLASmart Define. "onyx thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/onyx/thesaurus/synonyms>