The corpus record
sardonux · ὁ
sardonyx
Generated live from the audited corpus — every figure on this page is a database query, not prose from memory.
sardonyx, Philem. 216, Gal. 5.46, AP 1.116, J. AJ 3.7.5, BJ 5.5.7, Apoc. 21.20, Ps.-Plu. Fluv. 20.4, etc. The stone was called ὄνυξ when the dark ground was simply spotted or streaked with white, but σαρδόνυξ if the different colours were disposed in layers.
No etymology authority pointer is recorded for this lemma yet — an honest gap, not an omission. The etymological dictionaries (Beekes, Chantraine, Frisk) are matched incrementally.