Sardonyx

·noun A variety of onyx consisting of sard and white chalcedony in alternate layers.

Sardonyx
SARDO´NYX(Σαρδώνυξ), a mountain or chain of mountains in Hindostan, noticed by Ptolemy (Ptol. 7.1. §...

Dictionary of Greek and Roman Geography
sardonyx
sardŏnyx, ychis, m. and f., = σαρδόνυξ, a precious stone , sardonyx; fem. , Plin. 37, 6, 23, § 85...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
sardonyx
sardonyx ychis, m and f , σαρδόνυξ, a precious stone, sardonyx, Iu. ...

An Elementary Latin Dictionary