Found 2 items, similar to sardonyx.
English → English (WordNet) Definition: sardonyx sardonyx n : an onyx characterized by parallel layers of sard and a different colored mineral
English → English (gcide) Definition: Sardonyx Sardonyx \Sar"do*nyx\, n. [L., fr. Gr. ?. See Sard, and Onyx.] (Min.) A variety of onyx consisting of sard and white chalcedony in alternate layers. [1913 Webster]