Sardonyx

• (n.) A variety of onyx consisting of sard and white chalcedony in alternate layers.
Found on http://thinkexist.com/dictionary/meaning/sardonyx/

sardonyx

(from the article `sard and sardonyx`) translucent, light- to dark-brown varieties of the silica mineral chalcedony, historically two of the most widely used semiprecious stones. Sard and ... ...Among the earliest surviving examples of the great imperial cameos are the Blacas onyx (British Museum, London), portraying Augustus in the gu...
Found on http://www.britannica.com/eb/a-z/s/31

sardonyx

noun an onyx characterized by parallel layers of sard and a different colored mineral
Found on https://www.encyclo.co.uk/local/20974

Sardonyx

[guitar] The Sardonyx was an electric guitar made in small numbers in the late 1970s. The guitar was notable because of its small rectangular wood body that had `outrigger` aluminum tubes running parallel to the body. Popularized by Howard Leese, then guitarist for Heart, it was one of the two main guitars used by John Lennon during the rec...
Found on http://en.wikipedia.org/wiki/Sardonyx_(guitar)

Sardonyx

Sar'do·nyx noun [ Latin , from Greek .... See Sard , and Onyx .] (Min.) A variety of onyx consisting of sard and white chalcedony in alternate layers.
Found on http://www.encyclo.co.uk/webster/S/17

Sardonyx

HMS Sardonyx was a British Admiralty S Class destroyer of 905 tons displacement launched about 1918. She was armed with three 4-inch guns; five smaller guns and four 21-inch torpedo tubes arranged in pairs. She was powered by three Yarrow oil boilers providing a top speed of 31 knots and carried a complement of 98.
Found on http://www.probertencyclopaedia.com/browse/RS.HTM

sardonyx

[n] - an onyx characterized by parallel layers of sard and a different colored mineral
Found on http://www.webdictionary.co.uk/definition.php?query=sardonyx
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