Definition from Wiktionary, the free dictionary
- (jewelry) Having a certain optical reflectance effect, which can be likened to the sheen of a spool of silk.
Related terms 
chatoyant (plural chatoyants)
- (mineralogy) A hard stone, such as the cat's-eye, which presents on a polished surface, and in the interior, an undulating or wavy light.
- IPA: /ʃa.twa.jɑ̃/
- Present participle of chatoyer.