chatoyant

Etymology
From, present participle of , from.

Adjective

 * 1)  Having a certain optical reflectance effect, which can be likened to the sheen of a spool of silk.

Related terms

 * chatoyancy

Noun

 * 1)  A hard stone, such as the cat's-eye, which presents on a polished surface, and in the interior, an undulating or wavy light.

Adjective

 * 1) shimmering, iridescent