chatoyant

Meanings

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

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.

Etymology

From French chatoyant, present participle of chatoyer (“to iridesce, like a cat's eye”), from chat (“cat”, because of the reflective qualities of a cat's eye).