from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The state or condition of being chatoyant.
from The Century Dictionary and Cyclopedia
- n. The quality of being chatoyant.
It is called chatoyancy, which is a fancy way of saying that the color 'flashes' or 'rolls' across the stone, like cat's-eye but far more vibrantly.
Lubz ebberyfing wif teh schiller oar teh chatoyancy.
So that when viewed from various angles they flash a color, and it's compliment, like the chatoyancy of a cat's eye.