Today's word of the day (according to dictionary.com ) is: Chatoyant
1. Having changeable lustre; twinkling.
2. (Of a gem, esp a cabochon) displaying a band of light reflected off inclusions of other minerals.
Actually derived from the French chatoyer , "to gleam like a cat's eyes," from the French chat , "cat."
And another nifty fact: back in the day when nations had to start aligning multiple dialects to create one unified language; obviously they needed a method to do so. The French decided that they would pick the word that held the most heritage and history of origin. The Italians chose the word that sounded the nicest - hence Italian is referred to as the most beautiful language.
And now you know.