I have been amused by round shapes lately. This stone is called "Mexican opal." It has creamy colored streaks running through a rich, chocolate brown. I set the stone in my signature design with a peachy pearl accent.
The band is "U" shaped which allows you to put it on sideways to get over a knuckle, and then turn it when it's on the finger. The stone crosses two fingers and is very comfortable. The fits on my size 8 finger because of the "U" shaped band.