This lilac crystal pipe boulder opal displays amazing 3-d effects. The host rock that can be seen underneath adds wonderful dimension and the uv and aqua flash is amazing. I've wrapped it in 22k gold on a 22k and silver. A cluster of tanzanite, pink sapphires and one turquoise on 14k pins sits below the opal.
The simple silver band is a 7 that can be enlarged to a 7 1/4 or 7 1/2.