If you want a ring that shimmers brightly with color, is unique from stone to stone, and actually has value, try opal. The only downside is that it's not as to

If you want a ring that shimmers brightly with color, is unique from stone to stone, and actually has value, try opal. The only downside is that it's not as tough as diamond, so you have to take some care not to damage it, although this can be mitigated by the way it's mounted in the ring.