A double sided opal, this is a collectible piece of solid Australian black opal loose showing beautiful colors ... one side shows rainbow color, other saide shows flashy green color. Just fun to see the change in both sides and it van not be repeated. This quality is only to be found at Lightning Ridge, NSW, Australia.
The shape of opal. Our opal comes in Oval, Round, Teardrop, Square, Triangle and Free Shape.
Describes the arrangement of opal's play of colour. Please see Learn About Opal to understand more.
B1 is most desired and brightest to be seen, and B7 is most darkest / dullest of all.