A deep forest green along with other colors, showing a great play of color, has a high cabochon, rounded shape which is desirable, this type of black opal has not been found lately so don't miss a chance. Only to be found at Lightning Ridge, NSW, Australia, guaranteed you will love it !!
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.