Boulder Opal

Boulder opal is found in central Queensland Australia. It is renowned for its unique patterns with notable pieces coming from koroit and yowah. Generally formed in horizontal and vertical cracks or voids in hard ironstone boulders. This opal usually forms in very thin seams so the ironstone backing is usually left on the piece. 

Another formation of boulder opal is matrix opal. Where the opal infills voids or between grains and in pores of the parent material producing interesting patterns.  


Lightning Ridge Opals

Coober Pedy Opals

Boulder Opals

Fossil Opals

Opal Jewellery