light opal
crystal opal
boulder opal
boulder matrix opal
black opal
composite opal
This opal is mostly found in fields in far south western Queensland. The opal, over time has filled in the minute cavities and voids within the host rock (usually iron stone). Unlike regular Boulder Opal the host rock is part of the visual attraction of the stone, the blend of the opal and rock creates unique patterning, colour, and texture. The fields, from which Boulder Matrix Opal is sourced, have distinct differences in the appearance of the opal they produce.