Here you will find Boulder Opals that have been cut and polished to extract the best play of colour and are ready to be used for creations or collection.
Boulder Opals, characterised by solid brown ironstone matrix or layers, are the second most valuable opals in the world after Black Opals and Australia its only source, primarily Queensland.
Patterns and types can be related to the opalfield they are mined from. To help with selective viewing, you will find Koroit opals in its own category due to its uniqueness. We also created a region filter to select areas like Yowah, other smaller opal fields may be mentioned in the stone detailed description along with patterns and colours.