Boulder Opal is a type of unique rock found in Queensland, Australia. It is easily identifiable because it is a mixture of ironstone and opal either in a matrix or layered; the stones often have a more ‘Earthy’, ‘rocky’ look and feel about them. Read More
Boulder opals are arguably the most affordable opal available. Check out Opal Galaxys huge range of Pipe Crystal Opals ideal for jewellery making enthusiasts.