Boulder Opal wrapped in 14k gold fill, sterling, & copper.
Size 9.75, wide band (size up)
Boulder opals are found only in the state of Queensland, Australia. Boulder opal is found embedded in large boulders of ironstone, which is how it earned its name. As opal miners attempt to remove the embedded opal from the ironstone, some of the host matrix is preserved during the process. For this reason, boulder opal is sometimes referred to as 'opal in matrix'. Thin veins of colourful opal forms in cracks and fissures in these boulders. It is this thin layer of opal in boulder opals that can display any colour of the spectrum in a beautiful play of colour and design.