Queensland Boulder opal, one of a kind slice fearturing swirls of white opal cloud and ribbons of rainbow crystal opal. It looks like a cloudy landscape from a magical land.
Measuring 20MM long and 8mm wide, this rectangular stone is bezel set securely, surrounded in silver beadwork, and resting atop a solid, sturdy band. Hand sculpted and crafted in sterling silver.
Boulder opal is comprised of opal material found in small deposits in ironstone. Mining this unique stone requires a sharp eye to seek out the ribbons of rainbow in the desert rock formations. Boulder opal is found primarily in the desert outback of Queensland, Australia, in cracks, crevices and cavities. Silica from dissolved sand trickled down cracks and crevices in ironstone boulders and the silica precipitated out of this solution to form these radiant colors. Generally, the opal is found within boulders which need to be broken open. These are found in clay layers just above the ironstone, and sometimes tons of rock must be hand-processed to find a few precious stones.