'Into The Cosmos' is a brilliant and beautiful multi-coloured, teardrop-shaped natural solid black opal, ideal for a necklace pendant or ring setting, or to add to your personal opal collection. 'Into The Cosmos' was ethically mined and sourced direct from opal miners in Lightning Ridge, Australia. Opal weight: 4.05 caratsOpal size: 14mm x 12mmOpal shape: TeardropOpal type: Solid black opalOpal colour: Multi-colourOpal origin: Lightning RidgeSKU: OS193 ABOUT BLACK OPALS Found only in Australia, mainly at Lightning Ridge in outback New South Wales, black opal is the world's rarest and most valuable type of opal. Ablaze with a rich and vibrant rainbow of colour set against a dark or black body tone, black opal is highly prized for its intense spectrum and features in the world's finest jewellery collections. If an opal's body tone is dark but not truly black, it is known as dark opal. Read more about Australian opals.