'Aquatic Garden' is a rare and unique freeform-shaped natural solid black opal featuring a dazzling floral pattern in rich and vibrant blue and green tones. This beautiful black opal is Ideal for a necklace pendant setting or to add to your personal opal collection. 'Aquatic Garden' was ethically mined and sourced direct from opal miners in Lightning Ridge, Australia. Opal size: 15mm x 6mmOpal weight: 2.65 caratsOpal shape: FreeformOpal type: Solid black opalOpal colour: Green and blueOpal origin: Lightning RidgeSKU: OS189 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.