☑ AVAILABLE NOW☑ GENUINE AUSTRALIAN OPAL☑ FREE EXPRESS WORLDWIDE SHIPPING & INSURANCE OPAL DETAILS'Midnight Blue' is a beautiful blue oval-shaped natural solid black opal features a fire pattern and is ideal for a necklace pendant setting. 'Midnight Blue' was ethically mined and sourced direct from opal miners in Lightning Ridge, Australia. Opal weight: 3.75 carats Opal size: 11.5mm x 13.6mm Opal shape: Oval Opal type: Solid black opalOpal origin: Lightning Ridge Opal colour: BlueOpal pattern: Fire SKU: OS064 Shipping and Delivery Information 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.