Australian black opals are some of the rarest and most stunning gemstones in the world. Found primarily in Lightning Ridge, Australia, they are known for their dark body tone, which makes the vibrant play-of-color—reds, blues, greens, and purples—stand out dramatically. The colors shift as the opal moves, giving it a lively, almost fiery appearance. Their rarity and striking beauty make them highly sought after in jewelry and collections worldwide.