
Black opal
Black opal is a rare and valuable gemstone known for its vibrant play of colors, which can include brilliant reds, blues, greens, and purples against a dark or black background. This striking color contrast enhances its visual appeal. Primarily sourced from Australia, particularly in Lightning Ridge, black opal is formed from layers of silica and is a type of opal that contains enough iron or other minerals to appear darker. Because of its beauty and uniqueness, black opal is highly sought after in jewelry and often considered one of the finest opal varieties.