Black Opal from Lightning Ridge NSW, size stone 7x5 mm. Black opal is the most valuable of opals and comes from Lightning Ridge, New South Wales. It is distinguished by the black or very dark body colour of the stone and shows colour within or on dark body tone. It can also be a crystal or opaque. It is highly sought after because of its beauty and rarity. With these one-of-a-kind 18 Karat Yellow Gold stud Earrings, you're sure to make a statement. The rare and vibrant Black Opal from Lightning Ridge, New South Wales is set in size stone 7x5 mm, and radiates a stunning contrast with the golden hue. Live on the edge of fashion and make a bold statement of sophistication and rarity.