Black opal is from Lightning Ridge Australia. Solid natural black opals are the rarest opals in the world as each is so unique when formed, so rare to get 2 opals the same colour n brightness. Red fire is the rarest colour followed by orange than greens n blues but opal varies in different shades n patterns also making this one of the most unique gems in the world.Black opals are ideal for ring stones a smost are cabochon and good fire colours.
Source your black opal ring direct from opal wholesalers and dealers set in 18 k or 9k and 10k gold.