Description A black opal and sapphire dress ring. A black opal and sapphire dress ring, the oval cabochon cut opal 13mm x 8mm collet set and surrounded by sixteen claw set brilliant cut sapphires in an 18 carat all yellow gold oval cluster mount, 21.5m x 16.5mm, hallmarked London 1988, gross weight approximately 8.5gms.ring size Q.