Two opal rings, one comprises an oval precious opal with dark body colour, approximately measuring 17.4 x 12.9 mm, collet set on a yellow metal mount with engravings on the shoulders, to a D-profile shank, unmarked, ring size S; another consists of an oval black opal with dark blue body colour, with play-of-colour mostly ranging from green to blue, approximately measuring 11.0 x 7.3 mm, gyspy set on a 9ct yellow gold mount, to a tapered plain D-profile shank, Birmingham hallmarked as 375, ring size R. Total weight of items 17.0 grams (2).