A GOOD 18CT GOLD TIER DROP OPAL AND DIAMOND RING.

An Edwardian 18ct gold opal and diamond ring. The oval-shape opal line, with old-cut diamond spacers and scrolling gallery. Estimated total diamond weight 0.15ct. Hallmarks for London, 1903. Ring size

An early 20th century 18ct gold opal and diamond ring. The graduated oval opal cabochon line, with old-cut diamond line spacers and tapered shoulders. Hallmarks for Birmingham. Ring size Q1/2. Weight

An 18ct gold opal and diamond ring. The pear-shape fire opal, to the brilliant-cut diamond line sides and plain band. Hallmarks for Birmingham. Weight 4.5gms.

An early 20th century 18ct gold opal and diamond ring. The oval opal cabochon, to the single-cut diamond and circular opal cabochon sides. Weight 3.2gms.

An 18ct gold opal and diamond cluster ring. The oval opal cabochon, within a single-cut diamond surround, to the tapered band. Estimated total diamond weight 0.35ct. Hallmarks for London, 1978. Ring s

18ct Gold opal and diamond set ring

18ct Gold opal and diamond set ring

An 18ct gold opal and diamond three-stone ring. The oval opal cabochon line, with single-cut diamond double spacers, to the scrolling sides and plain band. Hallmarks for London, 1961. Weight 4.9gms.

Three gold gem-set rings. To include an early 20th century 18ct gold opal and diamond dress ring, a 9ct gold garnet band ring, together with one further ring. One AF. Hallmarks for gold, one partially

18ct gold hallmarked black opal & diamond cluster ring: Outstanding ring supplied by Boodles, ring size T, 24 small but high grade diamonds. Opal measures 16mm x 11mm.

An 18ct gold fire opal and diamond dress ring. The oval-shape fire opal, with pave-set diamond shoulders. Estimated dimensions of fire opal 18 by 13 by 9mms. Hallmarks for Birmingham, 2011. Ring size

A GOOD 18CT GOLD AND DIAMOND SET DRESS RING.

18ct gold three stone opal and diamond ring, size K, 4.1g.

An Edwardian 18ct gold opal and diamond seven-stone ring. The graduated oval opal cabochon line, with single-cut diamond line spacers. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham,

An early 20th century 18ct gold opal and diamond three-stone ring. The graduated oval opal cabochon line, with old-cut diamond double spacers. Estimated total diamond weight 0.10ct. Ring size L1/2. We

18ct Yellow gold opal and diamond flower head ring

A GOOD 18CT WHITE GOLD, DIAMOND AND BAGUETTE DIAMOND RING.

A mid 20th century 18ct gold and platinum, opal and diamond cluster ring. The opal cabochon, within a single-cut diamond surround. Estimated total diamond weight 0.10ct. Ring size O. Weight 2.6gms. Ov

Having a central teardrop opal (approx. 18x12mm) centered by 0.05ct melee diamonds in a 14k white gold setting; size 5-1/2, 7.8g

A GOOD LARGE ANTIQUE 18CT YELLOW GOLD AND DIAMOND THREE STONE RING. Central stone 0.7 mm x 0.7 mm.

An Edwardian 18ct gold opal three-stone ring, with old-cut diamond spacers. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham, 1903, partially indistinct. Ring size N. 3.8gms.

375 (9ct Gold) Yellow Gold Opal 6 x 12mm Ring w 2 Small Diamonds & Earrings opal is 4 x 7mm. This is a nice set of jewelry, they are in good condition, the first is a beautiful opal ring, it has two s

This 14K rose gold EFFY ring has a center round opal (approx 6 mm) with a halo of round diamonds. Approx size 7 and weighs approx 1.5 dwt. Marked "EFFY" on ring interior. Good condition. See photos.

An 18ct gold ring set with an opal cabochon flanked by diamonds. Ring size approx. Q