(10073) An 18ct gold fire opal and diamond cluster

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

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 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.

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

An 18ct gold opal and diamond novelty brooch, and an 18ct gold gem-set cluster ring. The brooch designed as a pair of sunglasses with oval opal cabochon lenses and brilliant-cut diamond bridge, the ri

A collection of gem-set jewellery to include a pair of 18ct gold emerald and diamond set cluster earrings, a pair of opal and diamond cluster earrings, unmarked; two more pairs of opal earrings, unmar

AN ANTIQUE FIRE OPAL AND DIAMOND RING in 18ct yellow gold and silver, set with a cushion cut fire opal of 1.72 carats, within a border of single cut diamonds, stamped 18, size M / 6.25, 3.2g.

An opal and diamond-set cluster ring, in 18ct yellow gold, size J1/2, together with a 9ct yellow gold engine-turned toothpick; 8.8 grams

A FIRE OPAL AND DIAMOND RING in 9ct white gold, with three fire opals each surrounded by a cluster of diamonds, the opals estimated to weigh 0.6-0.7 carats, full British hallmarks, size T / 9.5, 2.5g.

A PAIR OF OPAL AND RUBY DROP EARRINGS in 18ct gold, each comprising an cabochon opal in a cluster of round brilliant cut diamonds suspending a step cut ruby and further opal and diamond cluster, stamp

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 OPAL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cabochon opal of 9.50 carats in a border of round brilliant cut diamonds, the band accented by further diamonds all totalling 0.65 carat

AN OPAL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cabochon opal in a cluster of round cut diamonds, British hallmarks, size H / 4, 5.2g.

A PAIR OF OPAL AND DIAMOND CLUSTER EARRINGS in 18ct white gold, each set with a cabochon opal in a cluster of round brilliant cut diamonds, suspending a further opal and diamond cluster, stamped 750,

AN OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cabochon opal in a cluster of rose cut diamonds, French import mark, size O / 7, 3.9g.

AN ANTIQUE OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a cabochon opal in a cluster of rose cut diamonds, stamped 18CT & PLATINUM, size M / 6.25, 2.7g. 

Two 18ct gold diamond and gem-set rings. To include an oval opal cabochon single-stone ring with brilliant-cut diamond stepped sides, together with a ruby and diamond cluster ring. Estimated total dia

AN OPAL AND DIAMOND RING in 18ct yellow gold, set with a round cut diamond within a cluster of four cabochon opals, no assay marks, size N / 6.5, 5.4g.

Four diamond and gem-set rings. To include an Edwardian 18ct gold turquoise five-stone and diamond ring, a 9ct gold opal and sapphire cluster ring, together with two further gem-set rings. One with ha

Four gold diamond and gem-set rings. To include an 18ct gold diamond and garnet-topped-doublet three-stone ring, a 9ct gold opal cluster ring, together with two further 9ct gold rings. Estimated total

An 18ct gold diamond cluster ring. Of floral design, the brilliant-cut diamond cluster, to the tapered shoulders. Estimated total diamond weight 3cts, I-J colour, SI2-P2 clarity. Hallmarks for London,

A mid 20th century 18ct gold diamond cluster ring. The old-cut diamond, within a single-cut diamond surround, to the plain band. Principal diamond estimated weight 0.75ct, tinted colour, SI clarity. R

A mid 20th century 18ct gold diamond cluster ring. The old-cut diamond cluster, to the tapered shoulders and plain band. Estimated total diamond weight 1ct. Principal diamond estimated I-J colour, SI

Modern 14k yellow gold, fire opal, and diamond ring, featuring a 5.81ct orange cabochon fire opal set into a tapering custom cast mount containing (72) round brilliant cut diamonds (SI-1 clarity, J-K