An 18ct gold boulder opal pendant. The 18ct gold

A 18ct yellow gold Australian Opal Pyramid profile pendant. Featuring 4 oval cabochon Australian Opals with strong play of Yellow/Blue/Green/Violet colors. Measures at 22mm in length by 16mm width and

A BOULDER OPAL AND PINK SAPPHIRE BROOCH / NECKLACE in 18ct gold, set with a central polished boulder opal of 39.0mm in a border of round cut pink sapphires, on a black cord necklace, clasp stamped 750

A BLACK OPAL AND DIAMOND PENDANT AND CHAIN in 18ct yellow gold, the pendant set with a pear shaped cabochon black opal in a border of round brilliant cut diamonds, accented by a further round brillian

An opal pendant. The tapered rectangular opal cabochon, with tapered surmount, suspended from an 18ct gold trace-link chain. AF. Chain with hallmarks for Sheffield. Length of pendant 2.9cms. Length of

A collection of gem-set jewellery to include a large 9ct gold mother-of-pearl and onyx set pendant, to a belcher link chain; a 9ct gold amethyst and diamond set ring, and 18ct gold opal and diamond se

* An 18ct gold emerald and diamond pendant. The oval opal emerald, within a brilliant-cut diamond swag surmount, to the brilliant-cut diamond hoop and belcher-link chain. Total diamond 0.56ct, stamped

A FINE OPAL AND DIAMOND PENDANT NECKLACE in 18ct white gold, set with a cabochon opal of 9.40 carats accented by round cut diamonds, stamped Au750, pendant 3.7cm, chain 45.0cm, 5.4g.

A BLACK OPAL AND DIAMOND PENDANT in 18ct yellow gold, set with a cabochon black opal of 3.40 carats, the bail accented by three round cut diamonds, stamped 18K, 2.2cm, 1.4g.

Karl-Heinz Reister, 18ct yellow gold, brilliant, opal, pearl. 92 gram. L. 24 cm. Pendant: D. c. 8 cm. Marked: Artist's signet, 71 (engraved).

AN OPAL AND DIAMOND PENDANT NECKLACE in 18ct white gold, set with a pear shaped cabochon opal in a border of round brilliant cut diamonds, suspended from a chain, full British hallmarks, pendant 2.3cm

AN OPAL AND DIAMOND PENDANT AND CHAIN, ASPREY & CO in 18ct white gold, set with an elongated oval cabochon opal of 4.85 carats, suspended below four graduated chevron motifs set with round cut diamond

Victor Mayer, Faberge 18ct gold pendant locket with diamond set red enamel decoration in original box

An 18ct gold pendant / charm formed as two cherubs / angels. Approx. 1" long

An 18ct gold pendant / charm formed as two cherubs / angels. Approx. 1" long

A Continental 18ct gold pendant with set with diamonds and enamel flower detail. Approx. 1 1/4" long

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 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.

An 18ct gold opal cabochon and amethyst hinged bangle, with openwork reverse, inner diameter 5.7cm, 12.2g

A late Victorian 18ct gold opal five-stone ring. The graduated oval opal cabochon line, with rose-cut diamond spacers. Hallmarks for Birmingham, 1896. Ring size O1/2. Weight 4.4gms.

An 18ct gold opal and diamond necklace.Estimated diamond weight 0.15ct, H-I colour, SI clarity. Hallmarks for Birmingham. Length 42.5cms. 6gms.

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

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

An 18ct gold opal ring, four brooches and an Omega watch. To include an Edwardian 18ct gold graduated opal five-stone ring, an Edwardian 9ct gold amethyst and split pearl bar brooch, together with a 9