A mid 20th century 18ct gold opal and diamond cluster

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

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

A mid 20th century 18ct gold diamond cluster ring. The old-cut diamond, within a single-cut diamond scalloped surround. Estimated total diamond weight 0.40ct, principal diamond estimated I-J colour, S

A mid 20th century 18ct gold diamond cluster ring. The brilliant-cut diamond, within a similarly-cut diamond surround, to the openwork gallery and plain band. Estimated total diamond weight 0.25ct. We

A mid 20th century 18ct gold topaz and diamond cluster ring. The circular-shape blue topaz, within a single-cut diamond surround, to the tapered shoulders and plain band. Ring size Q. Weight 4.1gms. O

A mid 20th century 18ct gold sapphire and diamond cluster ring. The oval-shape sapphire, within an old-cut diamond border, to the trifurcated shoulders and plain band. Estimated total diamond weight 1

A mid 20th century 18ct gold sapphire and diamond cluster ring. The oval-shape sapphire, within a brilliant-cut diamond surround, to the tapered shoulders and plain band. Estimated total diamond weigh

A mid 20th century 18ct gold sapphire and diamond cluster ring. The oval-shape sapphire, within an old-cut diamond, illusion-set surround. Estimated total diamond weight 0.30ct. Weight 5.7gms.

A mid 20th century platinum and 18ct gold diamond cluster ring. The single-cut diamond floral cluster, with single-cut diamond sides, to the plain band. Estimated total diamond weight 0.15ct. Weight 2

A mid 20th century 18ct gold sapphire and diamond cluster ring. The oval-shape sapphire, within a brilliant-cut diamond surround, to the tapered shoulders and plain band. Estimated total diamond weigh

Two mid 20th century 18ct gold diamond and sapphire cluster rings. The first designed as an oval-shape sapphire within a single-cut diamond surround, the second designed as a single-cut diamond floral

A mid 20th century 18ct gold sapphire and diamond cluster ring. The circular-shape sapphire collet and old-cut diamond cluster with tapered band. Estimated total diamond weight 0.25ct. Ring size K1/2.

A mid 20th century 18ct gold sapphire and diamond cluster ring. The circular-shape sapphire, within a single-cut diamond border. Estimated total diamond weight 0.10ct. Weight 4.2gms.

A mid 20th century 18ct gold amethyst and brilliant-cut diamond cluster ring.Estimated total diamond weight 0.50ct, G-H colour, VS-SI clarity.Stamped 18ct. Ring size J. 3.8gms.

A mid 20th century 18ct gold ruby and diamond floral cluster ring. The circular-shape ruby collet, within a old-cut diamond and circular-shape ruby scalloped surround, to the textured shoulders and pl

Two early to mid 20th century 18ct gold diamond and sapphire floral cluster rings. The first designed as a single-cut diamond scalloped cluster with textured sides, the second designed as a circular-s

A mid 20th century 18ct gold and platinum ruby and diamond cluster ring. The circular-shape ruby, with single-cut diamond surround and tapered shoulders. Estimated total diamond weight 0.15ct. Stamped

Two diamond and gem-set cluster rings. To include a mid 20th century 18ct gold sapphire, diamond and colourless paste cluster ring, together with a 9ct gold aquamarine and diamond cluster ring. Estima

A mid 20th century sapphire and diamond cluster ring. The rectangular-shape sapphire, within an old-cut diamond surround, to the grooved shoulders and plain band. Estimated total diamond weight 0.35ct

Two mid 20th century 18ct gold diamond and gem-set rings. To include a circular-shape sapphire and single-cut diamond cluster ring, together with a graduated rose-cut diamond three-stone crossover rin

Two late 19th and mid 20th century 18ct gold diamond and gem rings. To include a late 19th century graduated opal cabochon three-stone ring with diamond point double spacers, together with a similarly

A mid 20th century 18ct gold diamond five-stone ring. The old-cut diamond, within an illusion setting, to the similarly-cut diamond sides, old-cut diamond shoulders and tapered band. Estimated total d

An early 20th century 18ct gold diamond cluster ring. The old-cut diamond collet, within a similarly-cut diamond and curved bar halo, to the old-cut diamond sides. Estimated total diamond weight 0.50c