A mid 20th century platinum brilliant-cut diamond

A mid 20th century platinum diamond dress ring. The brilliant-cut diamond, with similarly-cut diamond tapered cylindrical sides. Estimated total diamond weight 1.50cts, principal diamond estimated I-J

A mid 20th century platinum diamond three-stone ring. The graduated brilliant-cut diamond line, with single-cut diamond line sides, to the plain band. Estimated total diamond weight 0.55ct, I-J colour

A mid 20th century platinum diamond half-circle eternity ring. Designed as a series of ten brilliant-cut diamonds, to the engraved half-band. Estimated total diamond weight 0.70ct. Ring size M1/2. Wei

A mid 20th century platinum and 18ct gold diamond three-stone ring. The graduated brilliant-cut diamond line, to the single-cut diamond asymmetric sides and plain band. Estimated total diamond weight

A mid 20th century platinum and 18ct gold diamond and paste three-stone ring. The graduated brilliant-cut diamonds and replacement colourless paste, to the asymmetric sides and plain band. One replace

A mid 20th century 18ct gold and platinum diamond single-stone ring. The brilliant-cut diamond collet, to the tapered shoulders and plain band. Estimated diamond weight 0.45ct, J-K colour, P1. Weight

A mid 20th century 18ct gold and platinum diamond three-stone ring. The graduated brilliant-cut diamonds, each within an illusion setting, to the tapered shoulders and plain band. Estimated total diam

A mid 20th century 18ct gold and platinum diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, with tapered shoulders and single-cut diamond accents. Principal diamond estimated

Two mid 20th century 18ct gold and platinum diamond three-stone rings. Each designed as three brilliant-cut diamonds, to the plain band. Estimated total diamond weight 0.45ct. Weight 5gms. Overall con

Likely Mid 20th Century. Art Deco style, American. A square cut natural green emerald (approximately .75 CT) flanked by two round brilliant cut diamonds (each approx .3 CT) surrounded by sixteen round

A mid 20th century platinum old-cut diamond brooch, with baguette-cut diamond accents. Estimated total diamond weight 4cts.French re-strike marks. Length 3.2cms. 11.7gms.

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.

An early to mid 20th century platinum and 18ct gold old-cut diamond floral dress ring.Estimated total diamond weight 1.20cts, H-I colour, SI1-P1 clarity.Ring size O1/2. 3.3gms.

A mid 20th century diamond flower brooch. The brilliant-cut diamond cluster, within a textured petal surround, to the partially textured overlapped leaves. Estimated total diamond weight 0.30ct. Frenc

A mid 20th century platinum diamond cluster ring. The old-cut diamond cluster, with pierced gallery and plain band. Estimated total diamond weight 1ct, I-J colour, SI clarity. French assay marks. Ring

DIAMOND DOUBLE-CLIP BROOCH, MID 20TH CENTURY Old brilliant, brilliant, single and tapered-baguette-cut diamonds, approx. 2.50cts total Length 3.9cm Weight approx. 19.0g Footnotes: OVERALL CONDITION Li

Three mid 20th century gold diamond rings. To include a brilliant-cut diamond crossover ring, a diamond five-stone ring, and a circular-cut diamond crossover ring. Estimated total diamond weight 0.55c

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

DIAMOND TRIPLE-CLIP BROOCH/NECKLACE, MID 20TH CENTURY Of asymmetrical scroll design, pavé-set throughout with brilliant and old brilliant-cut diamonds, accented by baguette-cut diamonds, on a det

RUBY AND DIAMOND BRACELET, MID 20TH CENTURY Composed of ten cushion-shaped ruby and brilliant-cut diamond clusters, alternating with quatrefoils of marquise-cut diamonds, diamonds approximately 8.00

RUBY AND DIAMOND CLUSTER RING, MID 20TH CENTURY The oval-cut ruby, weighing 2.51 carats, within a surround of brilliant-cut diamonds, between baguette-cut diamond-set shoulders, ring size N Footnotes:

PAIR OF DIAMOND AND SAPPHIRE TARGET CLUSTER EARRINGS, MID 20TH CENTURY The old brilliant-cut diamonds in rubover settings, within a surround of calibré-cut sapphires, diamonds approximately 1.40

CORTEBERT - a lady's mid 20th century gold diamond manual wind cocktail watch. The brilliant-cut diamond openwork front, opening to reveal a circular-shape cream dial, to the brilliant and single-cut

GAZDAR: RUBY AND DIAMOND EARRINGS, MID 20TH CENTURY Each designed as the head of a parasol, with spokes of calibré-cut rubies and pairs of brilliant-cut diamonds, signed Gazdar, diameter 2.0cm Fo