A mid 20th century platinum emerald and diamond ring.

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 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

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 five-stone ring. The graduated old-cut diamond line, to the ridged shoulders and plain band. Estimated total diamond weight 0.65ct, I-J colour, SI1-P1 clarity. Weig

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, sapphire and diamond cluster ring. The rectangular-shape sapphire, within a circular-cut diamond scalloped surround, to the openwork gallery. Estimated total diamond weigh

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 gold and platinum diamond cluster ring. The circular-cut diamonds, to the tapered band. Estimated total diamond weight 0.35ct. Weight 2.5gms.

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

METAL: Platinum/18k Gold. GEMSTONES: Old mine cut diamonds approx. 0.46-0.50ctw. Emerald (stone is chipped). MEASUREMENTS: Ring size 7, ring top is 7.3mm at widest point. TESTED: Plat/18k. WEIGHT: 5.3

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 single-stone ring. Of bi-colour design, the brilliant-cut diamond, with tapered shoulders and single-cut diamond accents. Principal diamond estimated

A mid 20th century platinum and 18ct gold diamond single-stone ring. The circular-cut diamond, with pave-set diamond line sides. Principal diamond estimated weight 0.30ct, I-J colour, P1 clarity. Ring

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 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 platinum and 18ct gold diamond three-stone ring. The slightly graduated circular-cut diamonds, to the tapered band. Estimated total diamond weight 0.35ct, I-J colour, SI clarity. Ri

A mid 20th century 18ct gold and platinum five stone diamond ring size M.

A mid 20th century 9ct gold and platinum diamond three-stone ring. The graduated brilliant-cut diamonds, within a lozenge-shape surround, to the detailed shoulders and plain band. Estimated total diam

Two mid 20th century 18ct gold and platinum, diamond and sapphire rings. The first designed as a circular-shape sapphire with single-cut diamond surround, the second designed as a circular-cut diamond

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

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 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

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 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