Ring, beginning of 20th century platinum 0,950, 0,880

Edwardian ring (from beginning of 20th century) made of 18K Yellow Gold (acid tested by the auction house) set in its center with a lovely Cushion Cut Sapphire weighing approximately 0.65 Carats and w

An early 20th century platinum and gold, old and rose-cut diamond ring.Estimated total diamond weight 0.75ct. Ring size P. 5.3gms.

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

Hugo Stromhdahl platinum, diamond & ruby ring, 20th c., Made in Sweden, wide band centered by cabochon ruby, 10.66 x 9.0mm, opaque dark color within pave-set diamond surround, est. 5.0 carats, I-J col

An early 20th century European platinum engagement ring set with old mine brilliant cut diamonds with a 0.9ct center. Hallmarked and cast in 90% platinum. Fine Fashionable Natural Precious Stones Jewe

A SOLITAIRE DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond of 0.51 carats within a tapering band, stamped 18ct Plat, size K / 5.25, 2.4g.

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

An early 20th century platinum old-cut diamond two-stone crossover ring, with asymmetric shoulders, estimated total diamond weight 0.55ct, H-J colour, SI2-P1 clarity, band stamped PLAT, ring size N, 2

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

VINTAGE PLATINUM AND DIAMOND RING Mid- to Late 20th Century Central approx. 0.65 ct. round-cut diamond, approx. I1 clarity, K-L color, surrounded by 22 single-cut diamonds, approx. 0.22 ctw., and eigh

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, 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

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

Antique platinum and diamond filigree ring with approximately .42 tcw., size 5 1/2, stamped platinum, weighs 3.2 grams/2.0 dwt., early 20th C

Platinum, diamond and jadeite jewelry suite, 20th c., bracelet with oval flat mottled-green disc, joined by circular cut diamond set chain, est. 1.0 carats, ring with (2) jadeite jade stones accented

Central OEC diamond, .72 ct. by formula, framed by diamond halo in platinum head, surrounding diamonds, approx. .70 ct. TW, on yellow gold hoop. Early 20th c. Unmarked. At least 14k yg. Size 6. 2.0 dw

Set in platinum. From the first half of the 20th century, with a central sapphire surrounded by small sapphires and diamonds, unmarked. Dimensions: The central stone is approximately 0.75 carats, the

20th century. Total weight 0.18 ct. Total weight 7.15 g. (0.252 oz.) Ring size 5 1/2

ANTIQUE TURQUOISE AND DIAMOND RING, EARLY 20TH CENTURY claw-set with a cabochon turquoise, within a border of cushion-shaped diamonds, size Q / 8, unmarked, estimated total diamond weight 0.60-0.80 ca