A single stone diamond ring set in platinum,

A LOVELY SINGLE STONE DIAMOND RING, 1.65CTS, set in platinum.

DIAMOND SINGLE-STONE RING Set with a cushion-shaped diamond, between bifurcated brilliant-cut diamond-set shoulders, mounted in platinum, maker's mark, London hallmark, ring size approx. O Footnotes:

DE BEERS: DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, weighing 1.26 carats, mounted in platinum, signed De Beers, numbered C93092, partial UK hallmark, ring size approx. I½, maker

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond weighing 1.50 carats, mounted in platinum, maker's mark DOM, European convention mark, partial UK hallmark, ring size approx. O Footnotes: Ac

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, mounted in platinum, diamond approx. 1.00ct, London hallmark, ring size approx. H½ For further information on this lot please visit Bo

A diamond single-stone ring claw-set with a round brilliant-cut diamond, to a plain band, mounted in platinum; together with a baguette and round brilliant-cut diamond half-eternity ring, mounted in p

A diamond single-stone ring claw-set with a cut-cornered square modified brilliant-cut diamond, to a plain band, mounted in platinum; with GIA later inscription number 6107374369, stating that the dia

A platinum and 18ct gold diamond five-stone ring, together with a 9ct gold diamond single-stone ring. The first set with single-cut diamonds, the second set with a brilliant-cut diamond. Estimated tot

A DIAMOND SINGLE-STONE RING, BY BULGARI The central brilliant-cut diamond weighing 0.79ct within a four-claw setting, to a gallery pavé-set with similarly-cut diamonds, mounted in platinum, signe

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

PLATINUM AND DIAMOND ENGAGEMENT RING SET WITH 0.65CT ROUND FULL-CUT DIAMOND AND (4) SINGLE-CUT SIDE STONES; COLOR: FACES UP WHITE; CLARITY: EYE CLEAN. RING SIZE 8; GROSS WEIGHT 4.8 GRAMS

Five gold gem-set rings. To include an early 20th century platinum and 18ct gold single-cut diamond three-stone crossover ring, an early 20th century 18ct gold and platinum synthetic ruby dress ring,

Vintage ladies' stunning platinum estate ring set to the center with a large rectangular cut aquamarine stone, embellished with a single rectangular cut diamond on each shank. Ring size 6-1/2. Weighs

Ladies vintage platinum diamond ring featuring two prong set round European cut diamonds and accented with additional round single cut diamonds. Total diamond weight approx. 1.00ct. Detailed with an e

PLATINUM DIAMOND RING ~ SIZE 6.75, ART DECO STYLE DESIGN SET WITH A EUROPEAN CUT DIAMOND CENTER STONE (1.37CT TW) AND SURROUNDED BY FOUR SINGLE CUT DIAMONDS ON EACH SIDE OF THE BAND (APPROX 1.45CT TDW

Set with single cut diamond; approximately .50ot. 1.5 DWT. Sold as is; missing two stones.

A SET OF TWO THREE STONE RINGS one in 18ct yellow gold and platinum, set with a square step cut ruby accented by two single cut diamonds, stamped 18ct & PT, size O1/2 / 7.5, 2.2g, one in 9ct yello

A single stone diamond ring, claw set round brilliant cut diamond, approximate diameter 4.8mm, estimated approximate weight 0.40ct, tapered chenier shoulders, size I½, unmarked, tested as 18ct

18ct yellow gold 3 stone diamond ring set in platinum. Size P, weight 2.5g.

A single stone diamond ring, featuring a claw set round brilliant cut diamond measuring 4.17mm in a yellow metal collet on a yellow metal band stamped '585', ring size K1/2, total weight of item 2.4g

DIAMOND SINGLE-STONE RING Set with an old brilliant-cut diamond, within a surround and shoulders set with cushion and single-cut diamonds, principal diamond approx. 1.35cts, ring size approx. L½

A 1940s diamond single-stone ring set with a square French-cut diamond, each shoulder set with two French-cut diamonds, to a plain shank, stamped PLAT(Ring size: K)

A diamond single-stone ring set with a round brilliant-cut diamond, mounted in 18ct gold(Ring size: K)

DIAMOND SINGLE-STONE RING Set with a step-cut diamond, weighing 7.01 carats, between brilliant-cut diamond shoulders, ring size approx. G (sizing spring)