A 4.02 CARAT DIAMOND RING in platinum, set with a round brilliant cut diamond of 4.02 carats in a

A 1.00 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 1.00 carats, accented by further round brilliant cut diamonds to the band, British hallmarks for p

A 1.01 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in platinum, set with a round brilliant cut diamond of 1.01 carats, the band half set with further round brilliant cut diamonds, partial British hallmark

14k gold & diamond ring. Marked 14k, platinum top set with round brilliant cut diamond approximately .20 carat and accented by six .02 carat each small channel set diamonds to each side. Clarity SI2,

DESCRIPTION: Platinum ring set with center round brilliant cut diamond, .87 carat (Clarity SI1, Color F-G). Two round brilliant cut side diamonds, .38 carat and .39 carat (Clarity SI1, Color G-H). MEA

Diamond, Platinum Ring Set Stones: Round brilliant-cut diamond weighing 2.44 carats; baguette-cut diamonds weighing a total of approximately 0.70 carat Metal: Plat

DESCRIPTION: 14K 4.5 CTW Diamond Waterfall Ring. 14k stamped ring, platinum top set with fifteen round brilliant cut diamonds. Each diamond approximately .30 carat (by formula), Clarity SI1-SI2, Color

AN EMERALD AND DIAMOND RING in platinum, set with an octagonal cut emerald of 8.02 carats, the band accented by baguette and round brilliant cut diamonds totalling 0.51 carats, stamped Pt950, size O /

A FANCY COLOURED DIAMOND RING in platinum, set with fancy brown, pink, yellow and white coloured round brilliant cut diamonds totalling 2.49 carats, stamped PLAT 950, size N / 6, 8.2g.

Marked 14k yellow gold setting with platinum top. Set with nine round brilliant cut diamonds, center .25 carat, two .15 carat, and six .05 each carat. Approximately .85 CTW. Clarity Si2-I2. Color G-H.

NO RESERVE - A DIAMOND TOI ET MOI RING in platinum, set with two round brilliant cut diamonds, both totalling 0.35-0.40 carats, full British hallmarks, size N / 6.5, 5.2g.

NO RESERVE - A DIAMOND TOI ET MOI RING in platinum, set with two round brilliant cut diamonds, both totalling 0.35-0.40 carats, full British hallmarks, size N / 6.5, 5.2g.

A SAPPHIRE AND DIAMOND RING in platinum, set with an oval cut sapphire of 5.75 carats, in a border of round brilliant and baguette cut diamonds totalling 1.96 carats, stamped Pt900, size M / 6, 14.0g.

centered with one half bezel set round brilliant cut diamond weighing 1.17 carat (actual) (G color, SI1 clarity) in a platinum mount, signed Tiffany & Co. / PT 950. Ring size 4.5 11.6 dwt. Accompanied

DESCRIPTION: Vintage platinum (tested) engagement ring set with center round brilliant cut diamond, approximately 1 carat (by formula). Clarity SI1, Color G-H. Accented by two tapered baguette diamond

DESCRIPTION: Vintage platinum (tested) engagement ring set with center round brilliant cut diamond, approximately 1 carat (by formula). Clarity SI1, Color G-H. Accented by two tapered baguette diamond

A DIAMOND THREE STONE RING in platinum, set with a central oval cut diamond of 0.85 carats between two round brilliant cut diamonds totalling 0.25 carats, British hallmark for platinum, size M1/2 / 6.

Vintage Art Deco style platinum diamond cocktail ring, set with round brilliant and baguette-cut diamonds; approx: 1.50 carats total weight; color: H-I, clarity: VS - SI1. Marked: "PLAT". Ring measure

Marked 14k yellow gold ring, platinum prong top set with approximately .45 carat round brilliant cut diamond. Clarity SI1, Color H-I. 3.8 grams. Size 7-3/4.

Marked 14k yellow gold ring, platinum prong top set with approximately .45 carat round brilliant cut diamond. Clarity SI1, Color H-I. 3.8 grams. Size 7-3/4.

A TANZANITE AND DIAMOND CLUSTER RING in platinum, set with an emerald cut tanzanite of 2.85 carats, in a border of round brilliant cut diamonds totalling 1.0-1.2 carats, stamped 950, size M / 6, 8.2g.

A DIAMOND THREE STONE RING in 18ct yellow gold and platinum, set with three round brilliant cut diamonds totalling 0.9-1.0 carats, stamped 18CT PLATINUM, size N1/2 / 7, 3.9g.

AN UNHEATED RUBY AND DIAMOND RING in platinum, set with a cushion cut ruby of 2.54 carats accented by round brilliant and baguette cut diamonds, with further round brilliant cut diamonds to the band,

CARTIER, A STAR RUBY AND DIAMOND RING in platinum, set with a cabochon star ruby of approximately 76.03 carats in a border of round brilliant cut diamonds, signed Cartier and numbered, stamped Pt, siz

View a video of this lot: Click HereCrafted in platinum; set with a round brilliant cut diamond, weighing approximately 2.65 carats, with J-K color and SI1-SI2 clarity; rectangular fa