DIAMOND AND ENAMEL RING set with alternating round cut

A DIAMOND RING in platinum, set with alternating round cut and princess cut diamonds, full British hallmarks, size P / 7.5, 9.0g.

RUBY AND DIAMOND HALF ETERNITY RING set with alternating round cut rubies and diamonds, size L / 5.5, 2.0g.

AN ANTIQUE RUBY AND DIAMOND RING in yellow gold, set with alternating round cut rubies and old cut diamonds, no assay marks, size S / 9.25, 3.3g.

NO RESERVE - A RUBY AND DIAMOND RING in platinum, set with a row of alternating round cut rubies and round brilliant cut diamonds, the diamonds all totalling 0.7-0.8 carats, stamped Pt900, size M1/2 /

Tiffany & Co. Pink sapphire and diamond ring Set with alternating circular-cut pink sapphires and round brilliant-cut diamonds Platinum Signed Tiffany & Co. Ring size 3 ½; Gross weight 1.9

AN ANTIQUE VICTORIAN SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with set with alternating round cut sapphires and old cut diamonds, British hallmarks for 18ct gold, size M / 6, 3.7g.

18K GOLD AND DIAMOND FILLIGREE CLUSTER RING - 18k white gold and diamond filigree ring set with 14 diamonds; center stone round brilliant cut .5ct; 2 alternating round cut stones .25 each; 11 surround

NO RESERVE - AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a row of alternating round cut sapphire and rose cut diamonds, full British hallmarks for 1902, size N1/2 / 7, 2.5g.&nbs

A diamond and sapphire ring the yellow metal mount channel-set with alternating round-cut stones, the shank stamped 750, size K, 3 grams.

AN ANTIQUE RUBY AND DIAMOND HORSESHOE RING in 18ct yellow gold, designed as a horseshoe set with alternating round cut rubies and old cut diamonds, inscribed 'W.G.&A.A. 1/1/07', full British hallm

Men's 14kt yellow gold diamond and enamel ring featuring square design, accented with black enamel, satin finish and a prong set round brilliant cut diamond weighing approx. 0.03ct. Finger size 8. Wei

Lady's 18k white gold Roberto Coin blue enamel and diamond ring consisting of 25 pave-set round brilliant cut diamonds with a total weight of 0.25cts, graded F color, SI1 clarity. Finger size 6 3/4. G

Mavito Fine Jewelry Rubellite, diamond, and enamel ring Set with a cabochon rubellite weighing approx. 2.27 cts, enhanced by round brilliant-cut diamonds, with red and black enamel shoulders 18k yello

NO RESERVE - A SAPPHIRE, DIAMOND AND PEARL HORSESHOE RING in yellow gold, the horseshoe set with alternating round cut sapphires and old cut diamonds and a pearl, no assay marks, size H / 3, 2.8g.

DAVID WEBB: A DIAMOND AND ENAMEL RING Of freeform design set with round brilliant-cut diamonds and accented with black enamel; signed WEBB; estimated total diamond weight 2.00 carats; mounted in 18k

A DIAMOND AND ENAMEL CAT RING in yellow gold, designed as the head of a cat decorated with black, grey, brown, white and red enamel, the eyes set with round cut diamonds, no assay marks, size N / 6.75

A La Nouvelle Bague 18K yellow and white gold triple row domed ring. One row is yellow gold with a dark blue enamel dot. The middle row is white gold and bead set with 35 round brilliant cut diamonds,

A DIAMOND AND BLACK ENAMEL RING in 9ct yellow gold, set with a central round brilliant cut diamond in a surround of black enamel to a frame of further round brilliant cut diamonds, partial British hal

AN ENAMEL AND DIAMOND RING, channel-set with two bands of round brilliant-cut diamonds spaced by a band of black enamel. Estimated total diamond weight 0.25ct, hallmarked Birmingham, ring size Q, 10.0

AN AQUAMARINE AND DIAMOND HALF ETERNITY RING in 9ct yellow gold, set with a row of alternating round cut aquamarines and single cut diamonds, partial British hallmarks, size O / 7.25, 1.8g. 

RUBY AND DIAMOND RING in 18ct yellow gold, set with three cushion cut rubies and alternating round cut diamonds, stamped 18CT, size N / 6.5, 1.9g.

A FRENCH DIAMOND AND ENAMEL BOMBE RING in 18ct yellow gold, the domed face set with round brilliant cut diamonds with black enamel details, the diamonds totalling 0.9-1.1 carats, French assay marks, s

A VINTAGE EMERALD AND DIAMOND RING in 18ct yellow gold, the elliptical face set with a row of alternating round cut emeralds and round brilliant cut diamonds, British hallmarks for London, 1972, size

A three stone diamond and enamel half hoop gypsy set ring, the slightly graduated round brilliant cut diamonds to tapering blue guilloche enamel band, stamped '18ct' , size P, 10.7 grams