A single stone diamond ring, stone weighs approx. 1.3c,

METAL: platinum, 18K rose gold GEMSTONE(S): round brilliant and single cut diamonds approx. 1.49 carats total, most K-M/SI (biggest stone weighs approx. 0.60 carat); square and triangular faceted sapp

Ladies' deco era 14 karat white gold ring, set with four stunning aquamarine stones and a single round brilliant cut diamond to the center. Ring size 5-1/4. Weighs approx. 1.7 dwt (2.6 grams). Shippin

Solid 18k Yellow Gold diamond ring, center stone weighs approx 0.35ct., total of approx 0.50tcw., VS1 H color., 5.8g

Solid 18k Yellow Gold diamond ring, center stone weighs approx 0.35ct., total of approx 0.50tcw., VS1 H color., 5.8g

Very nice ring. 14k white gold set with 1 oval blue stone in center surrounded by diamonds. Marked LeVian and 14k, ring is an 8 3/4 and weighs approx 7.98g

Two 18ct gold & platinum diamond rings: Gross weight 4.1g. Single stone approx. 20 points or 1/5th carat with diamond chip shoulders, ring size O. The 3 stone size K largest stone under 10 points (2)

Platinum 40 stone diamond eternity ring, size 6.5, approx .70ctw and weighs approx 2.7g. Ring is unmarked but has tested positive for platinum.

DIAMOND SINGLE STONE RING, 1983 Set with a brilliant-cut diamond, mounted in 18 carat white gold, diamond approx. 1.15ct, London hallmark, ring size approx. J For further information on this lot pleas

DIAMOND SINGLE STONE RING The old brilliant-cut diamond between single-cut diamond shoulders, principal diamond approx. 1.20cts, ring size approx. R For further information on this lot please visit Bo

A DIAMOND SINGLE-STONE RING, the central brilliant-cut diamond measuring approx. 6.87x6.85 with brilliant-cut diamond shoulders within millegrain setting, mounted in 18K gold, ring size M

MALCOLM BETTS: DIAMOND SINGLE STONE RING Set with a rose-cut diamond, the 22 carat hoop of hammered finish, makers mark, London hallmark, ring size approx. M1⁄2 Footnotes: Malcolm Betts opened h

DIAMOND SINGLE STONE RING, in 18 ct. gold. Set with an old cut diamond of approx. 0.50 ct. The openwork head and shoulders of part scrolling relief design. Size M. 3.3 grams.

DIAMOND SINGLE-STONE RING, 1884 The cushion-shaped diamond, mounted in 18 carat gold, diamond approx. 4.90cts, UK hallmark, ring size approx. P (leading edge) For further information on this lot pleas

DIAMOND SINGLE-STONE RING, 1984 Set with a brilliant-cut diamond, weighing 2.96 carats, mounted in 18 carat gold, London hallmark, ring size approx. O½

DIAMOND SINGLE-STONE RING, 1906 The old brilliant-cut diamond mounted in 18 carat gold, diamond approx. 1.10cts, UK hallmark, ring size approx. Q For further information on this lot please visit Bonha

JOHN DONALD: DIAMOND SINGLE-STONE RING, 2003 Set with a brilliant-cut diamond, mounted in platinum, diamond approx. 1.00ct, maker's mark JAD, London hallmark, ring size approx. M Footnotes: From a Pri

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)

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, weighing 3.76cts, ring size approx. P, cased by F.J. Cornfield Ltd., 8 North End Road, Golders Green, also at The Broadway, Mill Hill

DIAMOND SINGLE-STONE RING The brilliant-cut diamond, weighing 2.20 carats, between princess-cut diamond shoulders, ring size approx. O Footnotes: Accompanied by a report from The Gem Testing Laborato

DIAMOND SINGLE-STONE RING Set with an old brilliant-cut diamond weighing 2.27 carats, between single-cut diamond shoulders, ring size approx. M

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, weighing 1.99 carats, between tapered baguette-cut diamond shoulders, ring size approx. I (sizing band) For further information on this lot

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 cushion-shaped diamond, diamond approx. 2.20cts, ring size approx. O½ For further information on this lot please visit Bonhams.com