A DIAMOND SINGLE-STONE RING, the central brilliant-cut diamond measuring approx. 6.87x6.85 with

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

Judith Ripka 18K yellow gold diamond and amethyst ring, set with a central square cut amethyst stone measuring approx. 8mm x 8mm, surrounded by round brilliant cut accent diamonds, measuring approx. 1

DIAMOND THREE-STONE RING Set with three old brilliant-cut diamonds, the central diamond weighing 1.87 carats, between single-cut diamond shoulders, remaining diamonds approx. 1.20cts total, ring size

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

DIAMOND SINGLE-STONE RING The brilliant-cut diamond, weighing 2.11cts, ring size approx. O

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

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 an old brilliant-cut diamond, diamond approx. 2.20cts, ring size approx. M

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.25cts, ring size approx. O, cased by John Bull & Co., Bedford

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.05cts, ring size approx. O For further information on this lot please visit Bonhams.com

DIAMOND SINGLE-STONE RING Set with an old brilliant-cut diamond, diamond approx. 1.10cts, ring size approx. I (sizing beads)

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.50cts, ring size approx. Q½ Footnotes: Please note this lot has VAT at the prevailing rate on both Hammer Price and B

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.00ct, ring size approx. J

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.20cts, ring size approx. L

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, diamond approx. 1.00cts, ring size approx. L

14kt white gold ring with a central round brilliant cut diamond measuring approx. 5.0mm. A combination of polished and brushed finishes to gold work. Stamped, "14K" to the interior band with

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

Platinum engagement ring with central round brilliant cut diamond measuring approx. 1.78cts flanked by tapered baguettes. Accompanied by a March 20th, 2021 GIA Diamond Grading Report no. 2215554033 st

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

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

BROWNS: DIAMOND THREE-STONE RING The central brilliant-cut diamond weighing 0.51 carat, set between two similarly cut diamonds weighing a total of 0.52 carat, signed Browns, ring size approx. J½

DIAMOND THREE-STONE RING The central old brilliant-cut diamond weighing 2.22 carats, between two similarly-cut diamonds weighing 1.20 carats and 0.97 carat, ring size approx. L

Single stone diamond ring, mounted in hallmarked 9ct yellow gold, central brilliant cut diamond, six claw set, with three small brilliant cut diamonds set to each shoulder, finger size N 1/4, gross we

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)