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Lot 2263

Hallmarks: 0750, PT950 (French), 585. Set with 22 single cut diamonds (8x approx. 0.05 ct., 2x approx. 0.04 ct. and 12x approx. 0.01 ct.) and sapphire (approx. 6 x 6 mm) in a Pt 950 platinum setting. Clarity: VS2-SI1, color: H-I. Ring size: 16 mm / 50 mm. Weight: 7.02 gram.

Lot 2285

Hallmarks: 585, Pt. Set with 18 rose cut diamonds (18x Ø approx. 1.3 - 1.6 mm) and an emerald cut synthetic spinel in a Pt 950 platinum setting. Clarity: SI-P, color: G-H. Ring size: 16.75 mm / 52.5 mm. Weight: 7.81 gram.

Lot 2406

Set with a baguette cut synthetic sapphire (approx. 7.4 x 4.8 mm) and 14 rose cut diamonds (14 x Ø approx. 1.0 mm) in a platinum setting. Ring size: 18.75 mm / 59 mm. Weight: 2.2 gram.

Lot 2408

Hallmarks: 585, Pt. Set with 13 old European and rose cut diamonds (1x approx. 0.43 ct., 1x approx. 0.38 ct., 1x approx. 0.34 ct., 1x approx. 0.30 ct., others approx. 0.70 ct. in total) in a Pt 900 platinum setting. Clarity: SI-P, color: F-K. Ring size: 16.5 mm / 52 mm. Weight: 8.9 gram.

Lot 2413

Hallmarks: 14, 585. Set with 7 old European cut diamonds (1x approx. 0.21 ct. (P3 / G-H) and 6 of approx. 0.20 ct. in total) and 14 rose cut diamonds in a Pt 850 platinum setting. Clarity: P, color: G-H. Ring size: 17.5 mm / 55.5 mm. Weight: 3.1 gram.

Lot 2429

Hallmarks: 585, Pt. Set with one brilliant cut and 18 single cut diamonds (1x approx. 0.16 ct. (VVS1, E-F), 2x approx. 0.01 ct. and 16x approx. 0.005 ct.) in a Pt 900 platinum setting. Clarity: SI-I, color: G-H. Ring size: 18.25 mm / 57.5 mm. Weight: 2.62 gram.

Lot 2431

Approx. 75.8% platinum (BLA). Set with 7 old European cut diamonds (1x approx. 0.12 ct. and 6x approx. 0.06 ct.) and 10 rose cut diamonds (Ø approx. 0.005 ct.). Clarity: SI, color: G-H. Ring size: 18.5 mm / 58 mm. Weight: 3.76 gram.

Lot 2433

Approx. 73% platinum (BLA). Set with one old European cut diamond of approx. 0.22 ct. (P1 / G-H) and 32 single and old single cut diamonds of approx. 0.71 ct. in total (VS-SI / G-H). Ring size: 17.75 mm / 55.5 mm. Weight: 6.3 gram.

Lot 2489

Approx. 78.9% platinum (BLA). Set with 12 emerald cut diamonds (12x approx. 0.20 ct.) and 12 square cut diamonds (12x approx. 0.15 ct.). Clarity: VVS, color: D-E. Ring size: 16.5 mm / 52 mm. Weight: 5.26 gram.

Lot 2552

Hallmarks: dog's head (French platinum mark), unclear French maker's mark, Mauboussin - Paris, 05 555 P 55. Set with a faceted natural ruby ​​(Ø approx. 5.9 mm) and 2 marquise cut diamonds of approx. 0.20 ct. in total. Clarity: VS, color: E-F (1x) and G-H (1x). Ring size: 15.5 mm / 49 mm. Weight: 4.72 gram.

Lot 71

A 900 platinum diamond cluster ring. Featuring with twenty one old European cut diamonds, ca. 1.65 ct. in total, ca. H-K, ca. SI- P2. Gross weight: 8.4 g. ringmaat: 17 mm.

Lot 200

Georg Jensen, a striking single stone diamond, 18ct gold and platinum ring, the round brilliant cut stone weighing approx. 0.45ct, set in a plain conforming domed mount within an arrangement of gold "beads", the broad band in 18ct yellow gold encased in platinum, engraved marks, ring size M/N

Lot 210

An 18ct gold and platinum, emerald and diamond cluster ring in the Art Deco taste, the collet-set square-cut emerald within a band of fourteen round brilliant-cut diamonds, on a yellow gold band with inscription dated 1927, total diamond weight approx. 0.45ct, ring size J/K

Lot 108

A platinum diamond set half eternity ring together with a platinum wedding band, both size J, 4.2g, within fitted box

Lot 315

An 18 ct gold and platinum 0.50 carat diamond solitaire ring. Ring size K. 1.8 grammes total weight.

Lot 52

An 18 ct gold and platinum three stone diamond ring. Ring size J/K. 2.3 grammes total weight.

Lot 992

A platinum, sapphire and diamond ring, each diamond over 0.5carat weight, 4.7g, P

Lot 1581

A DIAMOND ETERNITY RING, round brilliant-cut diamonds to a flat-sided shank. Estimated total diamond weight 1.00ct, ring size K1/2, 2.3 gramsCONDITION REPORTGood condition. Estimated colour: G/H; estimated clarity: VS1/VS2. Not hallmarked or stamped but in our opinion would test as gold or platinum. 

Lot 1582

A PINK SAPPHIRE RING, an oval-cut pink sapphire in a claw setting. Mis-stuck hallmark, marked '900', ring size L, 7.4 gramsCONDITION REPORTGood condition. The pink sapphire measures 5.66mm x 7.16mm approximately. The hallmarks are mis-struck, with no visible assay mark, it is marked '900' and in our opinion would test as platinum.

Lot 16

C20th hallmarked 18ct gold ring with oval opal flanked by two round cut diamonds in platinum illusion settings, 3.2g, makers mark BKT, 18, London, 1966, size O 1/2, gross 3.2g

Lot 114

DIAMOND CLUSTER RINGin eighteen carat gold and platinum, ring size K

Lot 34

OPAL AND DIAMOND THREE STONE RINGthe central pear cabochon opal flanked by round cut diamonds totaling approximately 0.5cts, on platinum shank, ring size N

Lot 76

DIAMOND FOUR STONE TWIST DESIGN RINGin eighteen carat gold and platinum, the diamonds totaling approximately 0.25cts, ring size O-P

Lot 113

Fine Art Deco platinum diamond & emerald ring, set with a stunning array of sparkling white old & rose cut diamonds around a bright emerald Head 30 x 16 mm, largest emerald approx. 6.8 mm diameter, largest diamonds approx. 3.9 mm diameter Approx. 8.7 grams.

Lot 155

Fine 18 carat gold diamond ring; set with a large array of sparkling old cut diamonds in platinum settings. Head 21 x 14 mm WEIGHT: Approx. 4.8 grams.

Lot 194

Antique 18ct gold & platinum diamond & aquamarine ring central aquamarine measures approx 6mm by 5mm

Lot 224

18ct gold & platinum diamond four stone ring (2.3g)

Lot 228

18ct gold & platinum vintage five stone diamond ring (2.5g)

Lot 250

9ct gold and platinum vintage diamond and ruby ring (1.9g)

Lot 271

18ct gold & platinum antique diamond trilogy ring (2.7g)

Lot 284

18ct gold & platinum diamond ring (2.3g)

Lot 291

18ct gold & platinum vintage sapphire & diamond ring (1.5g)

Lot 321

18ct gold & platinum vintage diamond trilogy ring (2.3g)

Lot 133

A Platinum Diamond And Sapphire Ring set with five sapphires surrounded by diamonds within a pierced setting, 8.6 gms, ring size R

Lot 427

An 18ct platinum ring set with single white stone, size M, weight approx 2.4g

Lot 2002

White gold and platinum milgrain set black opal and diamond cluster ring, stamped 18ct & Plat

Lot 2004

Platinum three stone round brilliant cut diamond ring, stamped Plat, total diamond weight approx 1.50 carat

Lot 2005

Early-mid 20th century platinum channel set diamond eternity ring, with milgrain border

Lot 2059

Platinum oval Ceylon sapphire and marquise shape diamond three stone ring, hallmarked, sapphire approx 2.70 carat

Lot 2062

Early-mid 20th century platinum channel set diamond half eternity ring, with engraved decoration to the sides and shank, stamped Platinum

Lot 5

A platinum daisy ring set with 1.06ct of diamonds, size K, 5.2g

Lot 117

A ANTIQUE SAPPHIRE AND DIAMOND OVAL CLUSTER RING 18CT GOLD AND PLATINUM SIZE L

Lot 232

A three stone diamond crossover ring set in high carat gold and platinum size K - 2.3 gms

Lot 238

An Edwardian square morganite and diamond ring set in gold, shank 22ct and platinum, size N - 4.1 gms

Lot 247

A Edwardian platinum and diamond eternity ring size H - 2.3 gms

Lot 262

A ANTIQUE SAPPHIRE AND DIAMOND EDWARDIAN OVAL CLUSTER RING 18CT GOLD AND PLATINUM SIZE L

Lot 69

A UNUSUAL DESIGN PLATINUM AND DIAMOND HALF ETERNITY RING SET WITH SQUARE DIAMONDS 1.3 CT SIZE O

Lot 206

a collection of jewellery to include, a cornelian ring tested as 9ct gold, a 1776 watch key tested as 9ct gold, a purple paste ring tested as 9ct gold, a hallmarked 9ct gold ring, a cameo ring stamped '10K', a synthetic ruby ring tested as 9ct gold, gross weight 15.1g, a diamond and sapphire ring tested as platinum, a synthetic emerald ring tested as platinum, an engraved ring tested as platinum, gross weight 19g, a bar brooch stamped '14K' 1.1g, a synthetic ruby ring tested as base metal, three strings of pearls, one with a synthetic sapphire, and an 18ct gold Longines wristwatch

Lot 114

An 18 carat gold diamond ring set in platinum. Width of diamond 3mm

Lot 117

A diamond platinum and unmarked gold ring. Size q.

Lot 368

Diamond Solitaire Ring. An Art Deco diamond solitaire ring circa 1940, the 0.95ct round brilliant cut diamond set in platinum and white gold stamped '18ct', 'Plat', size N, gross weight 2.9gQty: (1)Footnote: An insurance valuation dated 2015 accompanies the lot (£9,000).

Lot 372

Emerald and Diamond Ring. An art deco emerald and diamond cluster ring, set in platinum with square-cut emerald (6mm x 5mm) bordered by 10 small diamonds and a larger diamond to each corner with calibre cut emerald shoulders, size O, gross weight 3.4gQty: (1)Footnote: An insurance valuation dated 1999 accompanies the lot (£6900).

Lot 1001

An Edwardian 18ct gold, platinum set diamond ring with 5 central round cut stones. In an open twist setting and illusion set diamond to each twist. Ring size K, total weight approx. 3.3g. Marked inside band '18ct plat'.

Lot 14

A TRANSITIONAL CUT DIAMOND TWO STONE RING The ring tension set with two diamonds calculated as 0.8ct each on an unmarked shank assessed a Platinum, ring size P ½-Q. Condition Report : The Diamonds eye clean with inclusions seen under magnification. Condition reports are offered as a guide only and we highly recommend inspecting (where possible) any lot to satisfy yourself as to its condition.

Lot 172

A diamond three-stone ring claw-set with three graduated round brilliant-cut diamonds, between channel-set round brilliant-cut diamond shoulders, mounted in platinum(Ring size: H)

Lot 236

A diamond cluster ring claw-set with an old round-cut diamond, in a border of old round and eight-cut diamonds, mounted in platinum(Ring size: P)

Lot 264

A diamond ring collet-set with a square brilliant-cut diamond, each shoulder set with seven princess-cut diamonds, mounted in platinum(Ring size: K, estimated principal diamond weight: 1.01cts)

Lot 384

Three gem-set rings including a 9ct gold emerald and diamond three-stone ring, a platinum mounted single-stone princess-cut diamond ring; and an 18ct gold diamond triple-cluster ring(Ring sizes: L, L & R)

Lot 10

DIAMOND SINGLE-STONE RING AND RINGSet with a brilliant-cut diamond, accompanied by a polished band, mounted in platinum, diamond approx. 0.65cts, partial UK hallmarks, ring sizes approx. O½ and P (2)For further information on this lot please visit Bonhams.com

Lot 288

TIFFANY: DIAMOND SINGLE-STONE RING AND HALF ETERNITY RING, 20091st: Set with a brilliant-cut diamond, between similarly-cut diamond shoulders, 2nd: Channel-set with brilliant-cut diamonds, mounted in platinum, principal diamond approx. 1.00ct, signed Tiffany & Co, maker's marks, London hallmarks, ring sizes approx. O-O½, maker's case and box, (2)For further information on this lot please visit Bonhams.com

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