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Art Deco Platinum Diamond and Sapphire Link Bracelet: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 1.68 ctw; CONDITION: Pre-owned, Very Good; ITEM WEIGHT (GRAMS): 21.44 g; MEASUREMENTS: Bracelet 7 inches long

18 hrs Left

Art Deco Platinum Diamond and Sapphire Link Bracelet

Hampton Estate Auction

Est. US$2,500-US$3,250

US$1,700(2 bids)

VINTAGE PLATINUM 1.59 CT. DIAMOND ENGAGEMENT RING.: A vintage, platinum (stamped), engagement ring set with an approx. 1.59 ct., transition cut, natural diamond, measuring 7.58-7.55 x 4.25mm deep, of I-J color and VS clarity and approx. .15 ct. tw. rou

2 days Left

VINTAGE PLATINUM 1.59 CT. DIAMOND ENGAGEMENT RING.

William Smith Auctions

Est. US$1,500-US$2,500

US$1,000(3 bids)

Pair of Platinum, Diamond and Button Pearl Pendant-Earrings: 2 old European-cut diamonds ap. 2.10 cts., 4 small single-cut diamonds, 2 small button pearls, ap. 2.7 dwts. Diamonds: J-K-VS, no fluorescence. Hooks and French-backs. Lengths 1 1/4 inches.

3 days Left

Pair of Platinum, Diamond and Button Pearl Pendant-Earrings

DOYLE Auctioneers & Appraisers

Est. US$2,000-US$3,000

3.50ct Black Opal, 2.00ctw Diamond and Platinum Ring: 3.50ct Black Opal, 2.00ctw SI1-SI2/G-H Diamond and Solid Platinum Ring - THIS ITEM WILL COME WITH A $13,000 INSURANCE VALUATION REPORT IN THE WINNING BIDDER'S NAME. This ring is crafted of solid plati

5 days Left

3.50ct Black Opal, 2.00ctw Diamond and Platinum Ring

GWS Auctions Inc.

Est. US$12,000-US$13,000

US$1,000(1 bid)

Platinum and Diamond Stud Earrings: A pair of platinum and diamond stud earrings, 1-1/2 total carat weight. | You have additional shipping options, and are not required to use Live Shipping. Additional third-party shipper details; Phila

4 days Left

Platinum and Diamond Stud Earrings

Briggs Auction, Inc.

Est. US$300-US$500

Platinum and Approx. 2.67 CT Emerald And Diamond Rectangular Halo Ring: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 1.86 ctw; GEMSTONES: Emerald weighing approx. 2.67 carats; STAMPED: 10% IRID PLAT; CONDITION: Pre-owned, Very Good; ITEM WEIGHT (GRAMS): 9.58 g; MEAS

18 hrs Left

Platinum and Approx. 2.67 CT Emerald And Diamond Rectangular Halo Ring

Hampton Estate Auction

Est. US$5,250-US$7,000

Platinum, 14k Yellow Gold and Diamond Bracelet: Platinum, 14k Yellow Gold and Diamond Bracelet Two-tone link bracelet embellished by five round cut diamonds (unmarked platinum and gold, safety clasp marked '14k') Property from: a Private Collector,

19 hrs Left

Platinum, 14k Yellow Gold and Diamond Bracelet

Leonard Auction, a division of The Leonard Company

Est. US$800-US$1,000

18K Yellow Gold and Platinum Synthetic Pink Sapphire, Citrine, and Rose Cut Diamond Openwork Panel: METAL: 18K Yellow Gold/Platinum; GEMSTONES: Synthetic pink sapphire, citrine, one citrine chipped; TESTED: 18K Yellow Gold/Platinum; CONDITION: Pre-owned, Very Good; ITEM WEIGHT (GRAMS): 39.3 g; MEASU

18 hrs Left

18K Yellow Gold and Platinum Synthetic Pink Sapphire, Citrine, and Rose Cut Diamond Openwork Panel

Hampton Estate Auction

Est. US$5,250-US$7,000

Four Strand Amethyst Bead Bracelet with Platinum, Diamond and Ruby Bead Clasp: Amethyst beads ap. 4.2 to 3.8 mm., 72 old European and single-cut, 2 baguette and 3 marquise-shaped diamonds ap. 2.60 cts., 4 ruby beads ap. 4.2 mm., c. 1925. Length 6 1/2 inches. Amethyst beads: medi

3 days Left

Four Strand Amethyst Bead Bracelet with Platinum, Diamond and Ruby Bead Clasp

DOYLE Auctioneers & Appraisers

Est. US$1,500-US$2,000

Platinum and Old European Cut Diamond Line Bracelet: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 3.60 ctw; STAMPED: rubbed marks; CONDITION: Pre-owned, Very Good; ITEM WEIGHT (GRAMS): 18.2 g; MEASUREMENTS: Bracelet 6 3/4 inches long

18 hrs Left

Platinum and Old European Cut Diamond Line Bracelet

Hampton Estate Auction

Est. US$5,250-US$6,000

Platinum 5.04 Carat GIA Emerald Cut Diamond Engagement Ring: Platinum 5.04 Carat GIA Emerald Cut Diamond Engagement Ring This exquisite engagement ring is crafted from platinum and features a stunning 5.04 carat emerald cut diamond with GIA certification, showc

4 days Left

Platinum 5.04 Carat GIA Emerald Cut Diamond Engagement Ring

Est. US$184,184-US$239,439

18 hrs Left

Tiffany & Co. Etoile 18K Yellow Gold and Platinum Diamond Band Ring

Hampton Estate Auction

Est. US$650-US$850

GIA 11.54mm Conch Pearl, 1.00ctw Diamond, Platinum Ring: GIA Certified 11.54mm Natural Light Pink Conch Pearl, 1.00ctw VS1-SI1/G-H Diamond and Platinum Ring - THIS ITEM WILL COME WITH A $46,000 INSURANCE VALUATION REPORT IN THE WINNING BIDDER'S NAME. An exc

5 days Left

GIA 11.54mm Conch Pearl, 1.00ctw Diamond, Platinum Ring

GWS Auctions Inc.

Est. US$45,000-US$46,000

Van Cleef & Arpels 1950s Platinum 18K Yellow Gold Snowflake Diamond Bracelet 6 Carats: Van Cleef & Arpels 1950s Platinum 18K Yellow Gold Snowflake Diamond Bracelet 6 Carats This exquisite Van Cleef & Arpels bracelet, crafted in the 1950s, features a stunning snowflake design. Made from

3 days Left

Van Cleef & Arpels 1950s Platinum 18K Yellow Gold Snowflake Diamond Bracelet 6 Carats

Est. US$47,190-US$61,347

Tiffany & Co. Three Platinum and Diamond 'Seagull' Pins: 99 round diamonds ap. 3.30 cts., small single-cut diamonds, all signed Tiffany & Co., nos. 3754, 5725 and 3122, ap. 8 dwts. Diamonds: G-H-VS. 2 x 7/16, 1 5/8 x 5/16 and 1 1/8 x 1/4 inches.

3 days Left

Tiffany & Co. Three Platinum and Diamond 'Seagull' Pins

DOYLE Auctioneers & Appraisers

Est. US$3,000-US$5,000

US$1,600(2 bids)

7.77 Carat GIA Diamond Platinum Engagement Ring with Baguette Accents: 7.77 Carat GIA Diamond Platinum Engagement Ring with Baguette Accents This platinum engagement ring features a GIA certified 7.77 carat diamond with S-T color and VVS1 clarity, measuring 13.53 x 13.61

2 days Left

7.77 Carat GIA Diamond Platinum Engagement Ring with Baguette Accents

Est. US$93,847-US$122,001

Art Deco Platinum, Diamond, and Emerald Ring Setting: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 0.18 ctw; GEMSTONES: Emerald; STAMPED: 5% Irid. Platinum; CONDITION: Pre-owned, Good; ITEM WEIGHT (GRAMS): 4.03 g; MEASUREMENTS: Ring size 6 1/2, Cen

18 hrs Left

Art Deco Platinum, Diamond, and Emerald Ring Setting

Hampton Estate Auction

Est. US$375-US$500

Wide Gold, Platinum, Diamond and Synthetic Ruby Buckle Slide Bracelet: 8 single-cut diamonds ap. .55 ct., one small round and 15 square-cut synthetic rubies, c. 1940, ap. 51.7 dwts. Length adjustable. Tests as 14 kt. Width 1 3/16 inches.

3 days Left

Wide Gold, Platinum, Diamond and Synthetic Ruby Buckle Slide Bracelet

DOYLE Auctioneers & Appraisers

Est. US$4,000-US$6,000

US$2,000(1 bid)

Platinum Heart Shaped Aquamarines and Diamond Bracelet, Bush Family Provenance: five heart brilliant cut aquamarines, approx. 25.00ctw., 90 round full and single cut diamonds, approx. 3.00ctw., tests platinum, 6-5/8 in. length, 26.2 g Provenance: Estate of Flora Bush Jansing, Fir

2 days Left

Platinum Heart Shaped Aquamarines and Diamond Bracelet, Bush Family Provenance

Est. US$2,000-US$4,000

South Sea Pearl and Diamond Platinum Earrings by David Webb: South Sea Pearl and Diamond Platinum Earrings by David Webb These elegant earrings by David Webb are crafted in platinum and feature two South Sea pearls measuring 17.75mm each. The earrings are adorn

2 days Left

South Sea Pearl and Diamond Platinum Earrings by David Webb

Est. US$49,699-US$64,608

Featured

RAYMOND YARD PLATINUM STAR SAPPH & DIAMOND BRACELET.: A signed, Raymond Yard, Art Deco, platinum bracelet set with approx. 18 ct. tw., medium blue, star sapphires and approx. 2.25 ct. tw. transition cut, natural diamonds of F-G color and VS clarity, 10mm

2 days Left

RAYMOND YARD PLATINUM STAR SAPPH & DIAMOND BRACELET.

William Smith Auctions

Est. US$7,000-US$10,000

Magnificent 9.49ct Natural Opal Platinum Diamond Pink Sapphire Ring by Oscar Friedman w/ Appriasal: Title: Magnificent 9.49ct Natural Opal Platinum Diamond Pink Sapphire Statement Ring by Oscar Friedman w/ Appraisal Description: A stunning platinum design that features a huge & colorful natural opa

Mar 11, 2026

Magnificent 9.49ct Natural Opal Platinum Diamond Pink Sapphire Ring by Oscar Friedman w/ Appriasal

Hess Fine Auctions

Est. US$2,000-US$2,500

Art Deco Platinum and Diamond Link Bracelet: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 6.50 ctw; TESTED: Platinum; CONDITION: Pre-owned, Fair; ITEM WEIGHT (GRAMS): 36.1 g; MEASUREMENTS: Bracelet 6 1/2 inches in interior circumference, 5

18 hrs Left

Art Deco Platinum and Diamond Link Bracelet

Hampton Estate Auction

Est. US$4,750-US$6,500

Stunning Platinum 18K Gold Diamond Emerald Flower Necklace: Stunning Platinum 18K Gold Diamond Emerald Flower Necklace This exquisite necklace features a stunning floral design crafted from a combination of platinum and 18K yellow gold. It is adorned with appr

14 hrs Left

Stunning Platinum 18K Gold Diamond Emerald Flower Necklace

Est. US$197,093-US$256,220

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