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Mauboussin 1940s Platinum Diamond Double Clip Brooch 12 Cts: Mauboussin 1940s Platinum Diamond Double Clip Brooch 12 Cts This exquisite Mauboussin Double Clip Brooch, dating back to the 1940s, showcases a stunning design crafted from platinum. Weighing approxim

5 days Left

Mauboussin 1940s Platinum Diamond Double Clip Brooch 12 Cts

Est. $17,433-$22,662

$100

Mynt AuctionsNew York, NY

PLATINUM AND 14K WHITE GOLD 2.0CT DIAMOND AND AQUAMARINE PENDANT NECKLACE: A vibrant 12.0 carat Aquamarine gemstone takes center stage on this exquisite necklace. Incredibly detailed, the pendant is crafted from a combination of Platinum and 14K White Gold. Diamonds with a t

3 days Left

PLATINUM AND 14K WHITE GOLD 2.0CT DIAMOND AND AQUAMARINE PENDANT NECKLACE

Est. $5,500-$22,000

$5,500

Robinhood AuctionsLas Vegas, NV

Pair of Platinum and Diamond Earclips: 28 round and 48 single-cut diamonds ap. 2.30 cts., c. 1935, ap. 8 dwts.

May 21, 2026

Pair of Platinum and Diamond Earclips

Est. $1,500-$2,000

$750

DOYLE Auctioneers & AppraisersNew York, NY

An 18K gold key wind open face pocket watch with 18K gold and platinum chain Chester Hallmark fo...: An 18K gold key wind open face pocket watch with 18K gold and platinum chain Date: Chester Hallmark for 1885 Movement: Gilt full plate English lever, plain three arm balance, diamond end stone, No.182

May 20, 2026

An 18K gold key wind open face pocket watch with 18K gold and platinum chain Chester Hallmark fo...

Est. £1,500-£2,000

£1,500

BonhamsKnightsbridge, GB

Ray Bidegain (American, b. 1959), Two Nude Platinum Prints: Ray Bidegain (American, b. 1959), Two Nude Platinum Prints each a platinum print on paper, 2004, both pencil signed twice, dated, and inscribed, matted, unframed. Sheet size 11 5/8 x 9 5/8 in. (one ho

May 21, 2026

Ray Bidegain (American, b. 1959), Two Nude Platinum Prints

Est. $50-$25,000

$50

Leland LittleHillsborough, NC

Platinum Art Deco Diamond Brooch with 5.25 Carats G-H VVS-VS Stones: Platinum Art Deco Diamond Brooch with 5.25 Carats G-H VVS-VS Stones This Art Deco brooch is crafted in platinum and set with approximately 5.25 carats of diamonds featuring G-H color and VVS-VS clarit

13 hrs Left

Platinum Art Deco Diamond Brooch with 5.25 Carats G-H VVS-VS Stones

Est. $5,005-$6,506

$100

BidhausNew York, NY

GIA 3.48ct Sapphire VS1 Diamond Platinum Ring: Featured in this lot is this 3.48ct sapphire VS1 diamond platinum ring with GIA and AIGL paperwork. The ring is polished, stamped, and tested platinum construction that is marked on the inside of the

4 days Left

GIA 3.48ct Sapphire VS1 Diamond Platinum Ring

Est. $20,000-$30,000

$3,750

North American Auction Co.Bozeman, MT

STUNNING PLATINUM 8.10 CT. SAPPHIRE & DIAMOND RING.: A stunning platinum (stamped), hand-engraved ring set with an 8.10 ct., cushion cut, medium, slightly violetish blue, sapphire and .98 ct. tw., round brilliant and pear shaped, natural diamonds of G-H

May 27, 2026

STUNNING PLATINUM 8.10 CT. SAPPHIRE & DIAMOND RING.

Est. $12,000-$18,000

$6,000

William Smith AuctionsPlainfield , NH

Vintage GIA Certified 15.97ct Blue Star Sapphire Diamond Ring in Platinum: Vintage GIA Certified 15.97ct Blue Star Sapphire Diamond Ring in Platinum Discover a stunning vintage ring featuring a natural genuine star sapphire, showcasing an oval cabochon cut with a striking bl

5 days Left

Vintage GIA Certified 15.97ct Blue Star Sapphire Diamond Ring in Platinum

Est. $18,083-$23,507

$100

Mynt AuctionsNew York, NY

18 Inch Platinum Diamond Cross Pendant: 18 Inch Platinum Diamond Cross Pendant, Consisting of Twenty-Three (23) Natural Baguette Diamonds Weighing 6.00 Carats. Diamonds are F in Color and VS in Clarity. Pendant Weighs 13.0 Grams.

May 30, 2026

18 Inch Platinum Diamond Cross Pendant

Est. $12,000-$16,000

$5,750

Northgate Gallery, Inc.Hixson, TN

Antique Gold, Platinum, Sapphire, Diamond and Seed Pearl Tassel Mesh Purse: 14 kt., 14 square and fancy-shaped sapphires, one round cabochon sapphire thumbpiece, 17 old European-cut diamonds ap. .50 ct., multistrand tassel, seed pearls, mesh strap, oval cabochon sapphire, c.

May 21, 2026

Antique Gold, Platinum, Sapphire, Diamond and Seed Pearl Tassel Mesh Purse

Est. $8,000-$12,000

$4,000

DOYLE Auctioneers & AppraisersNew York, NY

Antique Art Deco Platinum 7.3ctw GIA Colombian Emerald Diamond Brooch: Antique Art Deco Platinum 7.3ctw GIA Colombian Emerald Diamond Brooch This exquisite antique brooch showcases a stunning 4.65-carat GIA certified Colombian emerald, elegantly crafted from solid .900 p

May 21, 2026

Antique Art Deco Platinum 7.3ctw GIA Colombian Emerald Diamond Brooch

Est. $6,747-$8,771

$100

BidhausNew York, NY

GIA NO HEAT Ruby VS2 Diamond Platinum Ring: Featured in this lot is this (No indications of heating) ruby VS2 diamond platinum ring with GIA and GGA paperwork. The ring is polished, stamped, and tested platinum construction and are marked as fo

4 days Left

GIA NO HEAT Ruby VS2 Diamond Platinum Ring

Est. $15,000-$20,000

$2,750

North American Auction Co.Bozeman, MT

Lot of 3 Vintage Platinum & Diamonds Ring Settings: Lot of 3 Vintage Platinum & Diamonds Ring Settings. Please Note- Due to Recent Fraudulent Activity, All Jewelry Items Purchased by New Customers Cannot Be Shipped Out Until 3 Weeks After The Auction D

May 20, 2026

Lot of 3 Vintage Platinum & Diamonds Ring Settings

Est. $600-$1,200

$300

World Auction Gallery LLCEast Meadow, NY

Platinum GUBELIN Certified 18.13 Ct Burma Sapphire & Diamond Necklace: Platinum GUBELIN Certified 18.13 Ct Burma Sapphire & Diamond Necklace This exquisite Platinum GUBELIN Certified Burma Sapphire Pendant & Diamond Necklace features a stunning 18.13 Ct. Gubelin Certifie

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Platinum GUBELIN Certified 18.13 Ct Burma Sapphire & Diamond Necklace

Est. $216,112-$280,945

$100

BidhausNew York, NY

Platinum White Diamond & Coral Ring: 900 (90%) Platinum Cocktail Ring Featuring 1 Center Set Prominent Pink Coral Stone Approx. 7.44ct Flanked By 14 Baguette Cut White Earth Mined Diamonds Approx. 0.04ct Each. Flanking The Coral Stone On

1 day Left

Platinum White Diamond & Coral Ring

Est. $10-$10,000

$4

Berner's Antique Auction GallerySpringfield, OH

Platinum Ring with 4.51 Carat Heart-Shaped Diamond and Baguette Accents 1950s: Platinum Ring with 4.51 Carat Heart-Shaped Diamond and Baguette Accents 1950s This 1950s platinum ring features a 4.51 carat heart-shaped diamond with L color and SI2 clarity. The centerpiece is compl

7 hrs Left

Platinum Ring with 4.51 Carat Heart-Shaped Diamond and Baguette Accents 1950s

Est. $14,924-$19,401

$100

Mynt AuctionsNew York, NY

GIA 4.28ct Tanzanite VS2 Diamond Platinum Ring: Featured in this lot is this 4.28ct tanzanite VS2 diamond platinum ring with GIA and GGA paperwork. The ring is polished, stamped, and tested platinum construction that is marked as follows: Oscar Fri

4 days Left

GIA 4.28ct Tanzanite VS2 Diamond Platinum Ring

Est. $20,000-$30,000

$3,750

North American Auction Co.Bozeman, MT

Tiffany & Co. Etoile Crossover Ring 18k Yellow Gold Platinum Diamonds: Tiffany & Co. Etoile Crossover Ring 18k Yellow Gold Platinum Diamonds Discover the elegance of the Tiffany & Co. Etoile Ring, a stunning band crafted from 18k yellow gold and platinum. This modern yet

2 days Left

Tiffany & Co. Etoile Crossover Ring 18k Yellow Gold Platinum Diamonds

Est. $3,549-$4,613

$100

Mynt AuctionsNew York, NY

Cushion Cut 2.31ct Fancy Intense Yellow Diamond Ring GIA Platinum 18K Gold: Cushion Cut 2.31ct Fancy Intense Yellow Diamond Ring GIA Platinum 18K Gold This exquisite ring features a stunning 2.31 carat cushion cut diamond with a fancy intense yellow hue, certified by GIA. The

May 23, 2026

Cushion Cut 2.31ct Fancy Intense Yellow Diamond Ring GIA Platinum 18K Gold

Est. $23,270-$30,251

$100

BidhausNew York, NY

PLATINUM 0.56CT DIAMOND AND SAPPHIRE RING: This luxury ring is filled with exquisite details. On this timeless piece, a 4.15 carat GIA-Certified Sapphire center stone is elegantly accented by Diamonds totaling 0.56 carats. The detailed Platinu

3 days Left

PLATINUM 0.56CT DIAMOND AND SAPPHIRE RING

Est. $5,500-$22,000

$5,500

Robinhood AuctionsLas Vegas, NV

7.25 Inch Platinum Diamond Bracelet: 7.25 Inch Platinum Diamond Bracelet, Consisting of Fifty-Eight (58) Natural Emerald-Cut Diamonds Weighing 10.61 Carats. Diamonds are H in Color and VS in Clarity.

May 30, 2026

7.25 Inch Platinum Diamond Bracelet

Est. $22,000-$30,000

$10,500

Northgate Gallery, Inc.Hixson, TN

Richard Perry's Platinum Record Patti LaBelle 'Winner In You': This framed award commemorates the sale of over 1,000,000 copies of Patti LaBelle's album and cassette 'Winner In You'. It features a platinum record, a cassette tape labeled 'Platinum Sales Award', a

May 21, 2026

Richard Perry's Platinum Record Patti LaBelle 'Winner In You'

Est. $700-$1,000

$350

Abell AuctionLos Angeles, CA

Vintage Platinum GIA Certified 2.72ctw Star Ruby Diamond Cocktail Ring: Vintage Platinum GIA Certified 2.72ctw Star Ruby Diamond Cocktail Ring This exquisite vintage cocktail ring showcases a stunning 2.72ctw cabochon star ruby, accented beautifully by round and marquise

2 days Left

Vintage Platinum GIA Certified 2.72ctw Star Ruby Diamond Cocktail Ring

Est. $7,722-$10,038

$100

BidhausNew York, NY

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