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Platinum natural kashmir sapphire diamond ring GIA 2.28 carats: Platinum natural unheated Kashmir sapphire natural diamond ring, comes with GIA report. Total 2,28 carats sapphire and no indication of heating. Total 0.71 carats natural diamonds. US ring size 6.75.

4 days Left

Platinum natural kashmir sapphire diamond ring GIA 2.28 carats

Est. $2,200-$3,200

$500

West Coast Auction Gallery IRVINE, CA

Platinum Necklace with 12.22ct Old European Diamonds EGL Certified: Platinum Necklace with 12.22ct Old European Diamonds EGL Certified This refined platinum necklace features 16 old European cut diamonds, each individually bezel set for a clean and fluid appearance. T

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Platinum Necklace with 12.22ct Old European Diamonds EGL Certified

Est. $24,492-$31,839

$100

BidhausNew York, NY

Platinum 2.39 Ct. Sapphire & Diamond Ring: Platinum 2.39 Ct. Sapphire & Diamond Ring Item # 13764 Category Rings Platinum 2.39 Ct. Sapphire & Diamond Ring Weighing 8.0 grams Set with a 2.39 Ct. Sapphire Along with 24 Baguette Diamonds weighing

6 days Left

Platinum 2.39 Ct. Sapphire & Diamond Ring

Est. $5,000-$7,500

$2,500

Joshua KodnerDania Beach, FL

Art Deco Platinum Ring 6.41 Ct Diamond VS1 Clarity: Art Deco Platinum Ring 6.41 Ct Diamond VS1 Clarity This exquisite Art Deco ring features a stunning 6.41 Ct. European-cut diamond, showcasing a remarkable M-N color and VS1 clarity. The ring is furthe

7 days Left

Art Deco Platinum Ring 6.41 Ct Diamond VS1 Clarity

Est. $53,768-$69,898

$41,250

Mynt AuctionsNew York, NY

Art Deco Emerald, Diamond, Platinum Pendant-Broo: Art Deco Emerald, Diamond, Platinum Pendant-Brooch Stones: Rectangular-cut emerald weighing approximately 1.45 carats, calibré-cut emeralds; European,

May 21, 2026

Art Deco Emerald, Diamond, Platinum Pendant-Broo

Est. $2,400-$3,600

$1,500

Heritage AuctionsDallas, TX

A set of ten Moser Splendid Platinum clear cut glass water goblets, 20th century and later: A set of ten Moser Splendid Platinum clear cut glass water goblets 20th century and later Each with etched factory mark. height 8 3/4in (22.2cm)

May 21, 2026

A set of ten Moser Splendid Platinum clear cut glass water goblets, 20th century and later

Est. $800-$1,200

$400

Andrew Jones AuctionsLos Angeles, CA

Platinum 42 Inch Marquise Diamond Necklace 33.90 Ct: Platinum 42 Inch Marquise Diamond Necklace 33.90 Ct This stunning Platinum Necklace features a beautiful by-the-yard design adorned with 95 sparkling Marquise Diamonds, totaling approximately 33.90 Ct

7 days Left

Platinum 42 Inch Marquise Diamond Necklace 33.90 Ct

Est. $44,811-$58,254

$34,250

Mynt AuctionsNew York, NY

Platinum natural kashmir sapphire diamond ring GIA: Platinum natural and unheated Kashmir sapphire diamond ring. Comes with GIA report. Total US ring size 6.75. Total 3.58 carats sapphire and total 0.66 carats natural diamonds.

4 days Left

Platinum natural kashmir sapphire diamond ring GIA

Est. $3,000-$4,000

$700

West Coast Auction Gallery IRVINE, CA

Platinum Art Deco Diamond Ring Featuring 6.97 Carat Center Stone: Platinum Art Deco Diamond Ring Featuring 6.97 Carat Center Stone This Art Deco platinum ring features a central 6.97 carat diamond with M color and VVS1 clarity, measuring 12.82 x 7.30 mm. The ring is

5 days Left

Platinum Art Deco Diamond Ring Featuring 6.97 Carat Center Stone

Est. $70,759-$91,986

$54,000

Mynt AuctionsNew York, NY

Platinum and Bezel Set Diamond Drop Necklace: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 1.44 ctw; STAMPED: 950Pt; TESTED: Platinum; CONDITION: Pre-owned, Good; ITEM WEIGHT (GRAMS): 4.42 g; MEASUREMENTS: Necklace 18 1/ inches long, Drop 1

2 days Left

Platinum and Bezel Set Diamond Drop Necklace

Est. $600-$800

$400

Hampton Estate AuctionNew York, NY

GIA Certified Platinum Ring With 11.74ct Cushion Color Change Sapphire and Diamond Halo: GIA Certified Platinum Ring With 11.74ct Cushion Color Change Sapphire and Diamond Halo This platinum cocktail ring showcases a certified natural Ceylon blue sapphire with a prominent color change fro

5 days Left

GIA Certified Platinum Ring With 11.74ct Cushion Color Change Sapphire and Diamond Halo

Est. $26,403-$34,323

$20,250

Mynt AuctionsNew York, NY

Platinum Art Deco Diamond Engagement Ring 3.19 Carats Vintage: Platinum Art Deco Diamond Engagement Ring 3.19 Carats Vintage This Art Deco style ring is crafted from platinum and features a total diamond weight of 3.19 carats. The ring is pre-owned and weighs 4.1

5 days Left

Platinum Art Deco Diamond Engagement Ring 3.19 Carats Vintage

Est. $49,023-$63,729

$37,500

Mynt AuctionsNew York, NY

1960's Platinum Brooch with 159 Diamonds and Amethysts: 1960's Platinum Brooch with 159 Diamonds and Amethysts This exquisite 1960's brooch features a striking combination of platinum, diamonds, amethysts, and turquoise. It weighs 40.4 grams and is adorned

16 hrs Left

1960's Platinum Brooch with 159 Diamonds and Amethysts

Est. $11,934-$15,514

$100

Mynt AuctionsNew York, NY

Vintage Platinum Ring Set with 1.06 Ct. and 1.56 Ct. Diamonds: Vintage Platinum Ring Set with 1.06 Ct. and 1.56 Ct. Diamonds A vintage platinum ring, the shoulders accented with small round diamonds in pierced Deco-style motifs, and set with two major diamonds: o

May 30, 2026

Vintage Platinum Ring Set with 1.06 Ct. and 1.56 Ct. Diamonds

Est. $3,000-$5,000

$1,500

Nadeau's Auction GalleryWindsor, CT

Tiffany & Co. Platinum Circle Brooch 12.4g Elegant Design: Tiffany & Co. Platinum Circle Brooch 12.4g Elegant Design This exquisite brooch from Tiffany & Co. is crafted in luxurious platinum, weighing 12.4 grams. Its elegant circular design measures 4.75 inch

16 hrs Left

Tiffany & Co. Platinum Circle Brooch 12.4g Elegant Design

Est. $30,680-$39,884

$100

Mynt AuctionsNew York, NY

PLATINUM CAT'S-EYE ALEXANDRITE & DIAMOND RING W/GIA REPORT: Ladies' platinum natural cat's-eye alexandrite cabochon and diamond ring accompanied by an original GIA alexandrite origin report. Based on the GIA measurements, the center stone has an estimated weig

Jun 10, 2026

PLATINUM CAT'S-EYE ALEXANDRITE & DIAMOND RING W/GIA REPORT

Est. $30,000-$50,000

$15,000

Dan Morphy AuctionsDenver, PA

Diamond Necklace in Platinum and 18K White Gold 73.72 Carat: Diamond Necklace in Platinum and 18K White Gold 73.72 Carat This pre-owned necklace features an exquisite design crafted from platinum and 18K white gold. The necklace is set with a total of 73.72 car

6 days Left

Diamond Necklace in Platinum and 18K White Gold 73.72 Carat

Est. $97,929-$127,307

$75,000

Mynt AuctionsNew York, NY

A set of eight Moser Splendid Platinum clear cut glass water goblets, 20th century and later: A set of eight Moser Splendid Platinum clear cut glass water goblets 20th century and later Each with etched factory mark. height 8 3/4in (22.2cm)

May 21, 2026

A set of eight Moser Splendid Platinum clear cut glass water goblets, 20th century and later

Est. $600-$800

$300

Andrew Jones AuctionsLos Angeles, CA

Luxury Platinum 27.52 Ct Diamond Chandelier Earrings 3 Inch: Luxury Platinum 27.52 Ct Diamond Chandelier Earrings 3 Inch Exquisite Platinum Diamond Chandelier Earrings featuring a stunning total weight of 27.52 carats. These earrings are adorned with high-quali

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Luxury Platinum 27.52 Ct Diamond Chandelier Earrings 3 Inch

Est. $44,265-$57,544

$34,000

Mynt AuctionsNew York, NY

David Webb Horse Face Brooch Platinum 18K Gold White Enamel Diamonds: David Webb Horse Face Brooch Platinum 18K Gold White Enamel Diamonds This stunning David Webb brooch features a striking horse face design crafted from platinum and 18K yellow gold. The piece weighs 4

5 days Left

David Webb Horse Face Brooch Platinum 18K Gold White Enamel Diamonds

Est. $32,032-$41,641

$24,500

Mynt AuctionsNew York, NY

GIA Certified Platinum Ring with Old European and Baguette Diamonds 2.07ctw: GIA Certified Platinum Ring with Old European and Baguette Diamonds 2.07ctw This vintage women's engagement ring features a 1.72 carat natural Old European cut diamond, certified by GIA with K color a

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GIA Certified Platinum Ring with Old European and Baguette Diamonds 2.07ctw

Est. $11,518-$14,973

$345

Mynt AuctionsNew York, NY

Art Deco Platinum Diamond & Sapphire Brooch: Art Deco Platinum Diamond & Synthetic Sapphire Brooch Item # 13598 Category Pins - Clips Art Deco Platinum Diamond & Synthetic Sapphire Brooch Weighing 13.0 grams Set with an app. 1.00 Ct. Ascher-cut

6 days Left

Art Deco Platinum Diamond & Sapphire Brooch

Est. $10,000-$15,000

$5,000

Joshua KodnerDania Beach, FL

2 days Left

Tacori Platinum and Diamond Ring Setting

Est. $1,500-$2,000

$1,000

Hampton Estate AuctionNew York, NY

David Webb Platinum 18K Gold Dinner Roll Necklace 6 Carat Diamonds: David Webb Platinum 18K Gold Dinner Roll Necklace 6 Carat Diamonds This exquisite David Webb Dinner Roll Necklace showcases an elegant design crafted from a luxurious combination of platinum and 18K y

16 hrs Left

David Webb Platinum 18K Gold Dinner Roll Necklace 6 Carat Diamonds

Est. $79,586-$103,461

$100

Mynt AuctionsNew York, NY

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