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PLATINUM KASHMIR SAPPHIRE & DIAMOND BRACELET W/GIA REPORT: Ladies' platinum Kashmir sapphire (30.80ctw) and diamond (2.19ctw) bracelet accompanied by an original GIA sapphire origin report and a GGA appraisal report with an ERRV of $52,870.00 (See additional

Jun 10, 2026

PLATINUM KASHMIR SAPPHIRE & DIAMOND BRACELET W/GIA REPORT

Est. $6,000-$10,000

$3,000

Dan Morphy AuctionsDenver, PA

Platinum 3.60ct Square Cut Diamond Eternity Band Ring Size 6: Platinum 3.60ct Square Cut Diamond Eternity Band Ring Size 6 This exquisite eternity band ring is meticulously crafted from platinum, showcasing a stunning full circle of square cut diamonds with a to

3 days Left

Platinum 3.60ct Square Cut Diamond Eternity Band Ring Size 6

Est. $9,438-$12,269

$7,200

Mynt AuctionsNew York, NY

A set of sixteen Moser Splendid Platinum footed sherbet bowls, 20th century and later: A set of sixteen Moser Splendid Platinum footed sherbet bowls 20th century and later Each with etched factory mark. height 3 1/2in (8.9cm); diameter 5in (12.7cm)

May 21, 2026

A set of sixteen Moser Splendid Platinum footed sherbet bowls, 20th century and later

Est. $300-$500

$140

Andrew Jones AuctionsLos Angeles, CA

A PLATINUM, DIAMOND AND SAPPHIRE RING, CIRCA 1920: A PLATINUM, DIAMOND AND SAPPHIRE RING, CIRCA 1920 Centering an old European-cut diamond, weighing 2.09 carats, in an openwork mounting accented with old European and single-cut diamonds and calibr

May 19, 2026

A PLATINUM, DIAMOND AND SAPPHIRE RING, CIRCA 1920

Est. $8,000-$12,000

$8,000

BonhamsLos Angeles, CA

David Webb Vintage Bracelet Platinum 18K Yellow Gold Emeralds Diamonds: David Webb Vintage Bracelet Platinum 18K Yellow Gold Emeralds Diamonds This exquisite vintage bracelet by David Webb showcases a stunning combination of platinum and 18K yellow gold. It features 14 be

5 days Left

David Webb Vintage Bracelet Platinum 18K Yellow Gold Emeralds Diamonds

Est. $54,652-$71,047

$100

BidhausNew York, NY

Rolex. A stainless steel and platinum automatic calendar bracelet watch Yacht-Master, Ref: 1662...: Rolex. A stainless steel and platinum automatic calendar bracelet watch Model: Yacht-Master Reference: 16622 Date: Circa 2006 Movement: 31-jewel Cal.3135 automatic, adjusted to 5 positions & temperatu

May 20, 2026

Rolex. A stainless steel and platinum automatic calendar bracelet watch Yacht-Master, Ref: 1662...

Est. £2,000-£3,000

£2,000

BonhamsKnightsbridge, GB

28 Carat Diamond Tennis Bracelet in Platinum 7.5 Inch Length: 28 Carat Diamond Tennis Bracelet in Platinum 7.5 Inch Length This platinum tennis bracelet features approximately 28.00 carats of diamonds, set with 27 stones of F-G color and SI1-SI3 clarity. The bra

7 days Left

28 Carat Diamond Tennis Bracelet in Platinum 7.5 Inch Length

Est. $80,262-$104,340

$100

BidhausNew York, NY

Platinum Blue Sapphire and Diamond Halo Pendant Necklace: Platinum pendant necklace featuring an oval-cut blue sapphire center stone within a halo of ten round brilliant-cut diamonds. The pendant is suspended from a platinum curb link chain secured by a spri

22 hrs Left

Platinum Blue Sapphire and Diamond Halo Pendant Necklace

Est. $10-$100,000

$10

Gallery 63Atlanta, GA

Bubble Collection Platinum Pendant Necklace With Diamonds and Tsavorite by Tiffany & Co.: Bubble Collection Platinum Pendant Necklace With Diamonds and Tsavorite by Tiffany & Co. This Tiffany & Co. Bubble pendant necklace features a refined vertical arrangement of bezel-set vibrant green t

3 days Left

Bubble Collection Platinum Pendant Necklace With Diamonds and Tsavorite by Tiffany & Co.

Est. $5,421-$7,047

$100

BidhausNew York, NY

Bulgari Corona Diamond Platinum Wedding Ring Set: Bulgari Corona Diamond Platinum Wedding Ring Set, engagement ring and wedding band set, the engagement ring with a round brilliant cut diamond of approximately .52 carats set in a platinum mounting, m

May 28, 2026

Bulgari Corona Diamond Platinum Wedding Ring Set

Est. $2,000-$4,000

$1,000

Auctions at ShowplaceAstoria, NY

Gold, Platinum, Sapphire and Colored Diamond Thistle Brooch: 8 round and oval sapphires ap. 4.45 cts., one light yellow round diamond ap. .50 ct., signed SC, ap. 16.6 dwts. The colored diamond has not been tested.Tests as 18 kt. Sapphires: medium light pastel c

May 21, 2026

Gold, Platinum, Sapphire and Colored Diamond Thistle Brooch

Est. $1,800-$2,500

$900

DOYLE Auctioneers & AppraisersNew York, NY

1.75 EMERALD PLATINUM LADIES RING W/ DIAMONDS NEW: One polished, stamped, and tested platinum ring marked Oscar Friedman. The ring is mounted with: 1 genuine emerald center stone weighing approximately 1.75 carat, and 14 genuine faceted diamonds weigh

May 30, 2026

1.75 EMERALD PLATINUM LADIES RING W/ DIAMONDS NEW

Est. $2,825-$10,000

$675

Florida Estate Sales Inc.Tallahassee, FL

ART DECO PLATINUM DIAMOND AND 3.5-CARAT SAPPHIRE RING: An exquisite Art Deco period (1925-1935) Italian aristocratic custom-made platinum ring featuring a stunning 3.5-carat natural sapphire at its center, measuring 3/8 x 5/16 in. (10 x 8 mm). Surrounding

6 days Left

ART DECO PLATINUM DIAMOND AND 3.5-CARAT SAPPHIRE RING

Est. $8,000-$10,000

$3,000

Yakon AuctionsGermantown, MD

A PLATINUM AND DIAMOND NECKLACE: A PLATINUM AND DIAMOND NECKLACE A line necklace comprising round brilliant-cut diamonds; estimated total diamond weight 11.50 carats; length 17 in. Footnotes: OVERALL CONDITION: Metal partially stampe

May 19, 2026

A PLATINUM AND DIAMOND NECKLACE

Est. $5,500-$7,500

$5,500

BonhamsLos Angeles, CA

Vintage Platinum 13.64ctw GIA Red Orange Opal Diamond Cocktail Ring: Vintage Platinum 13.64ctw GIA Red Orange Opal Diamond Cocktail Ring Embrace the elegance of this vintage cocktail ring, featuring a stunning natural opal at its center. The ring showcases a large oval

4 days Left

Vintage Platinum 13.64ctw GIA Red Orange Opal Diamond Cocktail Ring

Est. $8,671-$11,272

$140

BidhausNew York, NY

PLATINUM LADIES RING W/ DIAMOND & ALEXANDRITE GIA: One polished, stamped, and tested platinum ring marked Oscar Friedman. The ring is mounted with: 1 genuine GIA certified alexandrite center stone weighing 1.36 carats, and 100 genuine round diamonds w

May 30, 2026

PLATINUM LADIES RING W/ DIAMOND & ALEXANDRITE GIA

Est. $3,600-$10,000

$875

Florida Estate Sales Inc.Tallahassee, FL

FEI LIU: A PLATINUM, PERIDOT AND DIAMOND PENDANT NECKLACE: FEI LIU: A PLATINUM, PERIDOT AND DIAMOND PENDANT NECKLACE The pendant comprising a pentagon-shaped peridot, accented by icicles of round brilliant-cut diamonds, suspended from an oval link chain neckl

May 19, 2026

FEI LIU: A PLATINUM, PERIDOT AND DIAMOND PENDANT NECKLACE

Est. $2,000-$3,000

$2,000

BonhamsLos Angeles, CA

A set of eight Moser Splendid Platinum clear cut glass tumblers, 20th century and later: A set of eight Moser Splendid Platinum clear cut glass tumblers 20th century and later Each with etched factory mark. height 4 1/2in (11.4cm)

May 21, 2026

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

Est. $400-$600

$200

Andrew Jones AuctionsLos Angeles, CA

Platinum Diamond Shared Prong Ring: Platinum Diamond Shared Prong Ring, featuring five round brilliant cut diamonds, approx. 1.25 carats total weight, G-H color / VS - SI clarity, marked: "PLAT" with maker's mark. Measuring approx. US s

May 28, 2026

Platinum Diamond Shared Prong Ring

Est. $3,000-$5,000

$1,500

Auctions at ShowplaceAstoria, NY

Tanzanite, Diamond, Platinum Ring: Tanzanite, Diamond, Platinum Ring Featuring a cushion-shape tanzanite weighing approximately 6.60 cts., accented by sixteen round brilliant-cut diamonds weighing a total of approximately 1.25 cttw., s

5 days Left

Tanzanite, Diamond, Platinum Ring

Est. $2,000-$3,000

$1,000

Fine Estate, Inc. San Rafael, CA

Platinum Gold Necklace With Coral Turquoise Onyx Accents Signed Webb: Platinum Gold Necklace With Coral Turquoise Onyx Accents Signed Webb This necklace by David Webb features a carved Chinese coral centerpiece bead of approximately 27.00 mm, surrounded by large coral b

23 hrs Left

Platinum Gold Necklace With Coral Turquoise Onyx Accents Signed Webb

Est. $52,754-$68,580

$100

BidhausNew York, NY

GIA Natural Colombian Emerald Fine Diamond Exquisite Art Deco Platinum Numbered Ring: Described & Photographed By:CHRIS AJP GIA / NODDDD / EST. $18K-29K Title: GIA Natural Colombian Emerald Fine Diamond Exquisite Art Deco Platinum Numbered Ring Description: A beautifully numbered plati

Jun 11, 2026

GIA Natural Colombian Emerald Fine Diamond Exquisite Art Deco Platinum Numbered Ring

Est. $18,000-$29,000

$10

Hess Fine AuctionsSt Petersburg, FL

Platinum Necklace With 9.55 Carat Old European Cut Diamonds: Platinum Necklace With 9.55 Carat Old European Cut Diamonds This platinum Diamonds by the Yard necklace features 15 old European cut diamonds, each averaging approximately 0.64 carats, for a total dia

3 days Left

Platinum Necklace With 9.55 Carat Old European Cut Diamonds

Est. $11,791-$15,328

$100

BidhausNew York, NY

A FIVE-PIECE PLATINUM, 14K GOLD, DIAMOND, AND MOTHER OF PEARL TUXEDO CUFFLINKS AND STUD SET, 20TH: A FIVE-PIECE PLATINUM, 14K GOLD, DIAMOND, AND MOTHER OF PEARL TUXEDO CUFFLINKS AND STUD SET, 20TH CENTURY, platinum set with mother of pearl and diamonds (2 mm), and with 14k yellow gold backings, mar

4 days Left

A FIVE-PIECE PLATINUM, 14K GOLD, DIAMOND, AND MOTHER OF PEARL TUXEDO CUFFLINKS AND STUD SET, 20TH

Est. $1,200-$1,600

$600

Simpson Galleries, LLCHouston, TX

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