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6.25 Carat Colombian Emerald and Diamond Platinum Ring: 6.25 Carat Colombian Emerald and Diamond Platinum Ring This platinum ring features an approximately 6.25 carat Colombian emerald as its centerpiece, accented by eight baguette diamonds with a total we

6 days Left

6.25 Carat Colombian Emerald and Diamond Platinum Ring

Est. $39,507-$51,359

$100

Mynt AuctionsNew York, NY

1.95ctw Diamond and Platinum Cross Pendant Necklace: 1.95ctw VS2-SI1/G-H Diamond and Platinum 17" Cross Pendant Necklace - A striking cross pendant measuring 2.0" long by 1.25" wide makes a bold and elegant statement. Set with approximately 1.95 total c

May 23, 2026

1.95ctw Diamond and Platinum Cross Pendant Necklace

Est. $4,500-$5,000

$600

GWS Auctions Inc.Maitland, FL

GIA Certified Platinum Stud Earrings with 2.29 Ct Diamond Pair: GIA Certified Platinum Stud Earrings with 2.29 Ct Diamond Pair This pair of platinum diamond stud earrings features two GIA certified round diamonds. One earring is set with a 2.12 carat diamond of J

5 days Left

GIA Certified Platinum Stud Earrings with 2.29 Ct Diamond Pair

Est. $27,014-$35,118

$100

Mynt AuctionsNew York, NY

Yellow Sapphire and Diamond Halo Ring 18k Gold Platinum GIA GRS Certified 14.22ctw: Yellow Sapphire and Diamond Halo Ring 18k Gold Platinum GIA GRS Certified 14.22ctw This un-used cocktail ring features a large, natural octagonal-cut yellow sapphire weighing 11.47 carats, certified b

May 21, 2026

Yellow Sapphire and Diamond Halo Ring 18k Gold Platinum GIA GRS Certified 14.22ctw

Est. $22,607-$29,389

$100

Mynt AuctionsNew York, NY

Platinum Eternity Ring Set with 40 Diamonds 4.50 Ct F-G VVS-VS: Platinum Eternity Ring Set with 40 Diamonds 4.50 Ct F-G VVS-VS This exquisite Platinum 2 Diamond Eternity Ring Set features a total of 40 sparkling diamonds with an approximate total weight of 4.50 Ct

2 days Left

Platinum Eternity Ring Set with 40 Diamonds 4.50 Ct F-G VVS-VS

Est. $4,862-$6,320

$100

Mynt AuctionsNew York, NY

GIA 1.36ct Spinel VS1 Diamond Platinum Ring: Featured in this lot is this 1.36ct spinel VS1 diamond platinum ring with GIA and AIGL paperwork. The ring features a polished, stamped, and tested platinum construction that is marked as follows: Aar

3 days Left

GIA 1.36ct Spinel VS1 Diamond Platinum Ring

Est. $12,000-$22,000

$1,800

North American Auction Co.Bozeman, MT

4 days Left

AQUAMARINE DESIGN NECKLACE PLATINUM PENDANT

Est. $2,025-$2,970

$25

NY Elizabeth Beverly Hills, CA

Platinum Diamond Bypass Band with 1.02ctw Carre Cut Stones Size 5.5: Platinum Diamond Bypass Band with 1.02ctw Carre Cut Stones Size 5.5 This vintage platinum bypass band ring features a total of 1.02 carats of natural white diamonds, expertly channel set in a striking

2 days Left

Platinum Diamond Bypass Band with 1.02ctw Carre Cut Stones Size 5.5

Est. $2,964-$3,853

$100

BidhausNew York, NY

PLATINUM 1.65CT DIAMOND HEART NECKLACE: A necklace designed to reward closer inspection. This piece treats the heart not as a symbol alone, but as a form shaped by detail and intention. The heart pendant, pave set with diamonds, creates a c

2 days Left

PLATINUM 1.65CT DIAMOND HEART NECKLACE

Est. $2,000-$8,000

$2,000

Robinhood AuctionsLas Vegas, NV

3.67 Carat Old Cushion Diamond Platinum Art Deco Ring Size 6.25: 3.67 Carat Old Cushion Diamond Platinum Art Deco Ring Size 6.25 This Art Deco ring features a 3.67 carat old cushion-cut diamond set in platinum. The center diamond is S-T color with VVS1 clarity. The

5 days Left

3.67 Carat Old Cushion Diamond Platinum Art Deco Ring Size 6.25

Est. $21,710-$28,223

$100

Mynt AuctionsNew York, NY

Tiffany & Co Art Deco Platinum Emerald Diamond Brooch 2.5 inches: Tiffany & Co Art Deco Platinum Emerald Diamond Brooch 2.5 inches This exquisite Art Deco brooch from Tiffany & Co. showcases a stunning combination of platinum, emeralds, and diamonds. Weighing 16.5 g

5 days Left

Tiffany & Co Art Deco Platinum Emerald Diamond Brooch 2.5 inches

Est. $10,712-$13,925

$100

Mynt AuctionsNew York, NY

Platinum Horseshoe Pendant With Diamonds Emerald and Amethyst by Tiffany & Co.: Platinum Horseshoe Pendant With Diamonds Emerald and Amethyst by Tiffany & Co. This authentic Tiffany & Co. charm pendant is crafted in solid platinum and features a sophisticated horseshoe design, sy

May 25, 2026

Platinum Horseshoe Pendant With Diamonds Emerald and Amethyst by Tiffany & Co.

Est. $5,421-$7,047

$100

BidhausNew York, NY

Art Deco Platinum 6.25 Ct Diamond Brooch with 73 Diamonds: Art Deco Platinum 6.25 Ct Diamond Brooch with 73 Diamonds This exquisite Art Deco brooch showcases a stunning design crafted from platinum, featuring a total of 6.25 carats of diamonds. The brooch is

4 days Left

Art Deco Platinum 6.25 Ct Diamond Brooch with 73 Diamonds

Est. $6,084-$7,909

$100

Mynt AuctionsNew York, NY

PLATINUM 4.88CT DIAMOND PEAR RING: A 4.53-carat yellow diamond is the clear star of this piece, valued for the way it holds a warm glow under changing light. The pear-cut center stone is bordered by bezel-set round diamonds, creating a

2 days Left

PLATINUM 4.88CT DIAMOND PEAR RING

Est. $4,000-$16,000

$4,000

Robinhood AuctionsLas Vegas, NV

RETRO 18K GOLD AND PLATINUM EMERALD AND DIAMOND RING: Dimensions Inner diameter: 21/32 in (16.7 mm); Weight: 7.9 g Description A Retro-period ring finely crafted in 18k yellow gold and platinum, set with approximately 1.18 carats of square-cut emeralds a

4 days Left

RETRO 18K GOLD AND PLATINUM EMERALD AND DIAMOND RING

Est. £3,000-£5,000

£1,000

Swanley Auction LTDEngland, UK

Vintage 14k Gold Platinum GIA 19.47ct Aquamarine Diamond Cocktail Ring: Vintage 14k Gold Platinum GIA 19.47ct Aquamarine Diamond Cocktail Ring This exquisite vintage cocktail ring showcases a stunning 19.47ct oval aquamarine, beautifully complemented by old European cut d

6 days Left

Vintage 14k Gold Platinum GIA 19.47ct Aquamarine Diamond Cocktail Ring

Est. $8,580-$11,154

$100

Mynt AuctionsNew York, NY

Platinum Ring With Apple Green Jade Cabochon and Diamond Halo 5.45ct: Platinum Ring With Apple Green Jade Cabochon and Diamond Halo 5.45ct This classic platinum cocktail ring features a striking 4.30 carat natural apple green jade cabochon, accented by a halo of 20 roun

4 days Left

Platinum Ring With Apple Green Jade Cabochon and Diamond Halo 5.45ct

Est. $3,913-$5,086

$100

BidhausNew York, NY

Rachel Koen 2 Piece Diamond Engagement Ring Set Platinum 18K Yellow Gold: Rachel Koen 2 Piece Diamond Engagement Ring Set Platinum 18K Yellow Gold Discover elegance with this stunning Rachel Koen engagement ring set, beautifully crafted in a combination of 18K yellow gold a

4 days Left

Rachel Koen 2 Piece Diamond Engagement Ring Set Platinum 18K Yellow Gold

Est. $4,394-$5,712

$100

BidhausNew York, NY

TIFFANY & CO. PAPER FLOWERS PLATINUM DIAMOND PENDANT NECKLACE: This Tiffany & Co. Paper Flowers necklace balances a soft, feminine aesthetic with sleek sophistication. Set in Platinum, the three-petal floral motifs are elevated by dazzling inset Diamonds. The pen

2 days Left

TIFFANY & CO. PAPER FLOWERS PLATINUM DIAMOND PENDANT NECKLACE

Est. $3,300-$13,200

$3,200

Robinhood AuctionsLas Vegas, NV

May 24, 2026

BLACK?OPAL DIAMOND RING PLATINUM

Est. $9,525-$13,970

$25

NY Elizabeth Beverly Hills, CA

PLATINUM RUBY & DIAMOND RING W/GIA REPORT: Ladies' platinum ruby (1.03ct) and diamond (0.96ctw) ring accompanied by an original GIA ruby report and a AIGL appraisal report with an ERRV of $15,108.00 (See additional website images of reports fo

Jun 10, 2026

PLATINUM RUBY & DIAMOND RING W/GIA REPORT

Est. $2,000-$3,000

$1,000

Dan Morphy AuctionsDenver, PA

Platinum and Diamond Ring Mount: Platinum and Diamond Ring Mount Single cut diamonds weighing approximately 0.60 carat total. Platinum. Ring size 5 1/4. Gross weight: 5.05 dwt. Property of a Private Collection This lot is located in

May 27, 2026

Platinum and Diamond Ring Mount

Est. $500-$700

$250

Freeman'sChicago, IL

Platinum Aquamarine Bracelet from Elsa Peretti Color By The Yard Collection: Platinum Aquamarine Bracelet from Elsa Peretti Color By The Yard Collection This Tiffany & Co. bracelet from the Elsa Peretti Color By The Yard collection features a delicate aquamarine stone set in p

7 hrs Left

Platinum Aquamarine Bracelet from Elsa Peretti Color By The Yard Collection

Est. $3,419-$4,444

$100

BidhausNew York, NY

May 23, 2026

TIFFANY CO. ENCHANTMENT HEART DIAMOND NECKLACE PLATINUM

Est. $2,325-$3,410

$25

NY Elizabeth Beverly Hills, CA

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