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Rachel Koen Platinum Halo Engagement Ring 1.65ct Emerald Cut Diamond GIA Certified: Rachel Koen Platinum Halo Engagement Ring 1.65ct Emerald Cut Diamond GIA Certified This exquisite Rachel Koen engagement ring features a stunning emerald cut diamond set in a luxurious platinum halo.

7 days Left

Rachel Koen Platinum Halo Engagement Ring 1.65ct Emerald Cut Diamond GIA Certified

Est. $15,301-$19,891

$100

Mynt AuctionsNew York, NY

Vintage platinum yellow diamond ring. Central diamond of a pale yellow color and measuring 4.5mm: Vintage platinum yellow diamond ring. Central diamond of a pale yellow color and measuring 4.5mm diameter. Flanked by 2 small round cut diamonds on each side. Marked platinum. Ring size 6.5. 3.1 grams

May 31, 2026

Vintage platinum yellow diamond ring. Central diamond of a pale yellow color and measuring 4.5mm

Est. $400-$600

$200

Tremont AuctionsSudbury, MA

Art Deco Platinum Eternity Band 3.60 Ct Baguette Diamonds: Art Deco Platinum Eternity Band 3.60 Ct Baguette Diamonds This exquisite Art Deco Eternity Band is crafted in platinum and features a stunning array of 45 baguette diamonds, totaling approximately 3.6

3 days Left

Art Deco Platinum Eternity Band 3.60 Ct Baguette Diamonds

Est. $5,005-$6,506

$100

Mynt AuctionsNew York, NY

Platinum 2.00 Ct Ruby & 44 Diamond Ring F-G VVS-VS: Platinum 2.00 Ct Ruby & 44 Diamond Ring F-G VVS-VS This exquisite Platinum ring showcases a stunning 2.00 Ct. Ruby, beautifully complemented by a total of 44 sparkling Diamonds. The ring features 36 D

4 days Left

Platinum 2.00 Ct Ruby & 44 Diamond Ring F-G VVS-VS

Est. $5,278-$6,861

$100

Mynt AuctionsNew York, NY

Platinum Three-Stone 1.01ctw Diamond Pendant Necklace: Three-stone diamond pendant necklace set in 850 platinum. The vertical drop pendant features three round brilliant-cut diamonds in four-prong basket settings suspended from a fine box chain. The chain

7 days Left

Platinum Three-Stone 1.01ctw Diamond Pendant Necklace

Est. $10-$100,000

$40

Gallery 63Atlanta, GA

May 24, 2026

BOUCHERON SOLITAIRE DIAMOND RING PLATINUM PT950

Est. $4,950-$7,260

$25

NY Elizabeth Beverly Hills, CA

Elegant GIA Certified 1.69ct Platinum Teardrop Diamond Stud Earrings: Elegant GIA Certified 1.69ct Platinum Teardrop Diamond Stud Earrings Elevate your elegance with these stunning teardrop stud earrings, featuring two exquisite GIA certified pear brilliant cut diamonds

4 days Left

Elegant GIA Certified 1.69ct Platinum Teardrop Diamond Stud Earrings

Est. $6,760-$8,788

$100

Mynt AuctionsNew York, NY

Rachel Koen Platinum Diamond Eternity Band 4.00ct 5.75 Signed Stackable: Rachel Koen Platinum Diamond Eternity Band 4.00ct 5.75 Signed Stackable This exquisite Rachel Koen eternity band showcases a luxurious combination of 20 round cut diamonds totaling 1.50 carats and 10

May 23, 2026

Rachel Koen Platinum Diamond Eternity Band 4.00ct 5.75 Signed Stackable

Est. $13,403-$17,423

$100

BidhausNew York, NY

Tiffany & Co. Fire Burst Platinum Diamond Pendant Necklace: Tiffany & Co. Fire Burst Platinum Diamond Pendant Necklace This Tiffany & Co. Platinum Firecracker Diamond Fire Burst Pendant Necklace features a brilliant-cut diamond arrangement set in platinum, cre

6 days Left

Tiffany & Co. Fire Burst Platinum Diamond Pendant Necklace

Est. $5,135-$6,675

$100

Mynt AuctionsNew York, NY

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

Rachel Koen 5.07ct Asscher Cut Diamond Eternity Band Ring Platinum Size 7: Rachel Koen 5.07ct Asscher Cut Diamond Eternity Band Ring Platinum Size 7 Celebrate your commitment with this exquisite Rachel Koen Asscher Cut Diamond Eternity Band Ring, featuring a total of 5.07 ca

5 days Left

Rachel Koen 5.07ct Asscher Cut Diamond Eternity Band Ring Platinum Size 7

Est. $23,231-$30,200

$100

BidhausNew York, NY

1.50ctw Diamond and Platinum Eternity Band Ring: 1.50ctw VS1-SI1/G-H Diamond and Platinum Eternity Band Ring - Timeless sophistication defines this elegant eternity band. Crafted in Platinum, channel-set Diamonds totaling 1.50 carats encircle the en

May 23, 2026

1.50ctw Diamond and Platinum Eternity Band Ring

Est. $4,000-$4,500

$500

GWS Auctions Inc.Maitland, FL

JEWELRY Pt900 Platinum Diamond Ring Size 7: JEWELRY Pt900 Platinum Diamond Ring Size 7 This elegant women's ring features a sparkling diamond set in high-quality Pt900 platinum. Designed in a classic style, the ring is sized for US 7 and showca

4 days Left

JEWELRY Pt900 Platinum Diamond Ring Size 7

Est. $2,886-$3,751

$100

Mynt AuctionsNew York, NY

4 days Left

MELEE DIAMOND PENDANT HEAD PLATINUM MELEE

Est. $3,000-$4,400

$25

NY Elizabeth Beverly Hills, CA

4 days Left

AQUAMARINE DESIGN NECKLACE PLATINUM PENDANT

Est. $2,025-$2,970

$25

NY Elizabeth Beverly Hills, CA

Platinum Art Deco Brooch with 6.20 Carat Diamonds 2.5 Inch: Platinum Art Deco Brooch with 6.20 Carat Diamonds 2.5 Inch This Art Deco platinum brooch features a total of 107 diamonds with an approximate combined weight of 6.20 carats. The diamonds are F-H color

May 25, 2026

Platinum Art Deco Brooch with 6.20 Carat Diamonds 2.5 Inch

Est. $6,838-$8,889

$100

BidhausNew York, NY

2.00ctw Diamond, 10.5mm Turquoise and Platinum Ring: 2.00ctw VS2-SI1/G-H Diamond, 10.5mm Turquoise and Platinum Ring - This striking ring showcases a vibrant 10.5mm turquoise cabochon at its center, prized for its rich, saturated color and smooth, polis

May 30, 2026

2.00ctw Diamond, 10.5mm Turquoise and Platinum Ring

Est. $6,750-$7,250

$800

GWS Auctions Inc.Maitland, FL

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

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

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

3 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

5.60ctw Sapphire, 2.30ctw Diamond, Platinum Earrings: 5.60ctw Blue Sapphire, 2.30ctw VS1-VS2/G-H Diamond and Platinum Earrings - Timeless elegance defines these classic platinum earrings. At the center of each design, richly hued oval-cut Blue Sapphires

May 23, 2026

5.60ctw Sapphire, 2.30ctw Diamond, Platinum Earrings

Est. $11,500-$12,500

$1,500

GWS Auctions Inc.Maitland, FL

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

May 24, 2026

BLACK?OPAL DIAMOND RING PLATINUM

Est. $9,525-$13,970

$25

NY Elizabeth Beverly Hills, CA

THREE ANTIQUE PLATINUM ETERNITY BAND STACKING RINGS.: Three, antique, platinum (tested) eternity band, stacking rings, one set with approx. 1.5 ct. tw., Old European cut, natural diamonds of G-H color and VS clarity, another set with approx. 1.56 ct. tw.

May 27, 2026

THREE ANTIQUE PLATINUM ETERNITY BAND STACKING RINGS.

Est. $700-$1,000

$350

William Smith AuctionsPlainfield , NH

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