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GIA Certified 5.68 Ct Ceylon Sapphire and Diamond Platinum Ring: GIA Certified 5.68 Ct Ceylon Sapphire and Diamond Platinum Ring This platinum ring features a GIA certified 5.68 carat Ceylon sapphire as the centerpiece, complemented by 28 diamonds with a total weig

6 days Left

GIA Certified 5.68 Ct Ceylon Sapphire and Diamond Platinum Ring

Est. $10,842-$14,094

$100

Mynt AuctionsNew York, NY

Platinum, 0.80ct Color Change Garnet, Diamond Necklace: Estate 0.80ct Color Change Garnet, 0.65ctw Diamond and Platinum 23" Pendant Necklace - This elegant pendant necklace showcases a rare gemstone in a timelessly sophisticated setting. At the center, a 0

May 23, 2026

Platinum, 0.80ct Color Change Garnet, Diamond Necklace

Est. $4,000-$4,500

$600

GWS Auctions Inc.Maitland, FL

PLATINUM RUBY AND DIAMOND RING: Dimensions Inner diameter: 21/32 in (16.8 mm); Weight: 8.4 g Description This elegant ring is crafted in platinum and designed with a sculptural, fan-shaped arrangement of pear-shaped rubies, each set

2 days Left

PLATINUM RUBY AND DIAMOND RING

Est. $4,000-$5,000

$1,000

I&J AuctionRidgewood, NJ

May 31, 2026

NECKLACE PLATINUM SAPPHIRE

Est. $4,725-$6,930

$25

NY Elizabeth Beverly Hills, CA

Platinum 4.09ct Aquamarine & Diamond Split Shank Cocktail Ring: Platinum 4.09ct Aquamarine & Diamond Split Shank Cocktail Ring This stunning cocktail ring features a long emerald cut natural aquamarine, elegantly prong set to showcase its beautiful blue color. The

3 days Left

Platinum 4.09ct Aquamarine & Diamond Split Shank Cocktail Ring

Est. $2,470-$3,211

$100

Mynt AuctionsNew York, NY

PLATINUM 0.41CT DIAMOND AND SAPPHIRE RING: A 1.98 carat Sapphire makes a statement at the center of this elegant ring. Set in Platinum, Diamonds totaling 0.41 carats flank the center stone and offer additional sparkle. A 2mm wide band and a 6m

2 days Left

PLATINUM 0.41CT DIAMOND AND SAPPHIRE RING

Est. $1,600-$6,400

$1,600

Robinhood AuctionsLas Vegas, NV

Rachel Koen Platinum 4.50 cttw Round Cut Diamond Eternity Ring: Rachel Koen Platinum 4.50 cttw Round Cut Diamond Eternity Ring This exquisite eternity band features a stunning array of round cut diamonds, set in luxurious platinum. With a total diamond weight of 4

May 24, 2026

Rachel Koen Platinum 4.50 cttw Round Cut Diamond Eternity Ring

Est. $17,979-$23,372

$100

BidhausNew York, NY

May 23, 2026

TIFFANY CO. FOREVER FULL DIAMOND RING PLATINUM

Est. $18,225-$26,730

$25

NY Elizabeth Beverly Hills, CA

PT950 Platinum Cartier Love Band Size 52 French Wedding Jewelry: PT950 Platinum Cartier Love Band Size 52 French Wedding Jewelry This Cartier Love wedding ring is crafted from PT950 platinum, featuring a sleek silver tone. Designed without a main stone, it showcase

11 hrs Left

PT950 Platinum Cartier Love Band Size 52 French Wedding Jewelry

Est. $1,443-$1,875

$100

Mynt AuctionsNew York, NY

Platinum GIA Certified 3.13 Ct Jade and 48 Diamond Ring: Platinum GIA Certified 3.13 Ct Jade and 48 Diamond Ring This stunning platinum ring features a 3.13 Ct. GIA certified jade center stone, elegantly surrounded by 48 sparkling diamonds. The diamonds hav

11 hrs Left

Platinum GIA Certified 3.13 Ct Jade and 48 Diamond Ring

Est. $2,626-$3,413

$100

Mynt AuctionsNew York, NY

Vintage Platinum Floral Cocktail Ring 4ct Emerald and Diamonds Size 6: Vintage Platinum Floral Cocktail Ring 4ct Emerald and Diamonds Size 6 This exquisite vintage cocktail ring showcases a stunning 2.00 carat oval emerald at its center, embraced by a floral design of 2.

5 days Left

Vintage Platinum Floral Cocktail Ring 4ct Emerald and Diamonds Size 6

Est. $5,941-$7,723

$100

Mynt AuctionsNew York, NY

Demantoid Garnet and Diamond Platinum Necklace Pt950 Pt850: Demantoid Garnet and Diamond Platinum Necklace Pt950 Pt850 This necklace features a demantoid garnet as its centerpiece, set in platinum with a PT950 purity. The necklace is designed in a regular size

3 days Left

Demantoid Garnet and Diamond Platinum Necklace Pt950 Pt850

Est. $1,625-$2,112

$100

Mynt AuctionsNew York, NY

Platinum 1.04ctw Channel Set Diamond Stack Band Ring 7 Stones: Platinum 1.04ctw Channel Set Diamond Stack Band Ring 7 Stones This exquisite Platinum Band Ring features a total carat weight of 1.04ctw, adorned with seven natural genuine diamonds in a stunning carr

3 days Left

Platinum 1.04ctw Channel Set Diamond Stack Band Ring 7 Stones

Est. $2,392-$3,109

$100

Mynt AuctionsNew York, NY

4 days Left

HARRY WINSTON TRIST ONE ROW BAND RING PLATINUM

Est. $4,050-$5,940

$25

NY Elizabeth Beverly Hills, CA

Vintage Art Deco Platinum Star Sapphire Diamond Ring 35.45 Ct: Vintage Art Deco Platinum Star Sapphire Diamond Ring 35.45 Ct This exquisite Art Deco ring showcases a stunning 35.45 Ct. star sapphire, elegantly complemented by approximately 1.25 Ct. of diamonds. C

May 22, 2026

Vintage Art Deco Platinum Star Sapphire Diamond Ring 35.45 Ct

Est. $6,227-$8,095

$100

Mynt AuctionsNew York, NY

4 days Left

TIFFANY&CO. DOTS DIAMOND RING PLATINUM

Est. $2,250-$3,300

$25

NY Elizabeth Beverly Hills, CA

AN 18K GOLD, PLATINUM, TOURMALINE AND DIAMOND CLIP/BROOCH, CIRCA 1950: AN 18K GOLD, PLATINUM, TOURMALINE AND DIAMOND CLIP/BROOCH, CIRCA 1950 Designed as a scroll, set with square step-cut tourmalines and round brilliant-cut diamonds; with maker's mark; estimated total di

6 days Left

AN 18K GOLD, PLATINUM, TOURMALINE AND DIAMOND CLIP/BROOCH, CIRCA 1950

Est. $2,500-$4,500

$2,400

BonhamsLos Angeles, CA

A Rare ERTE Fireflies Cobalt Crystal Vase on Platinum Base, Hallmarked: Fireflies, ERTE (Romain de Tirtoff, 1892 - 1990) Cobalt Crystal Vase on Platinum base (separate), Signed, Circa 1988. Total Size: H 11.25" x D 5". About Artist: Romain de Tirtoff (23 November 1892 - 2

2 days Left

A Rare ERTE Fireflies Cobalt Crystal Vase on Platinum Base, Hallmarked

Est. $600-$1,200

$400

AUCTION ONEBeverly Hills, CA

Platinum Tiffany Wishbone Diamond Pendant Necklace: Platinum Tiffany Wishbone Diamond Pendant Necklace This Tiffany & Co. Diamond Wishbone Pendant Necklace is crafted in solid platinum (PT950) and features a graceful wishbone-shaped pendant, a classic

4 days Left

Platinum Tiffany Wishbone Diamond Pendant Necklace

Est. $6,006-$7,807

$100

BidhausNew York, NY

May 31, 2026

TIFFANY&CO. EARRINGS DIAMOND VICTORIA MINI 950 PLATINUM

Est. $5,550-$8,140

$25

NY Elizabeth Beverly Hills, CA

Art Deco Platinum Brooch with Burma Sapphire and Diamond: Art Deco Platinum Brooch with Burma Sapphire and Diamond This exquisite Art Deco brooch is crafted in platinum and features a stunning combination of Burma sapphires and European-cut diamonds. It show

1 day Left

Art Deco Platinum Brooch with Burma Sapphire and Diamond

Est. $2,561-$3,329

$100

Mynt AuctionsNew York, NY

PLATINUM 2.16CT DIAMOND AND EMERALD RING: A dynamic design makes this luxury ring simply unforgettable. Set in Platinum, it comes to life thanks to a stunning combination of Diamonds totaling 2.16 carats and Emeralds with a total weight of 1.

2 days Left

PLATINUM 2.16CT DIAMOND AND EMERALD RING

Est. $2,400-$9,600

$2,400

Robinhood AuctionsLas Vegas, NV

Pair of Platinum, Approx 1.70ct Diamond, & Black Pearl Swirl Drop Earrings: Pair of Platinum, Approx 1.70ct Diamond, & Black Pearl Swirl Drop Earrings L: 1 3/4", weighs 7.55dwt

4 days Left

Pair of Platinum, Approx 1.70ct Diamond, & Black Pearl Swirl Drop Earrings

Est. $3,000-$4,000

$1,500

BKG Antique MallDeerfield Beach, FL

PLATINUM RUBY AND DIAMOND BAND RING: Dimensions Inner diameter: 43/64 in (17.1 mm); Weight: 11.2 g Description This substantial band ring is crafted in platinum and designed with a bold, tiered composition featuring two parallel rows of

5 days Left

PLATINUM RUBY AND DIAMOND BAND RING

Est. $4,000-$5,000

$1,000

Yakon AuctionsGermantown, MD

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