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Platinum and Diamond Engagement Ring Setting: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 0.48 ctw; STAMPED: PLAT; CONDITION: Pre-owned, Good; ITEM WEIGHT (GRAMS): 7.2 g; MEASUREMENTS: Ring size 7 1/2 with butterfly sizer, Center will fit

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Platinum and Diamond Engagement Ring Setting

Est. $900-$1,200

$600

Hampton Estate AuctionNew York, NY

Diamond Three-Stone Linear Drop Pendant Necklace in Platinum: Platinum three-stone linear drop pendant necklace featuring three vertically set round brilliant-cut diamonds. The pendant is suspended from a platinum ball chain equipped with a spring ring clasp and

1 day Left

Diamond Three-Stone Linear Drop Pendant Necklace in Platinum

Est. $10-$100,000

$40

Gallery 63Atlanta, GA

Tiffany & Co Star Diamond Stud Earrings in Platinum 950 Authentic: Tiffany & Co Star Diamond Stud Earrings in Platinum 950 Authentic Exquisite Tiffany & Co. Star Diamond Earrings crafted in high-quality platinum (950). These elegant stud earrings feature a stunning d

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Tiffany & Co Star Diamond Stud Earrings in Platinum 950 Authentic

Est. $6,227-$8,095

$100

Mynt AuctionsNew York, NY

Art Deco French 18k Gold Platinum & Diamond Brooch: Art Deco French 18k Gold Platinum & Diamond Brooch 1930s, French French platinum-topped 18k gold Art Deco openwork brooch of layered geometric ribbon form, set with old European cut, round, and calibr

May 21, 2026

Art Deco French 18k Gold Platinum & Diamond Brooch

Est. $3,000-$5,000

$1,500

Akiba GalleriesDania Beach, FL

Antique Art Deco Cocktail Ring Platinum 2.51ctw Sapphire Diamond: Antique Art Deco Cocktail Ring Platinum 2.51ctw Sapphire Diamond This stunning Antique Art Deco Cocktail Ring showcases a beautiful combination of sapphires and diamonds, set in solid platinum with wh

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Antique Art Deco Cocktail Ring Platinum 2.51ctw Sapphire Diamond

Est. $4,342-$5,644

$100

Mynt AuctionsNew York, NY

ART DECO PLATINUM BURMA JADEITE RING: ART DECO PLATINUM BURMA JADEITE RING: Art Deco platinum ring contains 1 approximately 3 Ct. Burma (untreated) double cabochon jadeite, 6 fine round brilliant cut diamonds. Jade is translucent. Ring si

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ART DECO PLATINUM BURMA JADEITE RING

Est. $5,500-$8,500

$5,000

Burchard Galleries IncSt. Petersburg, FL

Platinum and 14K White Gold Sapphire and Diamond Pendant: METAL: 14K White Gold; APPROXIMATE TOTAL DIAMOND WEIGHT: 0.90 ctw; GEMSTONES: Sapphire; STAMPED: Bail marked 14K; CONDITION: Pre-owned, Good; ITEM WEIGHT (GRAMS): 9.6 g; MEASUREMENTS: Pendant 2 7/8 in

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Platinum and 14K White Gold Sapphire and Diamond Pendant

Est. $1,200-$1,600

$800

Hampton Estate AuctionNew York, NY

Platinum, Frosted Rock Crystal, Carved Coral, Diamond and Emerald Bouquet Clip-Brooch: Frosted rock crystal vase, carved coral flowers and leaves, one oval sapphire, one emerald-cut emerald and 2 oval cabochon emeralds, 11 emerald beads, 52 round diamonds ap. 3.00 cts., 9 small round di

May 21, 2026

Platinum, Frosted Rock Crystal, Carved Coral, Diamond and Emerald Bouquet Clip-Brooch

Est. $2,000-$3,000

$1,000

DOYLE Auctioneers & AppraisersNew York, NY

GIA Certified Platinum Three Stone Ring With Ceylon Sapphire and Old Mine Diamonds: GIA Certified Platinum Three Stone Ring With Ceylon Sapphire and Old Mine Diamonds This vintage platinum three-stone cocktail ring features a certified 3.42 carat natural Ceylon sapphire with a cushio

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GIA Certified Platinum Three Stone Ring With Ceylon Sapphire and Old Mine Diamonds

Est. $18,174-$23,626

$100

BidhausNew York, NY

Platinum and Diamond Tennis Bracelet 1.00ctw: Diamond tennis bracelet crafted in 850 platinum featuring a continuous line of round brilliant-cut diamonds. The diamonds are individually set in square four-prong box settings and secured with an int

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Platinum and Diamond Tennis Bracelet 1.00ctw

Est. $10-$100,000

$70

Gallery 63Atlanta, GA

Art Deco Platinum Diamond Ring: Art Deco Platinum & Diamond Ring Early 20th Cent. Art deco era platinum ring, featuring a continuous row of small round brilliant cut diamonds set within square shaped links. The design is accented wi

May 21, 2026

Art Deco Platinum Diamond Ring

Est. $400-$600

$225

Akiba GalleriesDania Beach, FL

Art Deco Red Glass, Platinum, and Chrome Cocktail Serving Set: Art Deco Red Glass, Platinum, and Chrome Cocktail Serving Set.. Comprising three slightly tapered cylindrical glass shakers with domed chrome covers and capped pourers, one cover stepped and the other

3 days Left

Art Deco Red Glass, Platinum, and Chrome Cocktail Serving Set

Est. $400-$600

$200

Michaan's AuctionsAlameda, CA

Three-Stone Platinum Ring with Diamonds and Sapphires: Three-Stone Platinum Ring with Diamonds and Sapphires This platinum ring features a three-stone design with a central diamond of approximately 2.40 carats, complemented by two side diamonds totaling a

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Three-Stone Platinum Ring with Diamonds and Sapphires

Est. $24,154-$31,400

$100

Mynt AuctionsNew York, NY

Platinum Sapphire and Diamond Band Ring: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 0.50 ctw; GEMSTONES: Sapphire; STAMPED: PLAT, ECH; CONDITION: Pre-owned, Good; ITEM WEIGHT (GRAMS): 5.4 g; MEASUREMENTS: Ring size 5; Diamonds and ge

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Platinum Sapphire and Diamond Band Ring

Est. $600-$800

$400

Hampton Estate AuctionNew York, NY

ART DECO PLATINUM DIAMOND & BLUE SAPPHIRE BRACELET: Ladies' platinum art-deco diamond and sapphire bracelet consisting of 95 round cut natural diamonds with a total weight of 7.00cts and 55 French cut blue sapphires with a total weight of 5.75cts. Gros

Jun 10, 2026

ART DECO PLATINUM DIAMOND & BLUE SAPPHIRE BRACELET

Est. $10,000-$15,000

$5,000

Dan Morphy AuctionsDenver, PA

Platinum, Emerald and Diamond Straightline Bracelet: 25 square-cut emeralds ap. 4.65 cts., 25 round diamonds ap. 2.50 cts., ap. 16.2 dwts. Length 6 3/4 inches.

May 21, 2026

Platinum, Emerald and Diamond Straightline Bracelet

Est. $4,000-$6,000

$2,000

DOYLE Auctioneers & AppraisersNew York, NY

Platinum Paraiba Tourmaline and Diamond Cluster Cocktail Ring: Natural Paraiba tourmaline and diamond cluster cocktail ring in platinum. The 0.17 carat oval-cut neon blue-green center stone is confirmed by laboratory analysis to contain copper and manganese, acce

1 day Left

Platinum Paraiba Tourmaline and Diamond Cluster Cocktail Ring

Est. $10-$100,000

$20

Gallery 63Atlanta, GA

Art Deco Platinum 14k Gold Diamond Turquoise Brooch: Art Deco Platinum 14k Gold Diamond Turquoise Brooch Early 20th Cent. Art deco brooch, with elongated navette form, crafted in 14k gold with a platinum topped front. Three natural turquoise cabochon st

May 26, 2026

Art Deco Platinum 14k Gold Diamond Turquoise Brooch

Est. $1,500-$3,000

$1,000

Akiba GalleriesDania Beach, FL

Wasler Wald Art Deco 18K Platinum Diamond Clip Earrings 20.40 Ct: Wasler Wald Art Deco 18K Platinum Diamond Clip Earrings 20.40 Ct These exquisite Wasler Wald Art Deco clips are crafted from 18K gold and platinum, showcasing a total diamond weight of approximately 2

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Wasler Wald Art Deco 18K Platinum Diamond Clip Earrings 20.40 Ct

Est. $21,515-$27,969

$100

Mynt AuctionsNew York, NY

Platinum Pearl and Diamond Bypass Ring: METAL: Platinum; APPROXIMATE TOTAL DIAMOND WEIGHT: 0.24 ctw; GEMSTONES: Pearls approx. 11.00 mm in diameter; TESTED: Platinum; CONDITION: Pre-owned, Very Good; ITEM WEIGHT (GRAMS): 12.92 g; MEASUREMEN

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Platinum Pearl and Diamond Bypass Ring

Est. $1,000-$1,300

$650

Hampton Estate AuctionNew York, NY

Tanzanite, Diamond, Platinum, 18k White Gold Pendant Necklace: Tanzanite, Diamond, Platinum, 18k White Gold Pendant Necklace. Featuring one triangular-cut tanzanite weighing approximately 6.55 cts., accented by thirty-nine full-cut diamonds weighing a total of ap

3 days Left

Tanzanite, Diamond, Platinum, 18k White Gold Pendant Necklace

Est. $1,000-$1,500

$500

Michaan's AuctionsAlameda, CA

Platinum, Carved Sapphire, Ruby and Diamond Leaf Clip-Brooch: One carved sapphire leaf ap. 29.08 x 16.51 x 4.75 mm., 17 round diamonds ap. 1.05 cts., single-cut diamonds, rectangular and fancy-shaped rubies, ap. 14.5 dwts. With GIA report no. 6233851908 stating

May 21, 2026

Platinum, Carved Sapphire, Ruby and Diamond Leaf Clip-Brooch

Est. $2,000-$3,000

$1,000

DOYLE Auctioneers & AppraisersNew York, NY

Jewelry. 2 pairs of earrings Platinum & 14kt, pair of screw back opal platinum earrings, 2.60 grams,: Jewelry. 2 pairs of earrings Platinum & 14kt, pair of screw back opal platinum earrings, 2.60 grams, hallmark 900, & pair of tested 14k yellow gold post opal & small diamond chip earrings, 4 grams.

6 days Left

Jewelry. 2 pairs of earrings Platinum & 14kt, pair of screw back opal platinum earrings, 2.60 grams,

Est. $110-$1,000

$100

Hudson Valley Auctioneers LLC Beacon NYBeacon, NY

Curtis, Edward S. (1868-1952), photographer. A pair of works, comprising two platinum photographs of: Curtis, Edward S. (1868-1952), photographer. A pair of works, comprising two platinum photographs of Native American subjects. Leschi. Signed lower left in the negative by Curtis. 7 5/8 x 5 7/8 in. pl

3 days Left

Curtis, Edward S. (1868-1952), photographer. A pair of works, comprising two platinum photographs of

Est. $800-$1,200

$400

Freeman'sPhiladelphia, Chicago, IL

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