Results for “18kt”

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18kt. DeLaune Chaumet Diamond, Ruby and Blue Sapphire Watch, Rosalynn Carter Provenance: 20 oval cabochon cut rubies and blue sapphires, four round single cut rubies, 72 round single cut diamonds set in bracelet, bezel is accented with round single cut diamonds, marked on case, "750, 18K,

Feb 25, 2026

18kt. DeLaune Chaumet Diamond, Ruby and Blue Sapphire Watch, Rosalynn Carter Provenance

Est. US$600-US$900

ESTATE 18KT YELLOW & WHITE GOLD DIAMOND SET FLORIFORM BROOCH: Estate 18kt white and yellow gold gemstone brooch, floriform with densely woven gold wire mesh petals, domed white gold center set with seven (seven) round full-cut diamonds, approx 0.04cttw, average

Feb 22, 2026

ESTATE 18KT YELLOW & WHITE GOLD DIAMOND SET FLORIFORM BROOCH

Austin Auction Gallery

Est. US$1,000-US$2,000

TIFFANY & CO. 1980 Angela Cummings Lapis Lazuli Lentil Necklace In 18Kt Gold: Lentils necklace designed by Angela Cummings for Tiffany & Co.This very rare and elegant lentils necklace, was created in New York city by Angela Cummings for Tiffany & Co., back in 1980. This moderni

Feb 18, 2026

TIFFANY & CO. 1980 Angela Cummings Lapis Lazuli Lentil Necklace In 18Kt Gold

Platinum Auction Group

Est. US$6,985-US$7,685

18kt. Emerald and Diamond Pendant on Chain, Rosalynn Carter Provenance: pear faceted cut emerald, approx. 1.00ct., halo of 17 round brilliant cut diamonds, 0.70ctw., stamped "750," yellow gold, box chain, stamped "14kt", yellow gold, 8.1 g Provenance: The Estate of Jimmy

Feb 25, 2026

18kt. Emerald and Diamond Pendant on Chain, Rosalynn Carter Provenance

Est. US$1,000-US$1,500

18kt. Rose Cut Diamond Link Bracelet, Rosalynn Carter Provenance: 14 rose cut diamond slices, assorted shapes, marked "18Kt", yellow gold, 7-1/4 in. length, approx. 10.5mm widest area, 18.6 g Provenance: The Estate of Jimmy and Rosalynn Carter Note: Brunk Auctions m

Feb 25, 2026

18kt. Rose Cut Diamond Link Bracelet, Rosalynn Carter Provenance

Est. US$1,200-US$1,800

ESTATE CUSTOM DESIGN 18KT YELLOW GOLD & 9.50CT OVAL OPAL PENDANT: Estate custom designed 18kt yellow gold pendant, a thin bezel and four tabs secure an oval opal, approx 9.50cts, polished frame with slim bale, rear rim etched K18, stone intact with crazing ( typical

Feb 20, 2026

ESTATE CUSTOM DESIGN 18KT YELLOW GOLD & 9.50CT OVAL OPAL PENDANT

Austin Auction Gallery

Est. US$200-US$400

18kt. Art Deco Diamond Clasp and Multi Strand Pearl Bracelet, Bush Family Provenance: round brilliant cut and straight baguette diamonds in clasp, 1-3/4 in. length, 21.0 mm wide, attached by four strands of 5.5 - 6.5mm white pearls, tests 18kt. white gold, 7 in. total length, 41.6 g Pr

Feb 25, 2026

18kt. Art Deco Diamond Clasp and Multi Strand Pearl Bracelet, Bush Family Provenance

Est. US$1,600-US$2,200

ESTATE 18KT YELLOW GOLD ENAMELED LION HEAD BYPASS RING: Estate 18kt yellow gold bypass ring, modeled with lion's head with open mouth and full mane, enameled scales on the tapering shank, terminating in a tail, marked A76, 750, approx size 6.5-6.75, 12

Feb 20, 2026

ESTATE 18KT YELLOW GOLD ENAMELED LION HEAD BYPASS RING

Austin Auction Gallery

Est. US$800-US$1,500

18kt. Pearl, Emerald and Diamond Floral Form Brooch, Rosalynn Carter Provenance: pyriform drop pearl, approx. 14.0 x 10.0mm, 16 straight baguette cut diamonds, 67 round brilliant cut diamonds, approx. 1.50ctw., seven round brilliant cut emeralds, approx. 0.70ctw., marked "750", ye

Feb 25, 2026

18kt. Pearl, Emerald and Diamond Floral Form Brooch, Rosalynn Carter Provenance

Est. US$1,800-US$2,400

18kt. Vintage Chrysoprase Lariat Style Necklace, Rosalynn Carter Provenance: rondelle beads, approx. 7.0 - 7.5mm, pillar style attaches the drop, marked "750," white gold, approx. 24 in. length with drop, 48.2 g Provenance: The Estate of Jimmy and Rosalynn Carter Note: Brunk A

Feb 25, 2026

18kt. Vintage Chrysoprase Lariat Style Necklace, Rosalynn Carter Provenance

Est. US$1,600-US$2,200

18kt. Blue Sapphire and Diamond Halo Pendant on Two Tone Omega Chain, Rosalynn Carter Provenance: oval faceted blue sapphire, approx. 9.42ct., halo of 26 round brilliant cut diamonds, approx. 0.75ctw., 2.5mm wide omega, stamped "18KT, ITALY", yellow gold and white gold, opposite sides, diamond cut

Feb 25, 2026

18kt. Blue Sapphire and Diamond Halo Pendant on Two Tone Omega Chain, Rosalynn Carter Provenance

Est. US$800-US$1,200

KIESELSTEIN CORD 1984 Signet Intaglio Ring In 18Kt Yellow Gold With Bloodstone: A signet intaglio ring designed by Kieselstein-Cord.This is a massive oversized signet ring created in New York City at the jewelry atelier of Kieselstein-Cord, back in 1984. This vintage ring is an i

Feb 18, 2026

KIESELSTEIN CORD 1984 Signet Intaglio Ring In 18Kt Yellow Gold With Bloodstone

Platinum Auction Group

Est. US$9,450-US$10,395

ESTATE 18KT & 14KT YELLOW GOLD & DIAMOND PENDANT NECKLACE: Estate 18kt yellow and white gold and diamond pendant, sculptural frame centering a single round-cut diamond, approx 0.33cts, average color: H, average clarity: SI1, hallmarked 750, on a 14kt yellow g

Feb 20, 2026

ESTATE 18KT & 14KT YELLOW GOLD & DIAMOND PENDANT NECKLACE

Austin Auction Gallery

Est. US$500-US$1,000

Diamond Spray Pin / Brooch 18Kt.: 18Kt White Gold Diamond Spray Pin / Brooch. Pin Brooch has 38 Diamonds. Diamonds approx weight: 2.75 ctwTotal weight: 8.10 Grams.

Feb 25, 2026

Diamond Spray Pin / Brooch 18Kt.

Pacific Auction House

Est. US$5,000-US$10,000

WEDGWOOD 1880 Cameo Rectangular Desk Box With 18Kt Yellow Gold Accents: A Luxury desk box designed by Wedgwood.This is a magnificent desk box created in London England during the late Victorian Era, back in the 1880's. The fabulous box has been crafted in a rectangular sh

Feb 18, 2026

WEDGWOOD 1880 Cameo Rectangular Desk Box With 18Kt Yellow Gold Accents

Platinum Auction Group

Est. US$8,995-US$9,895

LOT OF (3)- 14KT- 18KT Y.G. JEWELRY: (1) 18KT (750) marked pendant- 2.4 grams (2) 14KT marked earrings, pendant- 6.1 grams USPS Shipping within U.S. $25 plus insurance

Feb 24, 2026

LOT OF (3)- 14KT- 18KT Y.G. JEWELRY

Robert Slawinski Auctioneers, Inc.

Est. US$500-US$1,200

ANGELA CUMMINGS 1985 Clips-On Inlaid Earrings In 18Kt Gold With Rubellites: Clips-on earrings designed by Angela Cummings.This is a very rare and beautiful pair of clips-on earrings created by Angela Cummings at her own atelier in New York City, back in the 1985. These modern

Feb 18, 2026

ANGELA CUMMINGS 1985 Clips-On Inlaid Earrings In 18Kt Gold With Rubellites

Platinum Auction Group

Est. US$12,850-US$14,135

ESTATE 18KT WHITE GOLD, 2.84 CT PINK TOURMALINE & DIAMOND EARRINGS: (pair) Estate 18kt white gold and gemstone earrings, each set with a pear-shaped faceted pink tourmaline, approx 2.84cttw, in a halo surround of round brilliant-cut diamonds, approx 0.95cttw, average

Feb 20, 2026

ESTATE 18KT WHITE GOLD, 2.84 CT PINK TOURMALINE & DIAMOND EARRINGS

Austin Auction Gallery

Est. US$500-US$1,000

ESTATE DESIGNER MICHAEL ALEXANDER 18KT GOLD, PALLADIUM & RUBY RING: Estate designer 18kt rose gold (tested) and palladium ring, Michael Alexander, a central round-cut ruby, approx 0.98ct, flanked by two round brilliant-cut diamonds, approx 0.62cttw, average color: H-I

Feb 20, 2026

ESTATE DESIGNER MICHAEL ALEXANDER 18KT GOLD, PALLADIUM & RUBY RING

Austin Auction Gallery

Est. US$800-US$1,500

TIFFANY & CO. Riviera Bracelet In 18Kt Yellow Gold With 7.68 Cwt Diamonds & Sapphires: A Riviera bracelet designed by Tiffany & Co.This is a colorful riviera line bracelet created in New York City by the American jewelry company of Tiffany & Co. This bracelet was crafted with flexible l

Feb 18, 2026

TIFFANY & CO. Riviera Bracelet In 18Kt Yellow Gold With 7.68 Cwt Diamonds & Sapphires

Platinum Auction Group

Est. US$29,950-US$32,945

Boucheron 1970 Paris Convertible Necklace Bracelets In 18Kt With 48.84 Cts In Diamonds And Rock: Pair of convertible bracelets-necklace designed by Boucheron.Beautiful pair of French pieces created, circa 1970's at the Vassort atelier in Paris. This convertibles bracelets was carefully crafted by

Feb 18, 2026

Boucheron 1970 Paris Convertible Necklace Bracelets In 18Kt With 48.84 Cts In Diamonds And Rock

Platinum Auction Group

Est. US$45,900-US$50,490

18kt Gold Carlo Weingrill Yellow Gold Bracelet TESTED: This bracelet is beautiful. It is fluid and organic and gives a captivating aesthetic like no other. The links are twisted creating a flowing pattern. The rounded, polished surface reflects light in a

7 days Left

18kt Gold Carlo Weingrill Yellow Gold Bracelet TESTED

Est. US$15,000-US$20,000

VAN CLEEF & ARPELS Alhambra Brooch In 18Kt Gold With 2.16 Cwt VVS Diamonds: An Alhambra brooch designed by Van Cleef & Arpels.This is a fabulous large brooch created in Paris by the French jewelry house of Van Cleef & Arpels, back in the 1990's. The brooch has been crafted in

Feb 18, 2026

VAN CLEEF & ARPELS Alhambra Brooch In 18Kt Gold With 2.16 Cwt VVS Diamonds

Platinum Auction Group

Est. US$21,350-US$23,485

US$2,000(1 bid)

18kt. Vintage Tiffany & Co. Double Leaf with Diamond Brooch, Rosalynn Carter Provenance: circa 2003, round brilliant cut diamonds, approx. 0.08ct., high polish and satin finish double leaf motif, marked "2003, Tiffany & Co, 750", yellow gold, 1-1/2 in. length, 1-1/4in. width, accompanied

Feb 25, 2026

18kt. Vintage Tiffany & Co. Double Leaf with Diamond Brooch, Rosalynn Carter Provenance

Est. US$1,600-US$2,200

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