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Custom Moving 18kt Italian Two Tone Gold 1 Carat of Diamonds Mesh Bar Earrings
Located in Scottsdale, AZ
Diamond Setters. Bearing the hallmark "750" for 18kt gold and featuring a beautiful trembling movement
Category

21st Century and Contemporary Italian Contemporary Dangle Earrings

Materials

Diamond, White Diamond, 18k Gold, White Gold, Yellow Gold

Stylish Mid Century Italian 18k Yellow Gold Oval Vintage Blue Topaz Ring
Located in Kenley surrey, GB
hallmarks, stamped 'Italy 750' 18kt gold This rare antique pocket watch from the 1840s showcases exceptional
Category

Antique Late 19th Century Dome Rings

Tiffany Co. Vintage 18 Karat Sapphire and Diamond Brooch
By Tiffany Co.
Located in Wilmington, DE
Hallmarked: "Tiffany & Co.", "C" (Copyright), "18kt" and "Italy"
Category

Mid-20th Century Italian Brooches

Materials

Diamond, Sapphire, 18k Gold

18K White Gold Enamel Somewhere over the Rainbow Cuff by Elizabeth Raine
Located in London, GB
Hope, Discovery and Enlightenment. DESCRIPTION: Handcrafted from 18 KT White Gold with Fine Rainbow
Category

21st Century and Contemporary British Contemporary Cuff Bracelets

Materials

Agate, Citrine, Onyx, Ruby, 18k Gold, White Gold, Enamel

Tiger Eye and Diamond Gold Pendant
Located in Atlanta, GA
diamond embellishments. Stamped JR 18 CT with three Irish hallmarks for Dublin, 18 KT gold and date letter
Category

Vintage 1970s Irish Necklace Enhancers

Materials

Diamond, 18k Gold

Tiffany Co Paloma Picasso 18k Gold Pin XS OS Brooch Hugs Kisses XXXOOO
By Paloma Picasso for Tiffany Co.
Located in Sherman Oaks, CA
(XXXOOO) Metal: 18KT yellow gold Hallmarks: "Paloma Picasso" "© 1983 Tiffany&Co. 18KT" Dimensions: 2.25 x
Category

Vintage 1980s American Modern Brooches

Materials

Gold, 18k Gold, Yellow Gold

Vienna Carved Amethyst Nephrite Diamond Bunch Violet Brooch Earrings Suite
Located in Napoli, IT
show proudly Further Details Below Metal: 18 Kt gold Hallmarks: Austrian assay and maker Vienna 1922
Category

Vintage 1950s Austrian Contemporary Brooches

Materials

Amethyst, Diamond, Jade, 18k Gold

Superb 1960 Stylish Italian Charm Bracelet 18 Karat Gold
Located in Napoli, IT
of Green Chalcedony for an eye-catching effect of true attraction Hallmarked for 18 KT gold and maker
Category

Vintage 1960s Italian Contemporary Chain Bracelets

Materials

Chalcedony, 18k Gold

Jean Despres French Art Deco Gold Cufflinks
By Jean Despres
Located in New York, NY
. Hallmarked for 18 kt gold with eagle’s head/ one signed J. Despres/ Despres poincon JD goblet. Rectangular
Category

Early 20th Century French Art Deco Cufflinks

Materials

18k Gold

Jean Despres French Art Deco Gold Cufflinks
By Jean Despres
Located in New York, NY
alternating with round corners. Hallmarked for 18 kt gold with eagle’s head/ signed J. Despres/ Despres
Category

Early 20th Century French Art Deco Cufflinks

Materials

18k Gold

Hermès Chaîne d Ancre Gold Bracelet By Georges Lenfant
By Cartier
Located in PARIS, FR
Hermès "Chaîne d'ancre" bracelet in 18Kt yellow gold (hallmark: eagle's head) with an engraved
Category

Vintage 1960s Chain Bracelets

Materials

Gold

Edwardian French 32.50 Ct Aquamarine Briolette 1.20 Ct Old Mine Diamond Earrings
Located in Napoli, IT
Details Below Metal: platinum and 18 Kt gold Hallmarks: French import duty hallmarks Gems: 2 pear
Category

Antique Early 1900s French Edwardian Drop Earrings

Materials

Aquamarine, Diamond, 18k Gold, Platinum

Victorian 1.50 Carat Antique Diamond Gent Cluster Ring
Located in Napoli, IT
Excellent condition, can easily re-size Metal: 18 Kt gold Hallmarks: none/worn Gems: 1 old European cut
Category

Antique 1890s Victorian Signet Rings

Materials

Diamond, 18k Gold

French Art Deco Red Enamel Gold Cufflinks
Located in New York, NY
Circular with circular band of red enamel. French Hallmark for 18kt gold/ maker’s mark
Category

Early 20th Century French Art Deco Cufflinks

Materials

18k Gold, Enamel

Victorian 1.20 Carat Natural No Heat Ruby Diamond Rare Trilogy Ring
Located in Napoli, IT
Below Metal: 18 Kt gold Hallmarks: assay and maker WMcG Gems: 1 round faceted cut natural ruby of
Category

Antique Early 1900s Late Victorian Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

French Victorian Coral Earrings and Brooch Suite
Located in Napoli, IT
contemporary box Further Details Below Metal: 18 Kt gold Hallmarks: French assay and maker Gems: 1 natural
Category

Antique 1840s Early Victorian Dangle Earrings

Materials

Coral, 18k Gold

French Victorian Snake Bangle in Gold, Emerald Diamonds
Located in PARIS, FR
Bangle bracelet in 18Kt yellow gold (hallmark: eagle head) adorned with two snake heads holding an
Category

Antique 1890s Late Victorian Bangles

Materials

Diamond, Emerald, Gold

French Art Deco Sapphire Gold Cufflinks
Located in New York, NY
With a sapphire on both ends of the post and triangles which flip down on each side. Hallmarked
Category

Early 20th Century French Art Deco Cufflinks

Materials

Blue Sapphire, 18k Gold

Flower Gold and Mother-of-Pearl Brooch, circa 1970
Located in Paris, FR
A stunning flower brooch made of yellow 18kt gold (hallmark: owl). The brooch is set with mother
Category

Vintage 1970s Unknown Brooches

Materials

18k Gold

Georgian French Gold Verre Eglomisé Shepherd Portrait Locket
Located in PARIS, FR
18kt yellow gold chain adorned with a locket clasp and holding a 18kt rose gold (hallmark: rooster
Category

Antique 1810s French Georgian Pendant Necklaces

Materials

Gold

18K Gold Citrine Solar Plexus Chakra Ring, by Elizabeth Raine
Located in London, GB
. Gemstone : rose cut citrine 12 x 12mm 18-karat gold Hallmarked London Assay Office 18kt solid gold with
Category

21st Century and Contemporary British Contemporary Fashion Rings

Materials

Citrine, 18k Gold

18K Gold Turquoise Throat Chakra Ring, by Elizabeth Raine
Located in London, GB
12 x 12mm 18-karat gold Hallmarked London Assay Office 18kt solid gold with Elizabeth Raine hallmark
Category

21st Century and Contemporary British Contemporary Fashion Rings

Materials

Turquoise, 18k Gold

18K Gold Green Onyx Heart Chakra Ring, by Elizabeth Raine
Located in London, GB
. Gemstone : cushion cut green onyx 12 x 12mm (stone colour deeper than main image 18-karat gold Hallmarked
Category

21st Century and Contemporary British Contemporary Fashion Rings

Materials

Onyx, 18k Gold

French Art Deco Certified 1, 30 Carat Emerald Ring on White Gold with Diamonds
Located in PARIS, FR
Art Deco ring in 18Kt white gold (hallmark: eagle) set with an emerald cut emerald weighing
Category

Vintage 1930s French Art Deco Cluster Rings

Materials

Diamond, Emerald, White Gold

18K Gold Amethyst Crown Chakra Ring, by Elizabeth Raine
Located in London, GB
. Gemstone : rose cut amethyst 12 x 12mm 18-karat gold Hallmarked London Assay Office 18kt solid gold with
Category

21st Century and Contemporary British Contemporary More Jewelry

Materials

Amethyst, Gold, 18k Gold, Yellow Gold

Rare Edwardian 3.48 Ct NO Heat Ceylon Sapphire 2.25 Ct Diamond Plus Trilogy Ring
Located in Napoli, IT
mounting is finely detailed as for best Edwardian tradition – 18 KT sold gold Excellent condition Sits
Category

Antique Early 1900s Edwardian Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold

Elizabeth Raine 18-Karat Gold Amethyst Crown Chakra Droplet Earrings
Located in London, GB
) Earring dimensions: 30 mm drop Hallmarked London Assay Office 18kt solid gold with Elizabeth Raine
Category

21st Century and Contemporary British Contemporary Drop Earrings

Materials

Amethyst, Gold, 18k Gold, Yellow Gold

Elizabeth Raine 18-Karat Gold Turquoise Throat Chakra Droplet Earrings
Located in London, GB
Hallmarked London Assay Office 18kt solid gold with Elizabeth Raine hallmark. + Turquoise is the healing
Category

21st Century and Contemporary British Contemporary Dangle Earrings

Materials

Turquoise, Gold, 18k Gold, Yellow Gold

18K Gold Amethyst Crown Chakra Pendant Necklace, Elizabeth Raine
Located in London, GB
) Spring Clasp. Hallmarked London Assay Office 18kt solid gold with Elizabeth Raine hallmark. Presented
Category

21st Century and Contemporary British Contemporary Pendant Necklaces

Materials

Amethyst, Gold, 18k Gold, Yellow Gold

18 Karat Gold Amethyst Crown Chakra Droplet Pendant Necklace, Elizabeth Raine
Located in London, GB
: 0.9 mm oval) Spring Clasp. Hallmarked London Assay Office 18kt solid gold with Elizabeth Raine
Category

21st Century and Contemporary British Contemporary Pendant Necklaces

Materials

Amethyst, Gold, 18k Gold, Yellow Gold

Rare Victorian Carlo Giuliano Etruscan Revival Amethyst Locket
By Carlo Giuliano
Located in Napoli, IT
Etruscan revival, reproducing his well know granulation work Large sized locket, 18 Kt solid gold
Category

Antique 1870s British Etruscan Revival Pendant Necklaces

Materials

Amethyst, 18k Gold

Elizabeth Raine 18-Karat Gold Turquoise Throat Chakra Droplet Pendant Necklace
Located in London, GB
long 18-karat gold cable link chain (link size : 0.9 mm oval) Spring Clasp. Hallmarked London
Category

21st Century and Contemporary British Contemporary Pendant Necklaces

Materials

Turquoise, Gold, 18k Gold, Yellow Gold

18k Gold Turquoise Throat Chakra Droplet Pendant Necklace, by Elizabeth Raine
Located in London, GB
inch long 18-karat gold cable link chain (link size : 0.9 mm oval) Spring Clasp. Hallmarked
Category

21st Century and Contemporary British Contemporary Pendant Necklaces

Materials

Turquoise, Gold, 18k Gold, Yellow Gold

Imperial Topaz Amethyst Gold Pin Pendant
Located in Santa Fe, NM
. Hallmarked on reverse 18kt with unknown makers mark.
Category

Late 20th Century Unknown Brooches

Materials

Amethyst, Topaz, 18k Gold

2003 Tiffany Co. Debonaire Collection Circle Button Gold Cufflinks
By Tiffany Co.
Located in Scottsdale, AZ
These superb condition 18kt engravable Tiffany & Co. cufflinks feature the Tiffany & Co. hallmark
Category

20th Century American Contemporary Cufflinks

Materials

18k Gold, Yellow Gold

Diamond Love Yellow Gold Pendant with Magic Diamond Message of Love
By Bellessort
Located in Neung-sur-beuvron, FR
ring and adjusting ring Hallmarked 18kt gold. A gem light is provided. Inspired by his researches on
Category

21st Century and Contemporary British Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold

Diamond Love Yellow Gold Ring with Magic Diamond Message of Love
By Bellessort
Located in Neung-sur-beuvron, FR
bolt ring and adjusting ring Hallmarked 18kt gold. A gem light is provided. Inspired by his researches
Category

21st Century and Contemporary British Contemporary Fashion Rings

Materials

Diamond, White Diamond, Blue Diamond, 18k Gold

Chimento Italian Aig Certifate 18 Kt White Gold, 1.25 Ct Sapphires Diamonds Ring
Located in Valladolid, ES
/I, clarity VS/SI Item weight : 20,92 g Ring size : 14( IT) Gold hallmarks: 18 Kt-750 Excellent
Category

Vintage 1980s Italian Modern Collectible Jewelry

Materials

Gold

Pink Sapphire, Tsavorite Diamonds En Tremblant Lily Flower Brooch 18kt White
Located in Miami, FL
: 28.60 gr Hallmarked 18kt Size: 3” in length & 2” in width
Category

21st Century and Contemporary American Contemporary Brooches

Materials

Diamond, Pink Sapphire, Tsavorite, 18k Gold, White Gold

18 Karat White Gold Diamond Ball Pendant
By Gregory Mikaelian Sons, Inc.
Located in Los Angeles, CA
: PENDANT weight: 9.99 GrS LENGTH: 16-17.99"INCHES hallmark: 18KT"
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Retro Art Nouveau Revival 18 Karat Gold Plique-à-Jour Enamel Butterfly Brooch
Located in Cape May, NJ
Era: Retro 1960's Art Nouveau Revival Hallmarks: 18KT makers mark on antenna is worn
Category

Vintage 1970s Brooches

Materials

18k Gold, Yellow Gold

Peridot Diamond Gold Double Halo Ring
Located in Chevy Chase, MD
. Hallmark: 18KT 750 *Currently a finger size 7.5
Category

21st Century and Contemporary Unknown Modern Fashion Rings

Materials

Diamond, Peridot, 18k Gold

18 Karat Rose Gold 5 Row Flexible Diamond Bracelet
Located in Los Angeles, CA
' haLLMARK: 18KT'
Category

21st Century and Contemporary American Contemporary Link Bracelets

Materials

Diamond, Pink Sapphire, 18k Gold, Rose Gold

Estate Vintage 18 Karat Yellow Gold Green Enamel Globe World Necklace
Located in Scottsdale, AZ
15.00 mm in diameter. The chain measures 16” inches long and the clasp is hallmarked 18Kt Italy. The
Category

20th Century Pendant Necklaces

Materials

18k Gold, Yellow Gold

18 Karat White Gold Pink Sapphire and Diamond Bracelet
Located in Los Angeles, CA
' haLLMARK: 18KT'
Category

21st Century and Contemporary American Contemporary Link Bracelets

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Van Cleef Arpels Angel Skin Coral Braided Gold Band Ring
By Van Cleef Arpels
Located in Southampton, PA
coral 10mm x 8mm Details: Ring Size: 5.5 Width: 14mm Weight: 9.2 grams Stamped Hallmarks
Category

1990s French Band Rings

Materials

Coral, 18k Gold

18k white gold "Heart Shaped" diamond earrings
Located in Los Angeles, CA
hallmark: 18KT
Category

21st Century and Contemporary American Contemporary Stud Earrings

Materials

Diamond, 18k Gold, White Gold

VAN CLEEF ARPELS VCA Vintage Alhambra Diamond Ring
By Van Cleef Arpels
Located in Southampton, PA
diamond VS1 clarity, F color appox. .06ct Hallmarks: 18KT VCA 750 AL0500YG 331 YOUR PRICE: $3,000
Category

Vintage 1980s French Cocktail Rings

Materials

Diamond, 18k Gold

18K Textured Yellow Gold Link Bracelet #15866
Located in Washington Depot, CT
! Size: 6.5" Weight: 17.1 g/ 10.9 dwt Hallmark: 18KT Italy Very good condition, professionally
Category

20th Century Link Bracelets

Materials

Gold, 18k Gold, Yellow Gold

18 Karat White Gold Pink Sapphire and Diamond Ring
Located in Los Angeles, CA
haLLMARK: 18KT'
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Van Cleef Arpels Lapis Lazuli Alhambra Necklace
By Van Cleef Arpels
Located in New York, NY
lapis Lazuli Signed VCA FRANCE, with French hallmarks. 18Kt, with Serial No. 4K629.42 The length is
Category

Vintage 1970s French Artist Chain Necklaces

Materials

Lapis Lazuli, 18k Gold

Antique Victorian 18 Karat Yellow Gold Albert Chain, Sheffield, 1880s
Located in Braintree, GB
hallmarked 18kt gold & Sheffield town stamp Dimensions - Length x Width : 46 x 0.65 cm Total weight : 62
Category

Antique 1880s British Victorian Chain Necklaces

Materials

18k Gold

18 Karat Yellow Gold Ladies Diamond Stud Earrings, circa 1970s
Located in Braintree, GB
18kt yellow gold ladies diamond stud earrings Made in the 1970s Hallmarked 18kt Dimensions
Category

Vintage 1970s Stud Earrings

Materials

Diamond, Yellow Gold

18K Yellow Gold Oval Wide Hoop Earrings #15919
Located in Washington Depot, CT
: 22.97mm X 17.47mm X 7.84mm (.904" X .687" X .308") Weight: 2.82 g/ 1.7 dwt Hallmark: 18KT Italy Milor
Category

20th Century Hoop Earrings

Materials

Gold, 18k Gold, Yellow Gold

TIFFANY CO. 18k Yellow Gold 3 Carat Diamond Bracelet Vintage Circa 1950s
By Tiffany Co.
Located in Beverly Hills, CA
Clarity Hallmark "18 KT" Total Weight: 32.5 DWT/ 50.5 Grams The bracelet has a 14k yellow gold safety that
Category

Vintage 1950s American Retro Retro Bracelets

Materials

Diamond, Yellow Gold

18K Yellow Gold Wide Oval Hoop Earrings #15918
Located in Washington Depot, CT
! Size: 22.99mm X 17.84mm X 7.79mm (.905" X .702" X .306") Weight: 2.56 g/ 1.6 dwt Hallmark: 18KT Italy
Category

20th Century Hoop Earrings

Materials

Gold, 14k Gold, Yellow Gold

18K Yellow White Gold Two Toned Link Bracelet #15864
Located in Washington Depot, CT
Hallmark: 18KT Italy OIC Very good condition, professionally polished. Will be packaged in a gift box or
Category

20th Century Link Bracelets

Materials

Gold, 18k Gold, White Gold, Yellow Gold

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Hallmark 18kt For Sale on 1stDibs

On 1stDibs, you can find the most appropriate hallmark 18kt for your needs in our varied inventory. Frequently made of gold, 18k gold and yellow gold, this item was constructed with great care. Our collection of these items for sale includes 5284 vintage editions and 1391 modern creations to choose from as well. You’re likely to find the perfect hallmark 18kt among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. There have been many well-made iterations of the classic hallmark 18kt over the years, but those made by Cartier, Van Cleef Arpels and Tiffany Co. are often thought to be among the most beautiful. While most can agree that any hallmark 18kt from our collection can easily elevate most outfits, but the choice of a diamond version from the 2749 available is guaranteed to add a special touch to your ensemble. A round cut version of this piece has appeal, but there are also brilliant cut and cabochon versions for sale. There aren’t many items for men if you’re seeking a hallmark 18kt, as most of the options available are for women and unisex.

How Much is a Hallmark 18kt?

On average, a hallmark 18kt at 1stDibs sells for $4,866, while they’re typically $10 on the low end and $550,000 for the highest priced versions of this item.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.