Skip to main content

Hallmark 18kt

to
267
1,034
582
951
765
604
302
149
139
65
61
60
52
51
50
36
26
16
16
15
14
13
11
9
7
7
6
5
4
4
3
3
2
2
2
2
1
1
1
1
1
62
61
41
34
15
Sort By
Victorian 18kt Gold Silver Ruby, Diamond, and Enamel Necklace
Located in Braintree, GB
regal elegance. The necklace bears a French owl hallmark, indicating 18kt gold import. Gemstones
Category

Antique 1860s Victorian Multi-Strand Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold, Silver, Enamel

Vintage 18KT White Gold Colombian Emerald Diamond Cluster Ring, 1970s
Located in Braintree, GB
ct • Clarity: VVS • Colour: F Specifications • Metal: 18KT White Gold (hallmarked 750) • Era
Category

Vintage 1970s Art Deco Cluster Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Sapphire and Diamond Cluster Cocktail Ring in 18kt Yellow Gold
Located in Braintree, GB
Metal: 18kt Yellow Gold (hallmarked) Ring Size: M (UK) / 6¼ (US) / 52 (EU) Weight: 13 grams Condition
Category

Early 2000s European Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Natural diamond 0.08 carats 18KT Yellow Gold Floral Stackable Ring
Located in Antwerpen, BE
Certificate Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural diamond 0.08 carats 18KT White Gold Floral Stackable Ring
Located in Antwerpen, BE
Certificate Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, White Gold, 18k Gold

Natural Diamond 0.92 carats 18KT White Gold Statement Engagement Ring
Located in Antwerpen, BE
: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Natural diamond 7.00 carats 18KT Yellow Gold Link Bracelet
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to ...
Category

2010s Belgian Modern Tennis Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 2.01 Carats 18KT White Gold Cocktail Ring
Located in Antwerpen, BE
This 18KT white gold cocktail ring is perfect for any party outfit! With its sparkling baguette
Category

2010s Belgian Art Deco Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.51 carats 18KT White Gold Engagement Ring
Located in Antwerpen, BE
Certificate Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.53 cts 18KT Rose Gold Cluster Pendant
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked acc...
Category

2010s Belgian Modern Pendant Necklaces

Materials

Diamond, 18k Gold, Rose Gold

Natural Diamond 2.00 Carat 18KT Rose Gold Tennis Bracelets
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US
Category

2010s European Modern Tennis Bracelets

Materials

Diamond, Rose Gold

Antique French 18kt Gold Bird Brooch with rubies and pearls
Located in Braintree, GB
Antique French 18kt Gold Bird Brooch Hallmarked with Eagle Early 20th century Circa 1920. This
Category

Vintage 1920s French Art Deco Brooches

Materials

Pearl, Ruby, Gold, 18k Gold

18kt Gold Flower Single Cluster Natural Diamonds Engagement Ring
Located in Antwerpen, BE
! Metal: 18kt White Gold Gemstone: Natural Diamonds Shape: Round Brilliant Total Carat Weight: 0.26ct
Category

2010s Belgian Art Nouveau Cluster Rings

Materials

Diamond, Gold, 10k Gold, 18k Gold, White Gold

18kt Gold Flower Single Cluster Natural Diamonds Engagement Ring
Located in Antwerpen, BE
! Metal: 18kt White Gold Gemstone: Natural Diamonds Shape: Round Brilliant Total Carat Weight: 0.16ct
Category

2010s Belgian Art Nouveau Cluster Rings

Materials

Diamond, Gold, 10k Gold, 18k Gold, White Gold

18KT White Gold Natural Diamonds Multi Row Stackable Anniversary Ring
Located in Antwerpen, BE
other rings, consider a baguette and round diamond channel set 18 kt gold band. This exquisite piece
Category

2010s Belgian Art Deco Band Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.12 carats 18KT White Gold Square Cluster Stud Earrings
Located in Antwerpen, BE
crafted in 18 KT White Gold. Each earring showcases a constellation of round-cut diamonds, meticulously
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.50 carats 18KT White Gold Dangling Earrings
Located in Antwerpen, BE
PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law
Category

2010s Belgian Modern Dangle Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.70 Carats 18KT White Gold Cluster Stud Earrings
Located in Antwerpen, BE
The Baguette and Round Diamond 18 KT White Gold Gold Cluster Halo Stud Earrings are the perfect
Category

2010s Belgian Art Nouveau Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.25 carats 18KT Yellow Gold Starburst Cluster Earrings
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, Yellow Gold

18kt Yellow Gold 9.20ct. Oval Cabochon Brazilian Emerald Dome Ring
Located in Braintree, GB
centrepiece, set in a smooth, polished yellow gold band. Made in Circa 1970s. Hallmarked with 18kt gold
Category

Late 20th Century European Dome Rings

Materials

Emerald, Yellow Gold

Natural Diamond 0.16 carat 18KT Yellow gold Band Ring
Located in Antwerpen, BE
PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law
Category

2010s Belgian Art Deco Bridal Rings

Materials

Diamond, Yellow Gold

Natural Diamond 1.45 carats 18KT Yellow Gold Half Eternity Band Ring
Located in Antwerpen, BE
celebration of personal style and enduring elegance. This ring is available in 18KT White Gold / 18 KT Yellow
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 1.45 carats 18KT White Gold Half Eternity Band Ring
Located in Antwerpen, BE
celebration of personal style and enduring elegance. This ring is available in 18KT White Gold / 18 KT Yellow
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.52 Carats 18KT White Gold Statement Engagement Ring
Located in Antwerpen, BE
Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.60 carats 18KT White Gold Cluster Stud Earrings
Located in Antwerpen, BE
and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamonds 0.30. cts 18KT White Gold Stud Earrings
Located in Antwerpen, BE
Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according
Category

2010s Belgian Artisan Stud Earrings

Materials

Diamond, 18k Gold, White Gold, Rhodium

Natural Diamond 1.05 carats 18KT White Gold Cluster Stud Earrings
Located in Antwerpen, BE
products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond4.62 CT 18KT White Gold Classic Cluster Bracelet
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US
Category

2010s European Modern Modern Bracelets

Materials

Diamond, White Gold

Natural Diamond 0.35 carats 18KT White Gold Classic Cluster Earrings
Located in Antwerpen, BE
collection. Crafted in luxurious 18 kt white gold, each earring features a delicate cluster of round-shaped
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.00 carat 18KT White Gold Modern Band Ring
Located in Antwerpen, BE
and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.17 Carats 18KT Yellow Gold Cluster Pendant Chain Necklace
Located in Antwerpen, BE
products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to
Category

2010s Belgian Modern Chain Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.85 carats 18KT White Gold Hoop Huggie Earrings
Located in Antwerpen, BE
diamonds set in gleaming 18 KT White Gold, creating a radiant display of elegance. Featuring a total carat
Category

2010s Belgian Art Deco Hoop Earrings

Materials

Diamond, White Gold

Natural Diamonds 0.80 carats 18KT Yellow Gold Hoop Huggies Earrings
Located in Antwerpen, BE
with brilliant baguette and shimmering round-cut diamonds set in gleaming 18 KT Yellow Gold. Totaling
Category

2010s Belgian Modern Hoop Earrings

Materials

Diamond, 10k Gold, 18k Gold, Yellow Gold

Natural Diamonds 0.75 carats 18KT White Gold Hoop Huggies Earrings
Located in Antwerpen, BE
with brilliant baguette and shimmering round-cut diamonds set in gleaming 18 KT White Gold. Totaling
Category

2010s Belgian Modern Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.37 carats 18KT Yellow Gold Floral Cluster Ring
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US
Category

2010s Belgian Artisan Cluster Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.30 carats 18KT Yellow Gold Floral Stud Earrings
Located in Antwerpen, BE
and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Art Nouveau Stud Earrings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 1.8 carats 18KT White Gold Cocktail Ring
Located in Antwerpen, BE
included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

2010s Belgian Art Deco Cocktail Rings

Materials

Diamond, White Gold, 18k Gold, Gold

Natural Diamond 0.40 Carats 18KT White Gold Solitaire Engagement Ring
Located in Antwerpen, BE
, designed to capture hearts and admiration. Crafted in radiant 18KT White gold, this ring features three
Category

21st Century and Contemporary Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.40 Carats 18KT Yellow Gold Solitaire Engagement Ring
Located in Antwerpen, BE
, designed to capture hearts and admiration. Crafted in radiant 18KT Yellow gold, this ring features three
Category

21st Century and Contemporary Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.40 Carats 18KT Rose Gold Solitaire Engagement Ring
Located in Antwerpen, BE
, designed to capture hearts and admiration. Crafted in radiant 18KT Rose gold, this ring features three
Category

21st Century and Contemporary Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, Rose Gold

Natural Diamond 1.45 carats 18KT White Gold Baguette Wedding Band Ring
Located in Antwerpen, BE
. This ring model is available in 18KT White Gold / 18 KT Yellow Gold: DETAILS: Metal: 18kt White Gold
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.45 carats 18KT Yellow Gold Baguette Wedding Band Ring
Located in Antwerpen, BE
. This ring model is available in 18KT White Gold / 18 KT Yellow Gold: DETAILS: Metal: 18kt Yellow Gold
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 1.30 Carats 18KT White Gold Fine Jewelry Bracelet
Located in Antwerpen, BE
harmonious blend of baguette and round-shaped diamonds. Gorgeously crafted in 18 KT white gold, this
Category

2010s Belgian Art Deco Link Bracelets

Materials

Diamond, White Gold, 18k Gold, Rhodium

Natural Diamond 1.75 carats 18KT White Gold Baguette Hoop Earrings
Located in Antwerpen, BE
An Elegant 18 KT Hoop earring gives a dainty look! Take her breath away with the bold baguette
Category

2010s Belgian Art Nouveau Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.92 Carats 18KT Yellow Gold Statement Cocktain Ring
Located in Antwerpen, BE
: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.50 carats 18KT White Gold Half Hoop Earrings
Located in Antwerpen, BE
princess-cut diamonds, totaling 0.50 carats. Crafted in luxurious 18KT white gold, the setting enhances
Category

2010s Belgian Modern Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.50 carats 18KT White Gold Statement Band Ring
Located in Antwerpen, BE
Included ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked
Category

21st Century and Contemporary Belgian Modern Band Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.25 carats 18KT Yellow Gold Anniversary Wedding Band Ring
Located in Antwerpen, BE
PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law
Category

2010s Belgian Modern Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.40 carats 18KT Rose Gold Cluster Engagement Ring
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according t...
Category

2010s Belgian Modern Cluster Rings

Materials

Diamond, 18k Gold, Rose Gold

Natural Diamond 0.40 carats 18KT Yellow Gold Cluster Engagement Ring
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according t...
Category

2010s Belgian Modern Cluster Rings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.40 carats 18KT White Gold Cluster Engagement Ring
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according t...
Category

2010s Belgian Modern Cluster Rings

Materials

Diamond, 18k Gold, White Gold

Natural diamond 4.25 carats 18KT Yellow Gold Link Baguette Bracelet
Located in Antwerpen, BE
ADDITIONAL PRODUCT INFORMATION: *All our products are graded and 18KT Gold hallmarked according to ...
Category

2010s Belgian Modern Tennis Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.55 carats 18KT White Gold Hoop Huggies Earrings
Located in Antwerpen, BE
and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Art Deco Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 0.55 carats 18KT Yellow Gold Hoop Huggies Earrings
Located in Antwerpen, BE
and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Art Deco Hoop Earrings

Materials

Diamond, 18k Gold, Yellow Gold

Natural Diamond 0.34 carats 18KT Yellow Gold Cluster Stud Earring
Located in Antwerpen, BE
INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically
Category

2010s Belgian Art Deco Stud Earrings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Natural Diamond 0.60 carats 18KT White Gold Cluster Stud Earrings
Located in Antwerpen, BE
graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically sourced materials to transparent
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond 1.00 carats 18KT White Gold Cluster Stud Earrings
Located in Antwerpen, BE
INFORMATION: *All our products are graded and 18KT Gold hallmarked according to EU/UK/US Law. *Ethically
Category

2010s Belgian Modern Stud Earrings

Materials

Diamond, 18k Gold, White Gold

  • 1
  • ...
Get Updated with New Arrivals
Save "Hallmark 18kt", and we’ll notify you when there are new listings in this category.

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.