18k Hallmarked
542
to
2,984
27,420
18,217
26,103
17,137
11,897
6,676
5,918
3,633
3,232
3,116
3,100
2,871
2,139
2,076
1,896
1,283
977
948
835
730
532
500
490
474
204
196
176
146
136
135
78
45
44
42
26
22
21
20
19
18
16
10
8
7
6
6
5
4
4
3
3
3
2
1
1
1
1
1
4,572
2,059
2,047
1,440
406
Sort By
Sapphire Fully Staffed Band Ring 18 K
Located in Bad Kissingen, DE
18k
hallmarked 18k
4,96 ct Sapphire fully staffed
wide 5 mm
size 62
6,4 grams
Category
21st Century and Contemporary German Band Rings
Materials
Sapphire, 18k Gold
18K White Gold Vintage Engraved Wedding Band
Located in Atlanta, GA
Year: 1930s
Item Details:
Ring Size: 6.75
Metal Type: 18K [Hallmarked, and Tested]
Weight: 1.7
Category
Vintage 1930s Art Deco Wedding Rings
Materials
Gold, 18k Gold, White Gold
Vintage 18K White Gold Engraved Wedding Band
Located in Atlanta, GA
Year: 1930s
Item Details:
Ring Size: 6.75
Metal Type: 18K [Hallmarked, and Tested]
Weight: 1.9
Category
Vintage 1930s Art Deco Wedding Rings
Materials
Gold, 18k Gold, White Gold
Antique English Gold and Diamond Double Snake Ring, Hallmarked
Located in New York, NY
in a bypass design, the heads inset with old European cut diamonds, in 18k. Hallmarked London
Category
Antique 1870s English Victorian Band Rings
Materials
Diamond, Gold, 18k Gold
Emerald 2.96carat Certified Natural 18K Solid Gold Hallmark Drop Pendant
Located in Delhi, DL
*Gemstone weight- 2.96ctw
*Metal- Yellow Gold (Solid)
*Metal purity- 18K Hallmark
*Hallmarked- Yes
*Weight
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Emerald, 18k Gold
Free Shipping
W 0.04 in L 0.71 in
18k Gold 0.93 Ct Diamonds & 1.38 Ct Multi Sapphire Omega Back Earrings
Located in Los Angeles, CA
Type: Earrings
Height:20 mm
Width: 9 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
Early 2000s Unknown Clip-on Earrings
Materials
Diamond, Sapphire
18k Gold Pave 0.19 Ct Diamonds & 1.01 Ct Blue Sapphire Flower Earrings
Located in Los Angeles, CA
Type: Earrings
Hight:27 mm
Width: 13 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Drop Earrings
Materials
Diamond, Blue Sapphire
Free Shipping
H 1.07 in W 0.52 in
18 Karat Gold 0.52 Carat Diamonds and 8.50 Carat French Cut Sapphires Bracelet
Located in Los Angeles, CA
Type: Bracelet
Wearable Length: 7"
Width: 6.8 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks
Category
2010s Unknown Link Bracelets
Fancy 0.96 Carat Diamonds 18 Karat White Gold Drop Pendant Charm
Located in Los Angeles, CA
DESCRIPTION
Type: Pendant
Height: 31 mm
Width: 10 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks
Category
2010s Unknown Pendant Necklaces
Materials
Diamond
18 Karat White Gold 0.82 Carat Yellow and White Diamonds Engagement Ring
Located in Los Angeles, CA
Type: Ring
Top: 9 mm
Band Width: 2.25 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Engagement Rings
Materials
White Diamond, Yellow Diamond
18 Karat White Gold 0.36 Carat Baguette Diamonds Chevron Wedding Band Ring
Located in Los Angeles, CA
Type: Band
Top: 4 mm
Band Width: 2.3 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K 750
Category
2010s Unknown Band Rings
Materials
Diamond
18 Karat Gold 2.40 Carat Marquise and Round Invisible Set Diamonds Earrings
Located in Los Angeles, CA
Type: Earring
Height: 33 mm
Width: 10 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 750
Total
Category
2010s Unknown Dangle Earrings
Materials
Diamond
Free Shipping
H 1.3 in W 0.4 in
Asprey Yellow Gold Twisted Wire Link Bracelet
By Asprey
Located in Stamford, CT
gold
Stamped: 18k
Hallmark: Asprey
71.9 grams
Bracelet: 8 Inches
Total length: 8 Inches
Width
Category
Late 20th Century Link Bracelets
Materials
Gold, 18k Gold, Yellow Gold
Cartier Yellow Gold Barbell Double Sided Cufflinks
By Cartier
Located in Stamford, CT
Circa 1940 Cartier 18k Yellow gold barbell double sided cufflinks.
18k yellow gold
Stamped: 18k
Category
Mid-20th Century Cufflinks
Materials
Gold, 18k Gold, Yellow Gold
Domed 18 Karat Yellow Italian Mesh Gold Necklace
Located in Stamford, CT
Handmade rectangular domed mesh Italian 18k yellow gold Cufflinks.
18k Yellow Gold
Stamped: 18k
Category
Mid-20th Century Cufflinks
Materials
Gold, 18k Gold, Yellow Gold
18 Karat White Gold 1.80 Carat Diamonds F VS2 Long Drop Earrings
Located in Los Angeles, CA
Type: Earrings
Hight:63 mm
Width:13 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Drop Earrings
Materials
Diamond
1.23 Carat Diamonds in 18 Karat White Gold Engagement Ring
Located in Los Angeles, CA
Type: Ring
Top: 7.5 mm
Band Width: 2 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 750
Total
Category
2010s Unknown Engagement Rings
Materials
Diamond
IGI Certified Diamond Natural Emerald Diamond Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
- Yellow Gold
Metal purity- 18K (Hallmarked)
Hallmarked- Yes
Gemstone- Emerald (Natural)
Origin- Zambia
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.32 in L 0.56 in
SeidenGang Athena Yellow Gold Hexagon Cufflinks
By SeidenGang
Located in Stamford, CT
stamped: 18k
Hallmark: SG © Athena
23.1 grams
Top to bottom: 23.31mm or .92 inch
Width: 26.88mm or 1.06
Category
21st Century and Contemporary Cufflinks
Materials
18k Gold, Gold, Yellow Gold
IGI Certified Diamond Natural 2.35Ctw Emerald Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gross weight- 1.762grams
Gemstone- Emerald (Natural
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.4 in L 0.75 in
18 Karat White Gold 1.07 Carat Baguette and Round Diamonds Hoop Earrings
Located in Los Angeles, CA
Type: Earring
Height: 34 mm
Width: 4 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 750
Total
Category
2010s Unknown Hoop Earrings
Materials
Diamond
Free Shipping
H 1.34 in W 0.16 in
Tiffany & Co Paloma Picasso Yellow Gold Signature "XO" Brooch
By Paloma Picasso for Tiffany & Co.
Located in Stamford, CT
Tiffany & Co Paloma Picasso signature “XO” 18k yellow gold brooch.
18k yellow gold
Tested: 18k
Category
Late 20th Century Brooches
Materials
Gold, 18k Gold, Yellow Gold
Tiffany & Co. Large Shrimp Gold Clip Post Earrings
By Tiffany & Co.
Located in Stamford, CT
Tiffany & Co large size shrimp design 18k yellow gold clip post earrings.
18k yellow gold
Top to
Category
Mid-20th Century Lever-Back Earrings
Materials
Gold, 18k Gold, Yellow Gold
Yellow Rose White Gold Textured Link Necklace
Located in Stamford, CT
spacers. 18.5 inches.
18k yellow gold
Stamped: 18k
Hallmark: Italy
29.6 grams
Total length: 18.5
Category
Late 20th Century Beaded Necklaces
Materials
Yellow Gold, White Gold, Gold, 18k Gold, Rose Gold
IGI Certified Natural Diamond Emerald Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
weight- 1.750grams
Metal- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gemstone- Emerald (Natural
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.32 in L 0.91 in
Tiffany & Co. Vintage 18 Karat Yellow Gold Onyx Button Cufflinks Great Condition
By Tiffany & Co.
Located in Sherman Oaks, CA
, but "18k" hallmark has been polished off.
Category
Vintage 1950s Cufflinks
Materials
18k Gold, Yellow Gold
Handmade Round Button Style Gold Platinum Cufflinks
Located in Stamford, CT
and Platinum
19.9 grams
Tested: 18k
Stamped: Plat 18k
Hallmark: ©
Top to bottom: 15.63mm or .62 inch
Category
Vintage 1960s Cufflinks
Materials
18k Gold, Yellow Gold, Platinum, Gold
18 Karat White Gold 0.21 Carat Diamonds and 7.98 Carat Ruby Dangle Earrings
Located in Los Angeles, CA
Type: Earrings
Height: 37 mm
Width: 9 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
Early 2000s Unknown Dangle Earrings
Materials
Ruby
Free Shipping
H 1.46 in W 0.36 in
Yellow Gold Gotland Coat of Arms Charm - 18k Enamel Swedish Crown & Shield Ram
Located in Greensboro, NC
Stamps: 18k, hallmarks (worn)
Condition: Pre-Owned
Professionally tested to guarantee metal content.
Category
21st Century and Contemporary Charm Bracelets
Materials
18k Gold, Yellow Gold, Enamel
IGI Certified Natural Diamond cabochon Emerald Diamond Hallmark 18K Gold Pendant
Located in Delhi, DL
:
Item No- E110
Metal- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gemstone- Emerald (Natural
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.2 in L 0.67 in
IGI Certified Diamond Natural Emerald Diamond Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gemstone- Emerald (Natural)
Origin- Zambia
Gemstone
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Emerald, Diamond, 18k Gold
Free Shipping
W 0.2 in L 0.48 in
18 Karat Gold 0.28 Carat Diamonds and 1.84 Carat Pink Sapphire Huggie Earrings
Located in Los Angeles, CA
Type: Earrings
Hight:18 mm
Width:4.7 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
Early 2000s Unknown Stud Earrings
Materials
Pink Sapphire, Diamond
Free Shipping
H 0.71 in W 0.19 in
18 Karat White Gold 0.18 Carat Diamonds and 5.80 Carat Pink Sapphire Earrings
Located in Los Angeles, CA
Type: Earrings
Height:13 mm
Width:18.5 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Clip-on Earrings
Free Shipping
H 0.52 in W 0.73 in
18 Karat Gold 0.24 Carat Diamonds and 6.05 Carat Multi Stones Drop Earring BL124
Located in Los Angeles, CA
Type: Earrings
Hight:42 mm
Width:8 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Drop Earrings
Free Shipping
H 1.66 in W 0.32 in
18 Karat Gold 0.75 Carat Diamonds and 2.66 Carat Blue Sapphire Flower Earrings
Located in Los Angeles, CA
Type: Earrings
Top: 16.5 mm
Band Width: 16.5 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Category
2010s Unknown Clip-on Earrings
Materials
Diamond, Blue Sapphire
Free Shipping
W 0.65 in
White 18 Karat Gold 0.67 Carat Diamonds Bridal Wedding Band Ring
Located in Los Angeles, CA
Type: Ring
Top: 6 mm
Band Width: 4.7 mm
Metal: White Gold
Metal Purity: 18K
Hallmarks: 18K
Total
Category
2010s Unknown Wedding Rings
Stephen Webster Faceted Hematite Crystal Haze White Gold Cufflinks
By Stephen Webster
Located in Stamford, CT
Haze.
2 cushion Hematite, 13.71 x 13.98mm
18k White Gold
Tested and stamped: 18k
Hallmark: SW 13973
Category
21st Century and Contemporary Cufflinks
Materials
Crystal, Hematite, Gold, 18k Gold, White Gold
IGI Certified Natural Diamond Emerald Gold Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gemstone- Emerald (Natural)
Origin- Zambia
Gemstone
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.32 in L 0.56 in
IGI Certified Natural Diamond 1.50Ctw Emerald Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
- Yellow Gold
Metal purity- 18K
Hallmarked- Yes
Gemstone- Emerald (Natural)
Origin- Zambia
Gemstone
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold
Free Shipping
W 0.44 in L 0.91 in
Stunning .25ct White Diamonds 2.66Ctw Emerald Pendant Hallmark 18K Gold Pendant
Located in Delhi, DL
weight- 2.250grams
Metal- Yellow Gold
Metal purity- 18K (Hallmarked)
Hallmarked- Yes
Gemstone- Emerald
Category
2010s Indian Art Nouveau Pendant Necklaces
Materials
Diamond, Emerald, White Diamond, 18k Gold
Free Shipping
W 0.48 in L 1.11 in
Jose Hess .75 Carat Diamond Yellow Gold Band Ring
By Jose Hess
Located in Stamford, CT
, approx. .75cts
18k yellow gold
Ring Size: 7 and sizeable
Stamped: 18k
Hallmark: JoseHess #2001259A
4.9
Category
21st Century and Contemporary Band Rings
Materials
Diamond, Gold, 18k Gold, Yellow Gold
Elizabeth Locke Sapphire Toggle Hammered Yellow Gold Link Bracelet
By Elizabeth Locke
Located in Holland, PA
:18k Hallmark for Elizabeth Locke
*Free Shipping within the United States*
YOUR PRICE: $14,500
Category
2010s American Link Bracelets
Materials
Sapphire, Yellow Gold
Judith Ripka .72 Carat Diamond White Gold Hoop Earrings
By Judith Ripka
Located in Stamford, CT
.
24 round brilliant cut diamonds, approx. .72cts
18k white gold
Stamped: 18k
Hallmark: Judith Ripka
Category
21st Century and Contemporary Hoop Earrings
Materials
Diamond, Gold, 18k Gold, White Gold
Germano 18K Yellow Gold Italian Medusa Earrings #16090
Located in Washington Depot, CT
yellow gold.
Tested 18K.
Hallmark: GERMANO
Weight: 12.85 g/ 8.26 dwt.
Measurements: 16.95 mm X 15.96
Category
20th Century Clip-on Earrings
Materials
Gold, 18k Gold, Yellow Gold, Enamel
Spark 1.46 Carat Sapphire Diamond Gold Cuff Bracelet
By Spark Creations
Located in Stamford, CT
white gold
Tested and stamped: 18k
Hallmark: Spark
7.8 grams
Shape: Oval
Inside dimensions: 2.17 x
Category
21st Century and Contemporary Cuff Bracelets
Materials
Blue Sapphire, Diamond, Sapphire, 18k Gold, White Gold, Gold
Tiffany & Co. Three-Section Long Swirl Gold Dangle Earrings
By Tiffany & Co.
Located in Stamford, CT
style, almost 2 inches top to bottom.
18k yellow gold
26.7 grams
Stamped: 18k
Tested: 18k
Hallmark
Category
Late 20th Century Unknown Dangle Earrings
Materials
Gold, 18k Gold, Yellow Gold
1.50 Carat Diamond Invisible Set Gold Band Ring
Located in Stamford, CT
Invisible set three row princess cut diamond 1.50ct domed band ring in 18k yellow gold.
42
Category
21st Century and Contemporary Dome Rings
Materials
Diamond, 18k Gold, Yellow Gold, Gold
Bielka Diamond Twisted Wire Gold Hoop Earrings
Located in Stamford, CT
: 18k
Hallmark: Bielka
8.3 grams
Top to bottom: 29.97mm or 1.18 inches
Width: 26.5mm or 1.04 inches
Category
21st Century and Contemporary Hoop Earrings
Materials
Diamond, Gold, 18k Gold, White Gold
Gucci 1.45 Carat Diamond Yellow Gold Accordion Necklace
By Gucci
Located in Stamford, CT
: 18k
Hallmark: Gucci
90.0 grams
Top to bottom: 24.7mm or 1 Inch
Width: 78.9mm or 3.1 Inch
Thickness
Category
Mid-20th Century More Necklaces
Materials
Diamond, Gold, 18k Gold, Yellow Gold
.3 Carat Diamond Blue Enamel Yellow Gold Turtle Brooch
Located in Stamford, CT
Diamonds, approx. total weight .03cts, G, SI1
18k yellow gold
Tested and stamped: 18k
Hallmark: PL ©
9.6
Category
Mid-20th Century Brooches
Materials
Diamond, Enamel, Gold, 18k Gold, Yellow Gold
Cellino White Diamond Bow Yellow Gold Brooche
By Cellino
Located in Stamford, CT
: 18k
Hallmark: Cellino
Top to bottom: 42.86mm or 1.69 inches
Width: 52.69mm or 2.07 inches
Depth
Category
Vintage 1940s Brooches
Materials
Diamond, White Diamond, Gold, 18k Gold, Yellow Gold
Tiffany & Co. Onyx Pristine Gold Brooch Pendant
By Tiffany & Co.
Located in Stamford, CT
Tiffany & Co 18k yellow gold black Onyx white Pristine brooch pin pendant. Secure pristine and
Category
Late 20th Century Brooches
Materials
Onyx, Gold, 18k Gold, Yellow Gold
Judith Ripka Freshwater Pearl Yellow Gold Paloma Necklace
By Judith Ripka
Located in Stamford, CT
white gray hue pearls, 14-17mm x 20-23mm
18k yellow gold
Stamped: 18k
Hallmark: JR
Chain: 36 Inches
Category
21st Century and Contemporary More Necklaces
Materials
Pearl, Freshwater Pearl, Gold, 18k Gold, Yellow Gold
Memoire Diamond Gold Bouquet Cluster Stud Earrings
By Memoire
Located in Stamford, CT
Hallmark: Mémoire B 18k .41ct
2.4 grams
Top to bottom: 7.82mm or .31 inch
Width: 7.85mm or .30 inch
Depth
Category
21st Century and Contemporary Stud Earrings
Materials
Diamond, Gold, 18k Gold, White Gold
Tiffany & Co. Citrine Cabochon Gold Clip Post Dome Earrings
By Tiffany & Co.
Located in Stamford, CT
Tested and stamped: 18k
Hallmark: Tiffany & Co Italy
18.8 grams
Top to bottom: 28.66mm or 1.13 inches
Category
Late 20th Century Italian Lever-Back Earrings
Materials
Citrine, Gold, 18k Gold, Yellow Gold
Robin Rotenier .19 Carat Carved Aquamarine Diamond Yellow Gold Pendant Enhancer
By Robin Rotenier
Located in Stamford, CT
yellow gold
Stamped: 18k
Hallmark: RR
8.3 grams
Top to bottom: 80mm or 3 Inches
Width: 12.6mm or .5 Inch
Category
21st Century and Contemporary Necklace Enhancers
Materials
Aquamarine, Diamond, Gold, 18k Gold, Yellow Gold
Ruby Diamond Hinged Bar Link Gold Bracelet
Located in Stamford, CT
. total weight .12cts
18k yellow gold
Tested and stamped: 18k
Hallmark: AC2872
18.6 grams
Length: 6.75
Category
Late 20th Century Link Bracelets
Materials
Diamond, Ruby, 18k Gold, Gold, Yellow Gold
Diamond Gold Filigree Engagement Ring
Located in Stamford, CT
Tested and stamped: 18k
Hallmark: R.S.
2.0 grams
Width at top: 8.85mm
Height at top: 6.05mm
Width at
Category
Vintage 1940s Engagement Rings
Materials
Diamond, Gold, 18k Gold, White Gold
JMP Quartz Rock Crystal Diamond Gold Crystal Ball Necklace
By JMP
Located in Stamford, CT
beads 5.5 – 8mm
18k rose gold
Tested and stamped: 18k
Hallmark: JMP
7.9 grams
Length: 17 inches – Width
Category
21st Century and Contemporary Pendant Necklaces
Materials
Quartz, Crystal, Rock Crystal, Diamond, Gold, 18k Gold, Rose Gold
Cassis .55 Carat Diamond Yellow Gold Heart Bangle Bracelet
By Cassis Jewelry Inc.
Located in Stamford, CT
heart shapes, set along an 18k yellow gold slip on bracelet with twisted gold wire separators. Fits a 7
Category
Late 20th Century Bangles
Materials
Diamond, Gold, 18k Gold, Yellow Gold
- 1
- ...
Get Updated with New Arrivals
Save "18k Hallmarked", and we’ll notify you when there are new listings in this category.
18k Hallmarked For Sale on 1stDibs
On 1stDibs, you can find the most appropriate 18k hallmarked for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Yellow Gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a 18k hallmarked from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. There have been many well-made iterations of the classic 18k hallmarked over the years, but those made by Victor Mayer, Cartier and Tiffany & Co. are often thought to be among the most beautiful. A 18k hallmarked can make for a versatile accessory, but a selection from our variety of 95 Diamond versions can add an especially stylish touch. See these pages for a round cut iteration of this accessory, while there are also brilliant cut cut and old european cut cut versions available here, too. Finding a 18k hallmarked for sale for women should be easy, but there are 84 pieces available to browse for unisex as well as men, too.
How Much is a 18k Hallmarked?
On average, a 18k hallmarked at 1stDibs sells for $1,763, while they’re typically $100 on the low end and $48,000 for the highest priced versions of this item.
More Ways To Browse
Spritzer And Fuhrmann
Tiffany Xo
Pegasus Ring
Paloma Picasso Xo
Bielka Earrings
Garnet Pendant Vintage And Antique Jewellery
Buccellati Pearl Pendant
Vintage Princess 18 K White Gold Ring
Doris Panos Yellow 18k Bracelets
Kurt Wayne Pave Diamond Ring
Cartier Barbell
Tiffany Mabe Ring
Flli Menegatti
Panama Rings
Lux Bond Green
Cartier Yellow Gold Barbell Double Sided Cufflinks
Tiffany Wide Atlas Ring
Tiffany Cobblestone