Skip to main content

18 Carat Diamond

to
2,203
10,453
8,618
5,899
2,779
904
10,515
1,146
902
1,333
434
6
131
2,071
8,478
115
175
145
150
79
150
141
153
256
282
1
7,678
2,944
64
3,781
1,109
948
819
630
to
8
3
1,940
495
477
262
242
3,833
2,184
569
167
137
131
92
52
24
23
23
16
9
3
1
10,676
10
6,082
3,012
Diamond Bar Dangle Drop Earrings 2.11 Carats 18 Karat White Gold
Diamond Bar Dangle Drop Earrings 2.11 Carats 18 Karat White Gold

Diamond Bar Dangle Drop Earrings 2.11 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Long dangle drop earrings featuring a top diamond bar containing 10 round brilliants weighing 1.05 carats, 14 round brilliance, weighing 0.69 carats and two bottom round brilliants, ...

Category

2010s Contemporary Drop Earrings

Materials

Diamond, White Gold

Four-Row Diamond Bangle 2.26 Carat 18 Karat White Gold
Four-Row Diamond Bangle 2.26 Carat 18 Karat White Gold

Four-Row Diamond Bangle 2.26 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold bangle featuring 172 round brilliants weighing 2.26 carats. Great to stack! Color G-H Clarity SI

Category

2010s American Contemporary Bangles

Materials

Diamond, White Gold

Tahitian Pearl Sapphire and Diamond Earrings 3.87 Carats 18 Karat
Tahitian Pearl Sapphire and Diamond Earrings 3.87 Carats 18 Karat

Tahitian Pearl Sapphire and Diamond Earrings 3.87 Carats 18 Karat

By Harbor Diamonds

Located in New York, NY

18K Yellow Gold earrings featuring two Tahitian pearls measuring 10-11 mm flanked with diamonds, 0.42 carats, blue sapphires, 1.95 carats and green tsavorite, 1.50 carats.

Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Pearl, Blue Sapphire, Tsavorite, 18k Gold

Diamond Hoop Dangle Drop Earrings 0.93 Carats 18 Karat White Gold
Diamond Hoop Dangle Drop Earrings 0.93 Carats 18 Karat White Gold

Diamond Hoop Dangle Drop Earrings 0.93 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18 Karat White gold drop earrings featuring a hoop motif with 24 round brilliants weighing 0.30 carats with a diamond dangle drop of 14 diamonds, 0.63 carats.

Category

2010s Contemporary Dangle Earrings

Materials

Diamond, 18k Gold, White Gold

Diamond South Sea Pearl Drop Earrings 0.70 Carat 18 Karat
Diamond South Sea Pearl Drop Earrings 0.70 Carat 18 Karat

Diamond South Sea Pearl Drop Earrings 0.70 Carat 18 Karat

By Harbor Diamonds

Located in New York, NY

18K White Gold drop earrings featuring 50 round brilliants weighing 0.70 carats with two South Sea Pearls measuring 10-11 MM. Fits perfectly on the ear! Available in all gold & pea...

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, South Sea Pearl, White Gold

Tear Drop Diamond Shape Earrings 2.75 Carats 18 Karat White Gold
Tear Drop Diamond Shape Earrings 2.75 Carats 18 Karat White Gold

Tear Drop Diamond Shape Earrings 2.75 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18 Karat white gold drop earrings featuring a tear drop motif containing 14 larger round brilliants weighing 1.40 carats and 174 smaller diamonds weighing 1.35 carats.

Category

2010s Contemporary Drop Earrings

Materials

Diamond, 18k Gold, White Gold

Five Row Diamond Hoop Earrings 2.37 Carats 18 Karat Yellow Gold
Five Row Diamond Hoop Earrings 2.37 Carats 18 Karat Yellow Gold

Five Row Diamond Hoop Earrings 2.37 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

18 Karat yellow gold earrings featuring five rows of gold and diamond containing 68 diamonds weighing 2.37 carats.

Category

1990s Contemporary Hoop Earrings

Materials

Diamond, 18k Gold, Yellow Gold

7.17 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line
7.17 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

7.17 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

By Hasbani Diamonds

Located in London, GB

Each stone has a four-claw setting with open gallery and set in 18 Karat White Gold with a British Hallmark. Other Carat weights are also available in 18 Karat Yellow or Rose Gold o...

Category

2010s British Modern Chain Necklaces

Materials

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

13.72 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line
13.72 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

13.72 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

By Hasbani Diamonds

Located in London, GB

An impressive classic Riviera Tennis Necklace a line that features a substantial total Diamond weight of 13.72 Carats in beautifully graduated Round Brilliant Cut gems with a sparkly...

Category

2010s British Modern Chain Necklaces

Materials

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

32 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line
32 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

32 Carat Diamond Tennis Necklace 18 Karat White Gold 4 Claws Set Riviera Line

By Hasbani Diamonds

Located in London, GB

An impressive classic Riviera Tennis Necklace a line that features a substantial total Diamond weight of 32.42 Carats in beautifully graduated Round Brilliant Cut gems with a sparkly...

Category

2010s British Modern Chain Necklaces

Materials

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

Diamond 18 Karat White Gold 0.60 Carat Round Diamond London Stud Drop Earrings
Diamond 18 Karat White Gold 0.60 Carat Round Diamond London Stud Drop Earrings

Diamond 18 Karat White Gold 0.60 Carat Round Diamond London Stud Drop Earrings

By Hasbani Diamonds

Located in London, GB

Modern Solid 18 karat white gold pave set round brilliant cut diamond drop earrings, having 0.60 carat of white diamonds G colour and SI clarity, elegantly presented in a shooting s...

Category

2010s British Modern Drop Earrings

Materials

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

4.70 Carat total natural Diamond Hoop Earrings, 18 K White Gold
4.70 Carat total natural Diamond Hoop Earrings, 18 K White Gold

4.70 Carat total natural Diamond Hoop Earrings, 18 K White Gold

By Ajami Diamonds

Located in Ramat Gan, IL

Oval shaped Diamond Hoops Earrings Total 4.70 Carat in 18 K White Gold Finely arranged round diamonds assorted elegantly in 18 K White Gold hoops for full exposure of 4.70 Carat of ...

Category

21st Century and Contemporary Israeli Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

Diamond Swirl Dome Ring 1.55 Carat 18 Karat Yellow Gold
Diamond Swirl Dome Ring 1.55 Carat 18 Karat Yellow Gold

Diamond Swirl Dome Ring 1.55 Carat 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

18K Yellow gold dome ring featuring 37 round brilliants weighing 1.55 carats. Average Stone: 0.04 cts Color G Clarity SI Size 6.5, Can be sized free of charge

Category

1990s American Contemporary Dome Rings

Materials

Diamond, 18k Gold, Yellow Gold

18 Karat White Gold Tahitian Pearl Diamond Floral Bangle 0.07 Carats
18 Karat White Gold Tahitian Pearl Diamond Floral Bangle 0.07 Carats

18 Karat White Gold Tahitian Pearl Diamond Floral Bangle 0.07 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat White Gold open cuff bangle featuring one Tahitian Pearl measuring 11-12 MM and one floral motif containing 9 diamonds weighing 0.07 Carats.

Category

2010s Contemporary Bangles

Materials

Diamond, Pearl, 14k Gold, White Gold

18 Karat Rose Gold Pink Freshwater Pearl Diamond Earring 0.27 Carats
18 Karat Rose Gold Pink Freshwater Pearl Diamond Earring 0.27 Carats

18 Karat Rose Gold Pink Freshwater Pearl Diamond Earring 0.27 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat Rose Gold stud earring featuring one Pink Freshwater Pearl measuring 12-13 MM with 2 round brilliants weighing 0.17 carats with a diamond halo weighing 0.10 carats.

Category

2010s Contemporary Stud Earrings

Materials

Diamond, Freshwater Pearl, 18k Gold, Rose Gold

Diamond Paperclip Rounded Hoop Earrings 1.52 Carats 18 Karat Yellow Gold
Diamond Paperclip Rounded Hoop Earrings 1.52 Carats 18 Karat Yellow Gold

Diamond Paperclip Rounded Hoop Earrings 1.52 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

18 Karat yellow gold paper clip earring featuring 56 round brilliance weighing 1.52 carats, 5.7 Grams. Color G Clarity SI

Category

2010s Contemporary Hoop Earrings

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified Diamond Stud Earrings 2.10 Carats G-H SI1-2 18 Karat White Gold
GIA Certified Diamond Stud Earrings 2.10 Carats G-H SI1-2 18 Karat White Gold

GIA Certified Diamond Stud Earrings 2.10 Carats G-H SI1-2 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

GIA Certified Diamond stud earrings weighing 2.10 Carats, Color G-H, Clarity SI1-SI2, in 18 Karat White Gold 4 prong Champagne setting.

Category

2010s Contemporary Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Pink Sapphire Diamond Freshwater Pearl Drop Earrings 3.05 Carats 18 Karat
Pink Sapphire Diamond Freshwater Pearl Drop Earrings 3.05 Carats 18 Karat

Pink Sapphire Diamond Freshwater Pearl Drop Earrings 3.05 Carats 18 Karat

By Harbor Diamonds

Located in New York, NY

18 Karat Rose Gold drop earrings featuring 32 pink Sapphires weighing 0.85 Carats and 74 white & champagne color diamonds weighing 2.20 Carats with two pink Freshwater Pearls measuri...

Category

2010s Contemporary Drop Earrings

Materials

Diamond, Freshwater Pearl, Pink Sapphire, 18k Gold, Rose Gold

Diamond Stud Earrings 3.20 Carats K-L SI1-SI2 18 Karat White Gold Champagne Set
Diamond Stud Earrings 3.20 Carats K-L SI1-SI2 18 Karat White Gold Champagne Set

Diamond Stud Earrings 3.20 Carats K-L SI1-SI2 18 Karat White Gold Champagne Set

By Harbor Diamonds

Located in New York, NY

Diamond stud earrings weighing 3.20 Carats in a 3 prong Champagne setting, 18 Karat White Gold.

Category

2010s Contemporary Stud Earrings

Materials

Diamond, White Gold, 18k Gold

Yellow & White Diamond South Sea Pearl Pendant 0.37 Carats 18 Karat
Yellow & White Diamond South Sea Pearl Pendant 0.37 Carats 18 Karat

Yellow & White Diamond South Sea Pearl Pendant 0.37 Carats 18 Karat

By Harbor Diamonds

Located in New York, NY

18 Karat White Gold pendant featuring one South Sea Pearl measuring 14-15 mm with a Radiant cut yellow diamond weighing 0.25 carats flanked with round brilliants weighing 0.12 carats.

Category

2010s Contemporary Pendant Necklaces

Materials

White Diamond, South Sea Pearl, White Gold

Diamond Solitaire Pendant Necklace .18ct Mined H SI Round Brilliant 14K White Go
Diamond Solitaire Pendant Necklace .18ct Mined H SI Round Brilliant 14K White Go

Diamond Solitaire Pendant Necklace .18ct Mined H SI Round Brilliant 14K White Go

Located in Dearborn, MI

Diamond Solitaire Pendant Necklace .18ct Mined H SI Round Brilliant 14K White Gold Features a Genuine Mined Natural .18ct H SI Round Brilliant Cut Diamond 4 Prong Setting 100% ...

Category

2010s Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

18 Karat White Gold Diamond South Sea Drop Earrings 0.16 Carats
18 Karat White Gold Diamond South Sea Drop Earrings 0.16 Carats

18 Karat White Gold Diamond South Sea Drop Earrings 0.16 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat White Gold drop earrings featuring 14 round brilliants weighing 0.16 Carats and two South Sea Pearls measuring 11-12 MM. Can customize pearl to Golden, Pink or Tahitian. D...

Category

2010s Contemporary Drop Earrings

Materials

Diamond, 18k Gold, White Gold

Diamond Row Pearl Drop Earrings 1.46 Carats 18 Karat Yellow Gold
Diamond Row Pearl Drop Earrings 1.46 Carats 18 Karat Yellow Gold

Diamond Row Pearl Drop Earrings 1.46 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

18 Karat yellow earrings featuring 6 rows of 44 round brilliants weighing 1.46 carats and two South Sea pearls measuring 15.2 mm Can be for clipped or clip on earrings.

Category

1990s Contemporary Drop Earrings

Materials

Diamond, Pearl, 18k Gold, Yellow Gold

Tahitian Pearl Diamond Drop Earrings 0.57 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.57 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.57 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring two grey Tahitian Pearls measuring 12-13 mm with 56 round brilliants weighing 0.57 carats. Color G-H Clarity SI Pearls can be changed White, P...

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

5.00ct Emerald Cut Blue Topaz 0.38 Carat Diamond Halo 18 Karat White Gold Ring
5.00ct Emerald Cut Blue Topaz 0.38 Carat Diamond Halo 18 Karat White Gold Ring

5.00ct Emerald Cut Blue Topaz 0.38 Carat Diamond Halo 18 Karat White Gold Ring

By Hasbani Diamonds

Located in London, GB

This beautiful 5.00 Carat emerald cut blue topaz engagement ring with surrounded by a pave set 0.38 carat white round brilliant diamond halo. This ring has a total gem weight of 5.38...

Category

2010s British Modern Engagement Rings

Materials

White Diamond, Topaz, Diamond, 18k Gold, White Gold, Gold

18 Karat White Gold Tahitian Diamond Cluster Drop Earrings 2.70 Carats
18 Karat White Gold Tahitian Diamond Cluster Drop Earrings 2.70 Carats

18 Karat White Gold Tahitian Diamond Cluster Drop Earrings 2.70 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat White Gold drop earrings featuring a cluster of round brilliants weighing 2.70 carats and two Tahitian pearls measuring 13-14 MM Color G-H Clarity SI Comes in South Sea, Go...

Category

2010s Contemporary Drop Earrings

Materials

Diamond, 18k Gold, White Gold

Diamond Barrel Pendant Necklace 0.10 Carats 18 Karat Yellow Gold 3.29 Grams
Diamond Barrel Pendant Necklace 0.10 Carats 18 Karat Yellow Gold 3.29 Grams

Diamond Barrel Pendant Necklace 0.10 Carats 18 Karat Yellow Gold 3.29 Grams

By Harbor Diamonds

Located in New York, NY

The bold, sculpted gold barrel is accented on both edges with a sparkling row of 18 brilliant round diamonds totaling 0.10 carats, offering a perfect balance of shine and sophisticat...

Category

2010s Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Diamond Cluster Round 0.75 Carat Pendant 18 Karat White Gold Daisy Necklace
Diamond Cluster Round 0.75 Carat Pendant 18 Karat White Gold Daisy Necklace

Diamond Cluster Round 0.75 Carat Pendant 18 Karat White Gold Daisy Necklace

By Hasbani Diamonds

Located in London, GB

Pendants in 18 Karat White Gold Diamond Weight: 0.75 Total Carat Head Width : 9 mm (approximately) Height: 16 mm (approximately including bail) Diamond cluster pendants have a rich...

Category

2010s British Modern Pendant Necklaces

Materials

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

Round Brilliant Diamond Circular Hoop Earrings 13.26 Carats 18 Karat Yellow Gold
Round Brilliant Diamond Circular Hoop Earrings 13.26 Carats 18 Karat Yellow Gold

Round Brilliant Diamond Circular Hoop Earrings 13.26 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

A bold and timeless design featuring 28 brilliant-cut diamonds totaling approximately 13.26 carats, each averaging 0.47 carats.

Category

2010s Contemporary Hoop Earrings

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified Diamond Riviere Necklace 17 Carats G-H SI1-2 18 Karat White Gold
GIA Certified Diamond Riviere Necklace 17 Carats G-H SI1-2 18 Karat White Gold

GIA Certified Diamond Riviere Necklace 17 Carats G-H SI1-2 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

GIA Certified Diamond Riviere necklace featuring 109 Round Brilliants weighing 17 Carats, in a 3 prong 14 Karat White Gold. Center Diamond 1.51 Carats GIA G SI2 Two Side Diamonds 0.7...

Category

2010s Contemporary Link Necklaces

Materials

Diamond, 18k Gold, White Gold

18 Karat Rose Gold Morganite Diamond Pearl Drop Earrings 2.80 Carats
18 Karat Rose Gold Morganite Diamond Pearl Drop Earrings 2.80 Carats

18 Karat Rose Gold Morganite Diamond Pearl Drop Earrings 2.80 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat Rose gold drop earrings featuring two Pear shape Morganite weighing 2.04 carats flanked with 50 round brilliants weighing 0.76 carats and two Pink Freshwater Pearls measurin...

Category

2010s Contemporary Drop Earrings

Materials

Diamond, Morganite, Pearl, 18k Gold, Rose Gold

18 Karat White Gold Diamond Tahitian Pearl Drop Earrings 0.58 Carats
18 Karat White Gold Diamond Tahitian Pearl Drop Earrings 0.58 Carats

18 Karat White Gold Diamond Tahitian Pearl Drop Earrings 0.58 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat white gold drop earrings featuring round brilliants weighing 0.58 carats and two Tahitian Pearls measuring 11-12 mm. Color G-H Clarity SI Also Available in Yellow Gold.

Category

2010s Contemporary Drop Earrings

Materials

Diamond, Pearl, 18k Gold, White Gold

Round Brilliant Diamond Bezel Tennis Bracelet 5.70 Carat 18 Karat Yellow Gold
Round Brilliant Diamond Bezel Tennis Bracelet 5.70 Carat 18 Karat Yellow Gold

Round Brilliant Diamond Bezel Tennis Bracelet 5.70 Carat 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

18 Karat yellow gold tennis bracelet featuring 35 Round Brilliants weighing 5.70 Carats.

Category

2010s Contemporary Tennis Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Pear Shape Diamond Cluster Floral Earrings 3.15 Carats 18 Karat White Gold
Pear Shape Diamond Cluster Floral Earrings 3.15 Carats 18 Karat White Gold

Pear Shape Diamond Cluster Floral Earrings 3.15 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18 Karat white gold cluster floral earrings featuring 10 pear shape diamonds weighing 3.15 carats.

Category

2010s Contemporary Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Diamond Cluster Round 0.33 Carat Pendant 18 Karat White Gold Flower Necklace
Diamond Cluster Round 0.33 Carat Pendant 18 Karat White Gold Flower Necklace

Diamond Cluster Round 0.33 Carat Pendant 18 Karat White Gold Flower Necklace

By Hasbani Diamonds

Located in London, GB

Pendants in 18 Karat White Gold Diamond Weight: 0.33 Total Carat Head Width : 7 mm (approximately) Height: 13 mm (approximately including bail) Diamond cluster pendants have a rich...

Category

2010s British Modern Pendant Necklaces

Materials

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

Diamond Cluster Round 0.50 Carat Pendant 18 Karat White Gold Daisy Necklace
Diamond Cluster Round 0.50 Carat Pendant 18 Karat White Gold Daisy Necklace

Diamond Cluster Round 0.50 Carat Pendant 18 Karat White Gold Daisy Necklace

By Hasbani Diamonds

Located in London, GB

Pendants in 18 Karat White Gold Diamond Weight: 0.50 Total Carat Head Width : 7.7 mm (approximately) Height: 14 mm (approximately including bail) Width: 7 mm Diamond cluster pendan...

Category

2010s British Modern Pendant Necklaces

Materials

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

Tahitian Pearl Diamond Drop Earrings 0.45 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.45 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.45 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring two Grey Tahitian pearls measuring 11-12 mm and 54 round diamonds weighing 0.45 carats.

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

Celebration Round Diamond Engagement Ring 18 Karat White Gold 1.46 Carat
Celebration Round Diamond Engagement Ring 18 Karat White Gold 1.46 Carat

Celebration Round Diamond Engagement Ring 18 Karat White Gold 1.46 Carat

By Celebration Diamond

Located in San Diego, CA

CELEBRATION DIAMOND Style: Solitaire with Accents Serial Number: CEL553801 Metal: 18K White Gold Size: 4.75 (sizable) Total Carat Weight: 1.46 TCW Center Diamond Shape: Round Dia...

Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, White Gold

18 Karat Yellow Gold Diamond Dome Ring 0.60 Carats 17.1 Grams
18 Karat Yellow Gold Diamond Dome Ring 0.60 Carats 17.1 Grams

18 Karat Yellow Gold Diamond Dome Ring 0.60 Carats 17.1 Grams

By Harbor Diamonds

Located in New York, NY

18 Karat Yellow gold dome ring featuring 33 round brilliants weighing approximately 0.60 carats, 17.1 grams.

Category

Early 2000s American Contemporary Dome Rings

Materials

Diamond, 18k Gold, Yellow Gold

Large Size Diamond Flower Stud Earrings 0.56 Carats 18 Karat Yellow Gold
Large Size Diamond Flower Stud Earrings 0.56 Carats 18 Karat Yellow Gold

Large Size Diamond Flower Stud Earrings 0.56 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

Large 18 karat yellow gold flower stud earrings featuring 8 round brilliants weighing 0.56 carats.

Category

2010s Contemporary Stud Earrings

Materials

Diamond, 18k Gold, Yellow Gold

Oval Sapphire Diamond Illusion Tennis Bracelet 11.80 Carats 18 Karat White Gold
Oval Sapphire Diamond Illusion Tennis Bracelet 11.80 Carats 18 Karat White Gold

Oval Sapphire Diamond Illusion Tennis Bracelet 11.80 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White Gold Sapphire & Diamond Line Bracelet Details: • Metal: 18K White Gold • Weight: 15.8 grams • Gemstones: 21 Oval Blue Sapphires totaling approximately 8.69 carats • Di...

Category

2010s Contemporary Tennis Bracelets

Materials

Diamond, Sapphire, 18k Gold, White Gold

18 Karat Tahitian Pearl South Sea Diamond Fashion Ring 0.50 Carats
18 Karat Tahitian Pearl South Sea Diamond Fashion Ring 0.50 Carats

18 Karat Tahitian Pearl South Sea Diamond Fashion Ring 0.50 Carats

By Harbor Diamonds

Located in New York, NY

18 Karat white gold fashion ring featuring one Tahitian pearl measuring 12 MM and one South Sea Pearl measuring 9 mm and one round brilliants weighing 0.50 carats. Color G-H Clarity SI

Category

2010s Contemporary Fashion Rings

Materials

Diamond, Pearl, South Sea Pearl, White Gold

Oval Ruby Diamond Illusion Tennis Bracelet 12.65 Carats 18 Karat White Gold
Oval Ruby Diamond Illusion Tennis Bracelet 12.65 Carats 18 Karat White Gold

Oval Ruby Diamond Illusion Tennis Bracelet 12.65 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Details: • Metal: 18K White Gold • Weight: 15.8 grams • Gemstones: 21 Oval Rubies totaling approximately 9.92 carats • Diamonds: 105 Baguette-Cut Diamonds totaling approximately ...

Category

2010s Contemporary Tennis Bracelets

Materials

Diamond, Ruby, 18k Gold, White Gold

Sapphire Diamond Clover Halo Stud Earrings 1.05 Carats 18 Karat White Gold
Sapphire Diamond Clover Halo Stud Earrings 1.05 Carats 18 Karat White Gold

Sapphire Diamond Clover Halo Stud Earrings 1.05 Carats 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Details: • Metal: 18K White Gold • Weight: 2.2 grams • Gemstones: 8 Round Blue Sapphires totaling approximately 0.79 carats • Diamonds: 82 Round Brilliant Diamonds totaling appro...

Category

2010s Contemporary Stud Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Circa 1950s Diamond Collar Necklace 45 Carats 18 Karat Yellow Gold
Circa 1950s Diamond Collar Necklace 45 Carats 18 Karat Yellow Gold

Circa 1950s Diamond Collar Necklace 45 Carats 18 Karat Yellow Gold

By Harbor Diamonds

Located in New York, NY

Circa 1950's, this Vintage Collar necklace features round brilliants weighing approximately 45 Carats. Color G Clarity SI Stunning & Bold!!

Category

Vintage 1950s Contemporary Choker Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Seven-Row Diamond Bangle Bracelet 3.75 Carat 18 Karat White Gold
Seven-Row Diamond Bangle Bracelet 3.75 Carat 18 Karat White Gold

Seven-Row Diamond Bangle Bracelet 3.75 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold bangle featuring seven rows of round brilliants weighing 3.75 carats. Color G-H Clarity SI

Category

2010s American Contemporary Bangles

Materials

Diamond, White Gold

Tahitian Pearl Diamond Drop Earrings 0.37 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.37 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.37 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring two Tahitian pearls measuring 11-12 MM flanked with 68 round brilliants weighing 0.37 carats. Color G-H Clarity SI

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

Three-Row Diamond Bangle Bracelet 2.32 Carat 18 Karat Rose Gold
Three-Row Diamond Bangle Bracelet 2.32 Carat 18 Karat Rose Gold

Three-Row Diamond Bangle Bracelet 2.32 Carat 18 Karat Rose Gold

By Harbor Diamonds

Located in New York, NY

18K Rose gold bangle bracelet featuring three rows of 172 round brilliants weighing 2.32 carats. Color G-H Clarity SI Great for stacking! Available in yellow & white gold.

Category

2010s American Contemporary Bangles

Materials

Diamond, Rose Gold

HARBOR D. Diamond Bangle Bracelet 0.85 Carat 18 Karat Rose Gold
HARBOR D. Diamond Bangle Bracelet 0.85 Carat 18 Karat Rose Gold

HARBOR D. Diamond Bangle Bracelet 0.85 Carat 18 Karat Rose Gold

By Harbor Diamonds

Located in New York, NY

18K Rose gold bangle bracelet featuring 45 round brilliants weighing 0.85 carats. Great for stacking! Available in yellow & white gold.

Category

2010s American Contemporary Bangles

Materials

Diamond, Rose Gold

18.50 Carat Round Diamond 18 KT White Gold Classic Line Tennis Bracelet
18.50 Carat Round Diamond 18 KT White Gold Classic Line Tennis Bracelet

18.50 Carat Round Diamond 18 KT White Gold Classic Line Tennis Bracelet

By Hasbani Diamonds

Located in London, GB

Bespoke 18.50 Carats of spectacular Round Brilliant Cut Diamonds White Color H Clarity SI1 are framed by 18 Karat White Gold for this stunning tennis bracelet.

Category

2010s British Modern Tennis Bracelets

Materials

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

Tahitian Pearl Diamond Drop Earrings 0.43 Carat 18 Karat
Tahitian Pearl Diamond Drop Earrings 0.43 Carat 18 Karat

Tahitian Pearl Diamond Drop Earrings 0.43 Carat 18 Karat

By Harbor Diamonds

Located in New York, NY

18K White Gold drop earrings featuring two Tahitian pearls measuring 10-11 mm with a diamond bar weighing 0.43 carats. Color G-H Clarity SI Comes in yellow and white gold and can cu...

Category

2010s American Contemporary Drop Earrings

Materials

Pearl, White Gold

Tahitian Pearl Diamond Drop Earrings 0.26 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.26 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.26 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring two Tahitian pearls measuring 11-12 mm with 44 round brilliants weighing 0.26 carats. Color G-H Clarity SI

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

Diamond Round Brilliant Drop Earrings 1.78 Carat 18 Karat White Gold
Diamond Round Brilliant Drop Earrings 1.78 Carat 18 Karat White Gold

Diamond Round Brilliant Drop Earrings 1.78 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White Gold earrings featuring 170 round brilliants weighing 1.78 carats. Color G-H Clarity SI

Category

2010s American Contemporary Chandelier Earrings

Materials

Diamond, White Gold

Tahitian Pearl Diamond Lariat Necklace 0.51 Carat 18 Karat White Gold
Tahitian Pearl Diamond Lariat Necklace 0.51 Carat 18 Karat White Gold

Tahitian Pearl Diamond Lariat Necklace 0.51 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold lariat necklace featuring 8 round brilliants weighing 0.31 carats with a grey Tahitian pearl drop measuring 13-14 mm and two round diamonds weighing 0.20 carats. Color...

Category

2010s American Contemporary Drop Necklaces

Materials

Diamond, South Sea Pearl, Pearl, White Gold

Personal Jewellery Diamond 0.10 Carat Initial, E, Ring 18 Karat White Gold
Personal Jewellery Diamond 0.10 Carat Initial, E, Ring 18 Karat White Gold

Personal Jewellery Diamond 0.10 Carat Initial, E, Ring 18 Karat White Gold

By Hasbani Diamonds

Located in London, GB

British Hallmarked. Gemstone: Natural Diamond Total Diamond Weight: 0.10 Carat Dimensions: Band Width 1.5mm Main Stone Shape: Round Metal: 18 Karat White Gold Diamond Quality: G – ...

Category

21st Century and Contemporary Modern Band Rings

Materials

Diamond, White Gold, 18k Gold

Personal Jewellery Diamond 0.10 Carat Initial, L, Ring 18 Karat Rose Gold
Personal Jewellery Diamond 0.10 Carat Initial, L, Ring 18 Karat Rose Gold

Personal Jewellery Diamond 0.10 Carat Initial, L, Ring 18 Karat Rose Gold

By Hasbani Diamonds

Located in London, GB

British Hallmarked. Gemstone: Natural Diamond Total Diamond Weight: 0.10 Carat Dimensions: Band Width 1.5mm Main Stone Shape: Round Metal: 18 Karat Rose Gold Diamond Quality: G – H...

Category

21st Century and Contemporary British Modern Band Rings

Materials

Diamond, Rose Gold

Tahitian Pearl Diamond Drop Earrings 0.30 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.30 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.30 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring two Tahitian pearls measuring 13-14 mm and round brilliants weighing 0.30 carats.

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

Tahitian Pearl Diamond Drop Earrings 0.52 Carat 18 Karat White Gold
Tahitian Pearl Diamond Drop Earrings 0.52 Carat 18 Karat White Gold

Tahitian Pearl Diamond Drop Earrings 0.52 Carat 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

18K White gold drop earrings featuring 62 round brilliants weighing 0.52 carats and two Tahitian pearls measuring 10-11 mm.

Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, White Gold

Bold Vintage 18 Karat Yellow Gold Diamond Ring 1.25 Carats 24.3 Grams
Bold Vintage 18 Karat Yellow Gold Diamond Ring 1.25 Carats 24.3 Grams

Bold Vintage 18 Karat Yellow Gold Diamond Ring 1.25 Carats 24.3 Grams

By Harbor Diamonds

Located in New York, NY

Bold zig-zag diamond motif containing 26 round brilliants weighing 1.25 carats, crafted in 18 karat yellow gold. 24.3 Grams Size 6

Category

Vintage 1970s Contemporary Fashion Rings

Materials

Diamond, 18k Gold, Yellow Gold

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

18 Carat Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 18 carat diamond for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and White Gold. Our collection of these items for sale includes 16174 vintage editions and 32669 modern creations to choose from as well. Finding the perfect 18 carat diamond may mean sifting through those created during different time periods — you can find an early version that dates to the 18th Century and a newer variation that were made as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Finding an appealing 18 carat diamond — no matter the origin — is easy, but Roman Malakov, Meghna Jewels and LB Exclusive each produced a popular version that is worth a look. A round cut version of this piece has appeal, but there are also oval cut and cushion cut versions for sale. If you’re browsing our inventory for a 18 carat diamond, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 18 Carat Diamond?

Prices for a 18 carat diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $19 and can go as high as $135,979,328, while this accessory, on average, fetches $5,813.

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.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.