What is a 24-carat diamond?

A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.

Is there a three-carat diamond?

Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.

What is a 7 carat diamond worth?

A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.

What is a 9 carat diamond worth?

A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.

What is a 3 carat diamond worth?

A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.

What is 1 carat diamond worth?

Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.

How large is a 3-carat diamond?

In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.

How big is a 12 carat diamond?

The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.

How many carats should a diamond necklace be?

There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.

How rare is a nine-carat diamond?

A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.

What is an 8 carat diamond worth?

An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.

What is a 4 carat diamond worth?

A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.

What is a 6 carat diamond worth?

A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.

What is a 5 carat diamond worth?

A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.

What is the value of a 25 carat diamond?

The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.

Is a 1.5-carat diamond too big?

Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.

Is a two-carat diamond rare?

Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.

Are 2 carat diamond studs too big?

Whether two-carat diamond studs are too big is a matter of personal preference. At this size, each earring will be one carat. If you opt for the classic round brilliant cut, the studs will typically measure around 6.5 millimeters in diameter, which is a little more than half the size of a dime. Find a wide range of diamond stud earrings on 1stDibs.

Are 1.3-carat diamond earrings too small?

Whether 1.3-carat diamond earrings are too small is a matter of personal opinion. A pair of earrings with a total carat weight of 1.3 is considered to be medium-sized. The smallest diamond earrings are around 0.25 carats, while the largest are 1.5 carats or more. Explore a wide range of diamond earrings on 1stDibs.

Are half-carat diamond studs too small?

Whether half-carat diamond studs are too small is a matter of personal opinion. A pair of diamond studs with a total carat weight of 0.5 usually consists of two 0.25-carat earrings. Many jewelry makers offer studs as small as 0.13 carats, so many people consider half-carat diamond studs to be medium-sized. On 1stDibs, shop a collection of antique and vintage diamond stud earrings.

Eight Carat Diamond

Platinum And Diamond Bar Brooch

Antique Diamond And Platinum Ring 1920

Screw Back Clip On Earring

1920 Platinum Two Stone Ring

Diamond Collet

Three Stone Drop Diamond Necklace

Two Stone Diamond Twist Ring

1920s Platinum Diamond Brooch

GIA and IGI Certified 0.80 Carat Diamond Eight-Stone Half Band Gold Ring

$5,800

GIA and IGI Certified 0.80 Carat Diamond Eight-Stone Half Band Gold Ring

By Diamond Stars Jewelry, Inc.

Located in New York, NY

Very Beautiful Half Diamond Band Ring The ring is 14K Rose Gold There are 8 Round Cut Diamonds prong set There are 0.80 Carats In Diamonds G SI2/I1 The ring is a size 6.5, sizable. T...

Category

20th Century American Contemporary Band Rings

Materials

Diamond, White Diamond, Gold, 14k Gold, Rose Gold

One Carat "Bumps" Contemporary Eternity Band in Platinum with Eight Diamonds

$2,480

One Carat "Bumps" Contemporary Eternity Band in Platinum with Eight Diamonds

By Eytan Brandes

Located in Sherman Oaks, CA

Eytan Brandes has been making this ring for a number of years, using gold or platinum. It's an eternity band because the stones are set all around the ring, but it's a little more c...

Category

2010s American Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Roman Malakov 4.98 Carats Eight Cushion Cut Yellow Diamond Chandelier Earrings

$38,000

Roman Malakov 4.98 Carats Eight Cushion Cut Yellow Diamond Chandelier Earrings

By Roman Malakov

Located in New York, NY

Yellow Diamonds weigh 4.98 carats total; white diamonds weigh 4.41 carats total.

Category

21st Century and Contemporary American Contemporary Chandelier Earrings

Materials

Yellow Diamond, 18k Gold, White Gold

Incredible Eight Carat Certified Ruby and Diamond Set in Platinum

$143,750

Incredible Eight Carat Certified Ruby and Diamond Set in Platinum

Located in New York, NY

Beautiful oval 8.06 carat ruby set in a handmade micro pave diamond mounting with special cut side diamonds. 1.56 carats of diamonds set in platinum. Pictures do not do this ring j...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

Roman Malakov 4.74 Carats Oval Cut Ruby & Diamonds Halo Eight Stone Wedding Band

$11,650

Roman Malakov 4.74 Carats Oval Cut Ruby & Diamonds Halo Eight Stone Wedding Band

By Roman Malakov

Located in New York, NY

A fascinating gemstone wedding band eight stone style showcasing a row of vibrant oval cut rubies weighing 4.74 carats total, surrounded by brilliant round diamonds in a halo design ...

Category

21st Century and Contemporary American Contemporary Band Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Victorian 12.50 Carats Total Old European Cut Diamond Eight Point Star Brooch

$58,000

Victorian 12.50 Carats Total Old European Cut Diamond Eight Point Star Brooch

Located in New York, NY

A diamond star brooch of 49 old European cut diamonds weighing approximately 12.50 carats total, set on an antique-style prong setting. Accented with a silver topped gold mounting. C...

Category

Antique Late 19th Century British Victorian Brooches

Materials

Diamond, Gold, Silver

2.5 Carat Diamond Hoop 14 Karat White Gold Drop Infinity Eight Huggie Earrings

$5,200Sale Price|20% Off

2.5 Carat Diamond Hoop 14 Karat White Gold Drop Infinity Eight Huggie Earrings

By Galt & Bro. Jewelers

Located in Tysons, VA

2.5 Carat Diamond Hoop 14 Karat White Gold Drop Infinity Eight Huggie Earrings 14 Karat White Gold 2.50 CT Diamond of F Color, VS1 Clarity

Category

21st Century and Contemporary American Modern Drop Earrings

Materials

Diamond, 18k Gold, White Gold

Eight Row 1.32 Carat Pave Diamond Cage Stud Earrings in 18k Solid White Gold

$7,854 / set

Eight Row 1.32 Carat Pave Diamond Cage Stud Earrings in 18k Solid White Gold

By VR Jewels

Located in New York, NY

Eight Row 1.32 Carat Pave Diamond Cage Stud Earrings in 18K Gold to make a statement with your look.

Category

21st Century and Contemporary American Modernist Stud Earrings

Materials

Diamond, Gold, 18k Gold, White Gold

5.10 Carat Mozambique Ruby 5.38 Carat Diamond 18k Yellow Gold Drop Earrings

$13,614

5.10 Carat Mozambique Ruby 5.38 Carat Diamond 18k Yellow Gold Drop Earrings

Located in Jesmond, Newcastle Upon Tyne

Ruby Quality Origin Mozambique Cut Calibre Creation Natural Content 5.10 carats Diamond Quality Feature Diamond One Color M Clarity VS2 Cut Marquise Content 0.65 carat Dimensions 8....

Category

Vintage 1940s Unknown Art Deco Drop Earrings

Materials

Diamond, Ruby, White Gold, Yellow Gold

10K Yellow Gold 3.0 Cttw Diamond Eight-Row Bypass Crossover Statement Band Ring

$3,386 / item

10K Yellow Gold 3.0 Cttw Diamond Eight-Row Bypass Crossover Statement Band Ring

Located in New York, NY

Multi rows of round, prong-set diamonds in a bypass motif create this exquisitely designed ring of gleaming 10k yellow gold that makes this piece a wardrobe staple for years to come....

Category

21st Century and Contemporary Indian Modern Fashion Rings

Materials

Diamond, White Diamond, 10k Gold, Yellow Gold

Eight Diamonds 14K (or 18k upon request) Yellow Gold Luster Drop Earrings

$6,109 / item

Eight Diamonds 14K (or 18k upon request) Yellow Gold Luster Drop Earrings

Located in Los Angeles, CA

These drop earrings are crafted from 14K yellow and white gold, showcasing the brilliance of natural diamonds. The earrings feature full-cut diamonds, totaling 0.91 carats, with a re...

Category

2010s American Modern Drop Earrings

Materials

14k Gold, Yellow Gold

1.06 Carat Diamond and Platinum Cluster Engagement Ring

$6,773

1.06 Carat Diamond and Platinum Cluster Engagement Ring

Located in Jesmond, Newcastle Upon Tyne

Diamond Quality Feature Diamond Color I Clarity VS2 Cut Old European Content 0.74 carat Dimensions 5.64mm x 5.20mm x 3.03mm Supporting Diamonds Color (average grades) H Clarity (ave...

Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, Platinum

1.70 Carat Siam Ruby and 3.02 Carat Diamond Platinum Cocktail Ring

$32,154

1.70 Carat Siam Ruby and 3.02 Carat Diamond Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

The feature ruby is flanked on either side with impressive four-claw set transitional modern brilliant round cut diamonds, totaling 2.07 carats. The ring is further ornamented with ...

Category

Vintage 1950s Unknown Cocktail Rings

Materials

Diamond, Ruby, Platinum

Antique 2.05 Carat Emerald and 1.99 Carat Diamond Platinum Cocktail Ring

$8,141

Antique 2.05 Carat Emerald and 1.99 Carat Diamond Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this stunning emerald and diamond cluster ring in the UK. Emerald Quality Cut Emerald Content 2.05 carats Dime...

Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Emerald, Platinum

Eight Diamond White Enamel 14K (or 18k upon request) Yellow Gold Huggie Earrings

$1,611 / item

Eight Diamond White Enamel 14K (or 18k upon request) Yellow Gold Huggie Earrings

Located in Los Angeles, CA

The Eight Diamond White Enamel 14K Yellow Gold Huggie Earrings offer a captivating blend of natural diamonds and the mystical beauty of moonstone, set in luxurious 14K gold.

Category

2010s American Modern Hoop Earrings

Materials

14k Gold, Rose Gold, White Gold, Yellow Gold, Platinum, Enamel

Vintage 1.03 Carat Diamond and Platinum Cocktail Ring

$3,078

Vintage 1.03 Carat Diamond and Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Diamond Quality Feature Diamond Color H Clarity P1 Cut Transitional modern brilliant round Content 0.65 carat Dimensions 5.51mm x 3.71mm Supporting Diamonds Color (average grades) G...

Category

Vintage 1950s British Cocktail Rings

Materials

Diamond, Platinum

1.69 Carat Burmese Sapphire and 1.15 Carat Diamond White Gold Cocktail Ring

$6,088

1.69 Carat Burmese Sapphire and 1.15 Carat Diamond White Gold Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine Burma blue sapphire ring with diamonds. Sapphire Quality Origin Myanmar (Burma) Colour Blue Cut Roun...

Category

Vintage 1930s Unknown Cluster Rings

Materials

Diamond, Sapphire, White Gold, Platinum

Antique 1900s 2.59 Carat Oval Cut Tourmaline and 1.95 Carat Diamond Ring

$10,877

Antique 1900s 2.59 Carat Oval Cut Tourmaline and 1.95 Carat Diamond Ring

Located in Jesmond, Newcastle Upon Tyne

Tourmaline Quality Color Natural Green Cut Oval Content 2.59 carats Dimensions 9.42mm x 8.41mm x 4.69mm Diamond Quality Diamond One Color I Clarity SI2 Cut Old European round Conten...

Category

Antique Early 1900s Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, White Gold

Antique 2.71 Carat Diamond and Yellow Gold Pendant

$10,877

Antique 2.71 Carat Diamond and Yellow Gold Pendant

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of antique jewelry/estate jewelry. Diamond Quality Feature Diamond One Color H Clarity SI2 C...

Category

Vintage 1910s Unknown Pendant Necklaces

Materials

Diamond, Yellow Gold

1940s Pearl 1.34 Carat Diamond Gold Engagement Ring

$5,945

1940s Pearl 1.34 Carat Diamond Gold Engagement Ring

Located in Jesmond, Newcastle Upon Tyne

The ring is a very good gauge of gold and is in excellent condition, with a very clear hallmark to the interior of the ring shank. Diamond Quality Feature Diamond Color F Clarity (a...

Category

Vintage 1940s Unknown Band Rings

Materials

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

Vintage 1.10 Carat Diamond and Yellow Gold Cocktail Ring

$5,404

Vintage 1.10 Carat Diamond and Yellow Gold Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine vintage horizontal diamond ring. Diamond Quality Feature Diamond Color I Clarity VVS2 Cut Round bril...

Category

Vintage 1940s Unknown Fashion Rings

Materials

Diamond, White Gold, Yellow Gold

Antique 3.22 Carat Diamond and Platinum Art Deco Brooch

$19,087

Antique 3.22 Carat Diamond and Platinum Art Deco Brooch

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this stunning 1920s diamond brooch in platinum. Diamond Quality Feature Diamond Color K Clarity VS2 Cut Old Eu...

Category

Vintage 1920s Unknown Brooches

Materials

Diamond, Platinum

1920s 1.24 Carat Diamond and Platinum Solitaire Engagement Ring

$6,088

1920s 1.24 Carat Diamond and Platinum Solitaire Engagement Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of 1920s jewellery. Diamond Quality Feature Diamond Colour J Clarity SI1 Cut Old European r...

Category

20th Century Unknown Solitaire Rings

Materials

Diamond, Platinum

Antique 1.05 Carat Diamond and 14K White Gold Solitaire Ring

$5,404

Antique 1.05 Carat Diamond and 14K White Gold Solitaire Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine solitaire diamond ring with shoulders. Diamond Quality Feature Diamond Color I Clarity VVS2 Cut Old ...

Category

Vintage 1920s Unknown Solitaire Rings

Materials

Diamond, White Gold

Late Art Deco 4.39 Carat Diamond and Platinum Earrings

$10,877

Late Art Deco 4.39 Carat Diamond and Platinum Earrings

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of vintage jewelry/estate jewelry. Diamond Quality Feature Diamond One Color F Clarity P1 Cu...

Category

Vintage 1940s Unknown Art Deco Clip-on Earrings

Materials

Diamond, Platinum

Vintage 2.10 Carat Sapphire and 2.42 Carat Diamond Palladium Jewellery Set

$12,246

Vintage 2.10 Carat Sapphire and 2.42 Carat Diamond Palladium Jewellery Set

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of sapphire and diamond jewellery/estate jewelry. Sapphire Quality Colour Blue Cut Lozenge C...

Category

Vintage 1930s Unknown Cluster Rings

Materials

Diamond, Sapphire, Palladium

1.57 Carat Heliodor 3.20 Carat Diamond Platinum Ballerina Cluster Ring

$6,773

1.57 Carat Heliodor 3.20 Carat Diamond Platinum Ballerina Cluster Ring

Located in Jesmond, Newcastle Upon Tyne

Heliodor Quality Color Yellow Cut Round Faceted Content 1.57 carats Dimensions 8.15mm (length) x 8.09mm (width) x 4.89mm (depth) Diamond Quality Color (average grades) E Clarity (av...

Category

Vintage 1960s Unknown Cocktail Rings

Materials

Diamond, Platinum

1.92 Carat Amethyst and 1.20 Carat Diamond Platinum Ring Circa 1920

$4,994

1.92 Carat Amethyst and 1.20 Carat Diamond Platinum Ring Circa 1920

Located in Jesmond, Newcastle Upon Tyne

The cut cornered, pierced decorated double halo style design is further embellished with a total of fifty-six pavé set eight-cut diamonds, totaling 1.20 carats. The pierced decorate...

Category

Vintage 1940s Cocktail Rings

Materials

Amethyst, Diamond, Platinum

1.12 Carat Oval Cut Sapphire and Diamond Platinum Cluster Ring

$4,036

1.12 Carat Oval Cut Sapphire and Diamond Platinum Cluster Ring

Located in Jesmond, Newcastle Upon Tyne

The central sapphire is encircled by twelve pavé set eight-cut diamonds, totalling 0.48 carats. The pierced decorated, elevated ring shoulders integrate with the main setting and bl...

Category

Vintage 1930s Unknown Cluster Rings

Materials

Diamond, Sapphire, Platinum

Antique 8.64 Carat Boulder Opal 3.00 Carat Diamond Platinum Brooch Circa 1900

$12,246

Antique 8.64 Carat Boulder Opal 3.00 Carat Diamond Platinum Brooch Circa 1900

Located in Jesmond, Newcastle Upon Tyne

Opal Quality Type Boulder Cut Oval Cabochon Content 8.64 carats Dimensions 17.31mm (length) x 15.01mm (width) x 5.27mm (depth) Diamond Quality Feature Diamond One Color I Clarity SI...

Category

Antique Early 1900s Brooches

Materials

Diamond, Opal, Platinum

4.42 Carat Aquamarine 1.35 Carat Ruby, 0.22 Carat Diamond 14k Yellow Gold Brooch

$4,036

4.42 Carat Aquamarine 1.35 Carat Ruby, 0.22 Carat Diamond 14k Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

Aquamarine Quality Cut Round Faceted Content 4.42 carats Ruby Quality Cut Cabochon Content 1.35 carats Diamond Quality Color (average grades) H Clarity (average grades) P1 Cut Eigh...

Category

Vintage 1930s Unknown Brooches

Materials

Aquamarine, Diamond, Ruby, Yellow Gold

Vintage 1.85 Carat Emerald and 7.10 carat Diamond Jewellery Set

$12,246

Vintage 1.85 Carat Emerald and 7.10 carat Diamond Jewellery Set

Located in Jesmond, Newcastle Upon Tyne

Emerald Quality: Cut: Round Faceted Content: 1.85 carats Diamond Quality: Colour (average grades): H Clarity (average grades): SI2 Cut: Transitional Modern Brilliant Round/Baguette...

Category

Vintage 1940s Unknown Brooches

Materials

Diamond, Emerald, 9k Gold, White Gold, Platinum

Antique 4.99 Carat Citrine 0.89 Carat Diamond Platinum Charm/Pendant Circa 1920

$5,404

Antique 4.99 Carat Citrine 0.89 Carat Diamond Platinum Charm/Pendant Circa 1920

Located in Jesmond, Newcastle Upon Tyne

Citrine Quality Cut Oval Faceted Content 4.99 carats Dimensions 12.01mm (length) x 9.69mm (width) x 6.08mm (depth) Diamond Quality Color (average grades) G Clarity (average grades) ...

Category

Vintage 1920s Pendant Necklaces

Materials

Citrine, Diamond, Platinum

Antique 0.50 Carat Emerald and 0.90 Carat Diamond Platinum Ring Circa 1920

$6,773

Antique 0.50 Carat Emerald and 0.90 Carat Diamond Platinum Ring Circa 1920

Located in Jesmond, Newcastle Upon Tyne

Emerald Quality Cut Emerald Content 0.50 carat Dimensions 6.80mm (length) x 6.72mm (width) x 2.81mm (depth) Diamond Quality Color (average grades) H Clarity (average grades) P1 Cut ...

Category

Vintage 1920s Cocktail Rings

Materials

Diamond, Emerald, Platinum

Antique 13.41 Carat Amethyst and 0.20 Carat Diamond Platinum Ring Circa 1925

$9,484

Antique 13.41 Carat Amethyst and 0.20 Carat Diamond Platinum Ring Circa 1925

Located in Jesmond, Newcastle Upon Tyne

Amethyst Quality Cut Oval Faceted Content 13.41 carats Dimensions 18.59mm (length) x 12.94mm (width) x 8.50mm (depth) Diamond Quality Color (average grades) H Clarity (average grade...

Category

Vintage 1920s Cocktail Rings

Materials

Amethyst, Diamond, Platinum

Antique 24.02 Carat Amethyst and 0.28 Carat Diamond Platinum Ring Circa 1925

$8,141

Antique 24.02 Carat Amethyst and 0.28 Carat Diamond Platinum Ring Circa 1925

Located in Jesmond, Newcastle Upon Tyne

Amethyst Quality Cut Octagonal Content 24.02 carats Dimensions 22.26mm (length) x 15.64mm (width) x 10.51mm (depth) Diamond Quality Color (average grades) I Clarity (average grades)...

Category

Vintage 1920s Cocktail Rings

Materials

Amethyst, Diamond, Platinum

1920s Antique 1.53 Carat Diamond and Platinum Twist Engagement Ring

$5,404

1920s Antique 1.53 Carat Diamond and Platinum Twist Engagement Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this antique two stone diamond twist ring. Diamond Quality Feature Diamond One Color I Clarity SI1 Cut Old Eur...

Category

Vintage 1920s European Fashion Rings

Materials

Diamond, Platinum

Antique 0.78 Carat Sapphire and 0.29 Carat Diamond, Platinum Cocktail Ring

$6,773

Antique 0.78 Carat Sapphire and 0.29 Carat Diamond, Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Sapphire Quality Color Blue Cut Cabochon Content 0.78 carat Dimensions 6.30mm (length) x 5.20mm (width) x 4.81mm (depth) Diamond Quality Color (average grades) G Clarity (average gr...

Category

Vintage 1920s Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Oscar Caplan Art Deco 2.20 Carat Onyx 0.50 Carat Diamond Platinum Ring

$6,773

Oscar Caplan Art Deco 2.20 Carat Onyx 0.50 Carat Diamond Platinum Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this stunning onyx Art Deco ring with diamonds. Onyx Quality Cut Baguette Content 2.20 carats Diamond Quality...

Category

Vintage 1940s Unknown Art Deco Cocktail Rings

Materials

Diamond, Onyx, Platinum

Antique 2.48 Carat Sapphire and 2.80 Carat Diamond Platinum Brooch Circa 1935

$6,773

Antique 2.48 Carat Sapphire and 2.80 Carat Diamond Platinum Brooch Circa 1935

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this impressive sapphire floral brooch with diamonds. Sapphire Quality Color Blue Cut Round Faceted Content 2....

Category

Vintage 1930s Brooches

Materials

Diamond, Sapphire, White Gold, Platinum

2.70 Carat Burmese Sapphire and 0.24 Carat Diamond Platinum Ring Circa 1925

$13,614

2.70 Carat Burmese Sapphire and 0.24 Carat Diamond Platinum Ring Circa 1925

Located in Jesmond, Newcastle Upon Tyne

Sapphire Quality Origin Myanmar (Burma) Color Blue Cut Octagonal Content 2.70 carats Dimensions 7.70mm (length) x 7.00mm (width) x 4.90mm (depth) Diamond Quality Color (average grad...

Category

Vintage 1920s Solitaire Rings

Materials

Diamond, Sapphire, Platinum

Platinum 6 Carat Round Diamond Pave Bracelet

$9,500

Platinum 6 Carat Round Diamond Pave Bracelet

Located in Cape May, NJ

Era: Modern Estate Composition: Platinum Primary Stone: One Hundred Ninety-Eight Round Brilliant Diamonds Total Carat Weight: 6 Carats Color/Clarity: G-H / VS1-2 Bracelet Width: 5.5m...

Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, Platinum

Vintage 2.92 Carat Aquamarine and 1 Carat Diamond Platinum Cocktail Ring

$5,404

Vintage 2.92 Carat Aquamarine and 1 Carat Diamond Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of vintage aquamarine jewellery Aquamarine Quality Cut Marquise Content 2.92 carats Dimensio...

Category

20th Century Unknown Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Antique Art Deco 2.88 Carat Diamond and Platinum Cocktail Ring

$12,246

Antique Art Deco 2.88 Carat Diamond and Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of antique diamond jewellery/estate jewelry. Diamond Quality Feature Diamond Color J Clarity...

Category

Vintage 1930s Unknown Art Deco Fashion Rings

Materials

Diamond, Platinum

Vintage 4.65 Carat Diamond and 0.24 Carat Ruby Platinum Floral Brooch Circa 1950

$5,404

Vintage 4.65 Carat Diamond and 0.24 Carat Ruby Platinum Floral Brooch Circa 1950

Located in Jesmond, Newcastle Upon Tyne

Ruby Quality Cut Round Faceted Content 0.24 carat Diamond Quality Color (average grades) H Clarity (average grades) SI2 Cut Transitional Modern Brilliant Round/Eight Content 4.65 ca...

Category

Vintage 1950s Brooches

Materials

Diamond, Ruby, Platinum

Antique 1.10 Carat Emerald and 0.28 Carat Diamond Platinum Bar Brooch Circa 1920

$5,404

Antique 1.10 Carat Emerald and 0.28 Carat Diamond Platinum Bar Brooch Circa 1920

Located in Jesmond, Newcastle Upon Tyne

Emerald Quality Cut Mixed Content 1.10 carats Diamond Quality Color (average grades) H Clarity (average grades) SI2 Cut Eight Content 0.28 carat Number of Diamonds 30 Dimensions L...

Category

Vintage 1920s Brooches

Materials

Diamond, Emerald, Platinum

Antique 1.50 Carat Burmese Ruby and 0.66 Carat Diamond Platinum Cocktail Ring

$10,877

Antique 1.50 Carat Burmese Ruby and 0.66 Carat Diamond Platinum Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

Ruby Quality Origin Myanmar (Burma) Cut Cushion Content 1.50 (approx) carats Dimensions 8.80mm (length) x 6.50mm (width) x 2.70mm (depth) Diamond Quality Colour (average grades) H C...

Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Ruby, Platinum

5.50 Carat Opal, Natural Saltwater Pearl 8.31 Carat Diamond, Platinum Pendant

$19,087

5.50 Carat Opal, Natural Saltwater Pearl 8.31 Carat Diamond, Platinum Pendant

Located in Jesmond, Newcastle Upon Tyne

Diamond Quality Feature Diamond One Color I Clarity VS2 Cut Old European Content 0.27 carat Dimensions 4.13mm (length) x 4.10mm (width) x 2.48mm (depth) Feature Diamond Two Color J ...

Category

Vintage 1930s Unknown Pendant Necklaces

Materials

Diamond, Opal, Pearl, White Gold, Yellow Gold, Platinum

Antique and Vintage 1.60 Carat Diamond and 14k Yellow Gold Solitaire Ring

$9,509

Antique and Vintage 1.60 Carat Diamond and 14k Yellow Gold Solitaire Ring

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of diamond rings. Diamond Quality Feature Diamond Color J Clarity SI1 Cut Old European Conte...

Category

Vintage 1950s Unknown Solitaire Rings

Materials

Diamond, Yellow Gold, Platinum

Antique 2.81 Carat Opal and 0.71 Carat Diamond Silver Pendant Circa 1890

$8,141

Antique 2.81 Carat Opal and 0.71 Carat Diamond Silver Pendant Circa 1890

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine Victorian opal pendant with diamonds. Opal Quality Color White Cut Cabochon Content 2.81 carats Dia...

Category

Antique 1890s Victorian Pendant Necklaces

Materials

Diamond, Opal, Yellow Gold, Silver

Edwardian Floral 3.11 Carat Diamond and Platinum Brooch

$5,404

Edwardian Floral 3.11 Carat Diamond and Platinum Brooch

Located in Jesmond, Newcastle Upon Tyne

Reflections in photographs may detract from the true representation of this fine example of antique diamond jewelry. Diamond Quality Feature Diamond Color H Clarity SI2 Cut Round Br...

Category

Vintage 1910s Brooches

Materials

Diamond, Platinum

Antique 4.48 Carat Sapphire 4.35 Carat Diamond Platinum Line Bracelet Circa 1920

$24,560

Antique 4.48 Carat Sapphire 4.35 Carat Diamond Platinum Line Bracelet Circa 1920

Located in Jesmond, Newcastle Upon Tyne

Sapphire Quality Color Blue Cut Square Faceted Content 4.48 carats Diamond Quality Color (average grades) H Clarity (average grades) VS2 Cut Old European/Eight Content 4.35 carats ...

Category

Vintage 1920s Unknown Link Bracelets

Materials

Diamond, Sapphire, Platinum

Antique 1.50 Carat Sapphire, 0.60 Carat Diamond and Platinum Brooch Circa 1910

$3,078

Antique 1.50 Carat Sapphire, 0.60 Carat Diamond and Platinum Brooch Circa 1910

Located in Jesmond, Newcastle Upon Tyne

Sapphire Quality Color Blue Cut Cushion Content 1.50 carats Diamond Quality Color (average grades) H Clarity (average grades) SI2 Cut Eight Content 0.60 carat Number of Diamonds 38...

Category

Vintage 1910s Brooches

Materials

Diamond, Sapphire, Platinum

5.95 Carat Amethyst and 0.95 Carat Diamond Platinum Cocktail Ring Circa 1935

$2,729

5.95 Carat Amethyst and 0.95 Carat Diamond Platinum Cocktail Ring Circa 1935

Located in Jesmond, Newcastle Upon Tyne

The feature gemstone is encircled with twenty pavé set eight-cut diamonds, totalling 0.95 carat. The pierced decorated ring shoulders meld with the setting and blend seamlessly with...

Category

Vintage 1930s Cocktail Rings

Materials

Amethyst, Diamond, Platinum

Vintage 12.80 Carat Topaz 0.82 Carat Diamond and 14k Yellow Gold Brooch

$8,141

Vintage 12.80 Carat Topaz 0.82 Carat Diamond and 14k Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

Topaz Quality: Color: Orange Cut: Oval Faceted Content: 12.80 carats Dimensions: 16.88mm (length) x 13.43mm (width) x 6.62mm (depth) Diamond Quality: Color (average grades): I Clari...

Category

Vintage 1950s British Brooches

Materials

Diamond, Topaz, Yellow Gold, Platinum

5.40 Carat Aquamarine 0.21 Carat Diamond 14k White Gold Drop Earrings Circa 1950

$5,404

5.40 Carat Aquamarine 0.21 Carat Diamond 14k White Gold Drop Earrings Circa 1950

Located in Jesmond, Newcastle Upon Tyne

Aquamarine Quality Cut Round/Pear Faceted Content 5.40 carats Diamond Quality Color (average grades) H Clarity (average grades) SI1 Cut Eight Content 0.21 carat Number of Diamonds ...

Category

Vintage 1950s Drop Earrings

Materials

Aquamarine, Diamond, White Gold

Vintage 4.80 Carat Sapphire and 1 Carat Diamond White Gold Cluster Ring

$8,141

Vintage 4.80 Carat Sapphire and 1 Carat Diamond White Gold Cluster Ring

Located in Jesmond, Newcastle Upon Tyne

Sapphire Quality Origin Sri Lanka (Ceylon) Colour Blue Cut Oval Faceted Content 4.80 carats Dimensions 12.63mm (length) x 7.37mm (width) x 7.10mm (depth) Diamond Quality Colour (ave...

Category

Vintage 1980s Unknown Cluster Rings

Materials

Diamond, Sapphire, White Gold

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Eight Carat Diamond For Sale on 1stDibs

Find the exact eight carat diamond you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, Platinum and 18k Gold, this item was constructed with great care. You can easily find a 10 antique edition and 4 modern creations to choose from as well. You’re likely to find the perfect eight carat diamond among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. As it relates to this specific piece, our collection includes designs that are universally popular, but 1 Carat and 1.5 Carat carat weights, specifically, are sought with frequency. There have been many well-made iterations of the classic eight carat diamond over the years, but those made by Diamond Stars Jewelry, Inc. and Goldiva by Diana M. Jewels are often thought to be among the most beautiful. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes antique cushion cut and cushion cut alternatives. There aren’t many items for men if you’re seeking an eight carat diamond, as most of the options available are for women and unisex.

How Much is a Eight Carat Diamond?

The price for an eight carat diamond starts at $885 and tops out at $138,600 with these rings, on average, selling for $5,431.

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 rings, vintage engagement rings or Art Deco engagement rings.

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

Questions About Eight Carat Diamond

What is a 24-carat diamond?
1 Answer
1stDibs ExpertMarch 22, 2022
A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.
Is there a three-carat diamond?
1 Answer
1stDibs ExpertApril 5, 2022
Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.
What is a 7 carat diamond worth?
1 Answer
1stDibs ExpertAugust 17, 2021
A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.
What is a 9 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.
What is a 3 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
What is 1 carat diamond worth?
1 Answer
1stDibs ExpertFebruary 22, 2021
Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.
How large is a 3-carat diamond?
1 Answer
1stDibs ExpertFebruary 27, 2024
In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
How big is a 12 carat diamond?
1 Answer
1stDibs ExpertFebruary 22, 2021
The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.
How many carats should a diamond necklace be?
1 Answer
1stDibs ExpertNovember 6, 2023
There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.
How rare is a nine-carat diamond?
1 Answer
1stDibs ExpertApril 5, 2022
A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.
What is an 8 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.
What is a 4 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.
What is a 6 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.
What is a 5 carat diamond worth?
1 Answer
1stDibs ExpertSeptember 28, 2021
A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.
What is the value of a 25 carat diamond?
1 Answer
1stDibs ExpertSeptember 28, 2021
The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.
Is a 1.5-carat diamond too big?
1 Answer
1stDibs ExpertFebruary 27, 2024
Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.
Is a two-carat diamond rare?
1 Answer
1stDibs ExpertFebruary 13, 2023
Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.
Are 2 carat diamond studs too big?
1 Answer
1stDibs ExpertNovember 1, 2023
Whether two-carat diamond studs are too big is a matter of personal preference. At this size, each earring will be one carat. If you opt for the classic round brilliant cut, the studs will typically measure around 6.5 millimeters in diameter, which is a little more than half the size of a dime. Find a wide range of diamond stud earrings on 1stDibs.
Are 1.3-carat diamond earrings too small?
1 Answer
1stDibs ExpertNovember 8, 2023
Whether 1.3-carat diamond earrings are too small is a matter of personal opinion. A pair of earrings with a total carat weight of 1.3 is considered to be medium-sized. The smallest diamond earrings are around 0.25 carats, while the largest are 1.5 carats or more. Explore a wide range of diamond earrings on 1stDibs.
Are half-carat diamond studs too small?
1 Answer
1stDibs ExpertNovember 27, 2023
Whether half-carat diamond studs are too small is a matter of personal opinion. A pair of diamond studs with a total carat weight of 0.5 usually consists of two 0.25-carat earrings. Many jewelry makers offer studs as small as 0.13 carats, so many people consider half-carat diamond studs to be medium-sized. On 1stDibs, shop a collection of antique and vintage diamond stud earrings.