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Contemporary 0.66 Carat Solitaire Diamond Engagement Ring 18 Carat White Gold
Located in Hamilton, AU
Forged in 18 carat white gold, this fabulous contemporary solitaire ring features a gorgeous 0.66
Category

21st Century and Contemporary Unknown Contemporary Solitaire Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Contemporary 0.83 Carat Emerald Cut Diamond Platinum Solitaire Engagement Ring
Located in Hamilton, AU
emerald cut diamond is estimated to weigh 0.83 carats with F colour and SI2 clarity grades, and measures
Category

21st Century and Contemporary Unknown Contemporary Solitaire Rings

Materials

Diamond, Platinum

Modern Princess Cut Diamond and 18 Carat White Gold Solitaire Ring
Located in Chipping Campden, GB
The design of the ring is so simple and beautiful. The princess cut diamond measures 35pts and is
Category

Vintage 1980s British Modern Solitaire Rings

Materials

Diamond, White Gold

Yellow Gold Diamond Men's Ring - 14k Round Brilliant .28ct Solitaire
Located in Greensboro, NC
Gold Stone Information Natural Diamond Carat: .28ct Cut: Round Brilliant Color: J Clarity: SI1 Style
Category

20th Century Solitaire Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Yellow Gold Diamond Vintage Solitaire Ring - 14k Round Brilliant .28ct Floral
Located in Greensboro, NC
Yellow Gold & 14k White Gold Stone Information Natural Diamond Carat(s): .28ct Cut: Round Brilliant
Category

20th Century Solitaire Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Cober “Contemporary Classic” 4.78 Carat Tourmaline and Diamonds White Gold Ring
By Vincent Cober
Located in OSS, NH
"Contemporary Classic" ring with beautiful indigolite Tourmaline This is a 18 Carat white gold ring set with a
Category

2010s Dutch Contemporary Solitaire Rings

Materials

Tourmaline, Diamond, White Gold, 18k Gold

1.62 ct Marquise Shape IGI Solitaire Ring in 18k White Gold
Located in KAATSHEUVEL, NL
IGI (International Gemological Institute, Antwerp) certified VVS2 diamond 1.62 carat engagement
Category

21st Century and Contemporary Italian Contemporary Solitaire Rings

Materials

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

Vintage Circa 1960s Old European Cut Diamond 18 Carat Yellow & White Gold Ring
Located in Hamilton, AU
romance. The Emmie Ring Gem Details The Old European cut diamond is estimated to weigh 0.18 carats with G
Category

20th Century Unknown Modern Solitaire Rings

Materials

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

14K Rose Gold Over Sterling Silver 1/3 Carat Diamond Solitaire Pendant Necklace
Located in New York, NY
A twinkling 1/3ct round diamond rests in a soft bezel setting. Anchored on each side, a cable chain
Category

21st Century and Contemporary Indian Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Rose Gold, Sterling Silver

3 Carat Round Brilliant Diamond Solitaire Engagement Ring, GIA Certified
Located in New York, NY
diamond weighing 3.01 carats, I color, SI2 clarity, accented by two trapezoids diamonds weighing
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

10K Rose Gold over Silver 3/8 Carat Diamond Miracle Set Stud Earrings
Located in New York, NY
stunning solitaire diamond stud earrings. Immortalized in fine 10K Rose Gold Flashed .925 sterling silver
Category

21st Century and Contemporary Indian Contemporary Stud Earrings

Materials

Diamond, White Diamond, 10k Gold, Gold Plate, Sterling Silver, Rose Gold

10K Yellow Gold over Silver 3/8 Carat Diamond Miracle Set Stud Earrings
Located in New York, NY
stunning solitaire diamond stud earrings. Immortalized in fine 10K Yellow Gold Flashed .925 sterling silver
Category

21st Century and Contemporary Indian Contemporary Stud Earrings

Materials

Diamond, White Diamond, 10k Gold, Gold Plate, Yellow Gold, Sterling Silver

Ruby 3 Carat Solitaire Certified Unheated Burmese Origin, French, Estate
Located in Southbury, CT
, bright, and white diamonds weighing approximately .20 carats. There's a French purity mark on the rear
Category

2010s French Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

1 1/3 Ct Natural Real Round Solitaire Diamond Halo Engagement Ring 14k Gold
Located in New York, NY
Classic 1 1/3 Ct brilliant round solitaire diamond halo engagement ring in 14k white gold. The
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1 1/3 Ct Natural Real Round Solitaire Diamond Halo Engagement Ring 14k Gold
Located in New York, NY
Classic 1 1/3 Ct brilliant round solitaire diamond halo engagement ring in 14k white gold. The
Category

2010s American Engagement Rings

Materials

Diamond

4.6 Carat Tanzanite Solitaire Yellow Diamonds Handmade 22K-21K Gold Bridal Ring
By AB Jewelry NYC
Located in New York, NY
rose-cut diamonds, free-formed The stone setting measuring approximately 13mm by 10mm, the band is 1 3
Category

21st Century and Contemporary American Contemporary Bridal Rings

Materials

Tanzanite, Blue Sapphire, Multi-gemstone, Yellow Diamond, Diamond, Yello...

14K White Gold 3 1/2 Carat Fancy Oval Diamond Triple Halo Cocktail Ring
Located in New York, NY
feast. The ring is completed with a massive solitaire diamond weighing over 1.4 carats. The rose cut
Category

21st Century and Contemporary Indian Modern Fashion Rings

Materials

Yellow Diamond, Brown Diamond, White Diamond, Diamond, White Gold, 14k Gold

3 Carat Ct Real Natural Round Diamond Full Eternity Band Ring 14k Yellow Gold 1
Located in New York, NY
Stunning over 3 carat round diamond full eternity band ring in 14k yellow gold. 17 round SI-I
Category

2010s American Band Rings

Materials

Diamond, Yellow Gold

3 carat face look Emerald shape Piecut diamond with a Border of ruby & diamonds
Located in Bangkok, TH
This ring is made with 0.70carat Pie cut diamonds Invisible set diamonds giving a look of 3 carat
Category

2010s Thai Art Deco Cluster Rings

Materials

Diamond, Ruby, 18k Gold

3 carat face up Emerald Piecut with a halo of Baguette diamonds
Located in Bangkok, TH
This pair of earrings is made with 1.38 carat diamonds in composite setting giving a look of 6
Category

2010s Thai Art Deco Stud Earrings

Materials

Diamond, 18k Gold

18ct White Gold Solitaire Diamond Earrings 0.95ct Studs Martini 1ct One Carat
Located in Ilford, GB
One Carat Diamond, a pair not to be missed! 5mm each diamond solitaire studs. Fully Hallmarked for
Category

21st Century and Contemporary British Stud Earrings

3 Carat Ct 1 Real Natural Round Diamond Full Eternity Band Ring 14k Yellow Gold
Located in New York, NY
Stunning over 3 carat round diamond full eternity band ring in 14k yellow gold. 17 round SI-I
Category

2010s American Band Rings

Materials

Diamond, Yellow Gold

1.27-ct GIA Diamond Platinum Solitaire Ring Estate Jewelry
Located in Beverly Hills, CA
A diamond solitaire with accents and platinum ring of a classic design. The ring’s center stone
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

GIA 1.07ct Estate Pear Diamond Solitaire 14k White Gold Engagement Wedding Ring
Located in New York, NY
A Beautiful Classic Estate Vintage 1.07ct Pear Shaped Solitaire Ring . Buy her this the most
Category

Early 2000s American Engagement Rings

Materials

Diamond, 14k Gold, White Gold

White Gold Diamond Solitaire Pendant Necklace - 14k Round Cut .52ct Adjustable
Located in Greensboro, NC
Metal Content: 14k White Gold Stone Information Natural Diamond Carat: .52ct Cut: Round Brilliant
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Daniella's Solitaire Engagement Ring 6-prong
Located in Los Angeles, CA
: Natural Conflict Free Round Diamond Diamond Carat : 1 Carat Diamond Clarity : VS/SI1 Diamond Color : F-G
Category

2010s American Modern Engagement Rings

Materials

18k Gold, Yellow Gold

Amazing 3ct Spread Rose Cut Diamond Salt and Pepper 14ct Gold Solitaire Ring
Located in St Helens, GB
A fine diamond solitaire ring. Solid 14 carat yellow gold example. Set with a single, natural
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold

Amazing 3ct Spread Rose Cut Diamond Salt and Pepper 14ct Gold Solitaire Ring
Located in St Helens, GB
A fine diamond solitaire ring. Solid 14 carat yellow gold example. Set with a single, natural
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold

Modern Diamond and Platinum Halo Ring, 1.00 Carat
Located in London, GB
A modern solitaire diamond halo design ring, set with an approximately 1.00 carat, H/I colour, VS2
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

3.01 ct GIA Certified Natural Fancy Yellow Cushion Cut Solitaire Engagement Ring
By SCARSELLI
Located in New York, NY
design of this ring is all about the center stone – just over 3 carats of fancy yellow diamond in a
Category

2010s American Modern Engagement Rings

Materials

Yellow Diamond, White Diamond, Diamond, Platinum, Yellow Gold, White Gol...

18 Karat White Gold 2.51 Carat Diamond Dangle Earrings Statement
By Gems Paradise
Located in Jaipur, IN
18 Karat White Gold 2.51 Carat Diamond Dangle Earrings Statement This incredible mixed rose cut
Category

2010s Indian Modern Dangle Earrings

Materials

Diamond, Gold, 18k Gold, White Gold

Art Deco Filigree 2.27 Carat Old European Diamond Engagement Ring
Located in Santa Barbara, CA
and detailed openwork. The central solitaire, a 2.27 carat old European diamond displays splendid
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

2.06 Carat Certified Round Brilliant Diamond Platinum Vintage Engagement Ring
Located in Hamilton, AU
Crafted in platinum is this timeless diamond solitaire ring carefully set with an alluring 2.06
Category

21st Century and Contemporary Australian Modern Engagement Rings

Materials

Diamond, Platinum

GIA 2.85ctw H SI1 Round Cut Diamond Engagement Wedding Platinum Estate Ring
Located in New York, NY
To anyone who doesn't want plain solitaire but is tired of a diamond halo style... If you are
Category

Early 2000s North American Engagement Rings

Materials

Diamond, Platinum

Unisex Invisible Set 1.50ctw Princess Cut Diamond Vintage Stud-Earrings 14K Gold
Located in New York, NY
3 carat solitaire when it's on due to invisible setting. The estimated total weight is 1.50ct, G-H
Category

Early 2000s Modern Stud Earrings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

Boucheron Natural Burma Ruby Diamond Ring
By Boucheron
Located in London, GB
weight of 0.20 carats, to a flanked solitaire design with curving claws, a pierced gallery and open
Category

Vintage 1930s French Engagement Rings

Materials

Diamond, Ruby, Platinum

Diamond Stud Earrings 14k White Gold Estate Jewelry
Located in Beverly Hills, CA
are made of 14 karat white gold and feature two radiant cut diamonds. One diamond is 5.12-carat, L
Category

21st Century and Contemporary Unknown Stud Earrings

Materials

Diamond, 14k Gold, White Gold

Platinum Fancy Yellow Diamond Halo Engagement Ring - 18k Emerald Cut 1.26ctw GIA
Located in Greensboro, NC
Information Natural Diamond Solitaire Carat: .82ct Cut: Emerald Color: Fancy Yellow Clarity: VVS1 Certified by
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum

Platinum Emerald & Diamond Halo Ring - 18k Emerald Cut 2.34ctw GIA
Located in Greensboro, NC
Size: 5 3/4 Sizing Fee: Up 2 sizes for $100 Metal Content: Platinum & 18k Yellow Gold (solitaire
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold, Platinum

Yellow Gold Emerald & Diamond Halo Ring - 18k Emerald Cut 2.70ctw GIA
Located in Greensboro, NC
: Green Origin: Colombia Certified by: GIA Report Number: 2221722332 Natural Diamonds Carat(s): 1.30ctw
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

David Yurman Wheaton Smoky Quartz Diamond Ring - Yellow Gold 18k Cushion .18ctw
By David Yurman
Located in Greensboro, NC
: 20mm x 15mm Natural Diamonds Carat(s): .18ctw Cut: Round Brilliant Total Carats: .18ctw Style
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Quartz, 18k Gold, Yellow Gold

White Gold Diamond Band - 18k Princess Cut .23ctw Wedding Ring Size 6 1/2
Located in Greensboro, NC
Size: 6 1/2 Metal Content: 18k White Gold Stone Information Natural Diamond Carat(s): .20ct Cut
Category

20th Century Band Rings

Materials

Diamond, 18k Gold, White Gold

Simon G. Aquamarine & Diamond Halo Ring - White Gold 18k Oval 8.28ctw Sz 6 1/4
Located in Greensboro, NC
Information Natural Aquamarine Treatment: Heating Carat(s): 6.44ct Cut: Oval Color: Blue Natural Diamonds
Category

21st Century and Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

Yellow Gold Semi-Mount Flower Ring - 14k Round Brilliant .23ctw for ~6mm Round
Located in Greensboro, NC
Stone Information Natural Diamonds Carat(s): .23ctw Cut: Round Brilliant Color: F - G Clarity: VS1 - VS2
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Yellow Gold

New Semi-Mount Engagement Ring & Wedding Band, 14k Gold for Center .37ctw
Located in Greensboro, NC
: Natural Diamonds - Clarity: SI1 - SI2 Color: G - H Cut: Round Total Carats: 0.37ctw Fits Solitaire Size
Category

Late 20th Century Unknown Engagement Rings

Materials

14k Gold, Rose Gold, White Gold

Fancy Brown Diamond Solitaire Ring in Platinum, Art Deco Setting
Located in PARIS, FR
Fancy brown diamond ring: a solitaire diamond fancy cognac ring in platinum. This ring is centered
Category

Vintage 1920s French Art Deco Solitaire Rings

Materials

Brown Diamond, Platinum

Art Deco 1.20 Carat Emerald Cut Diamond Solitaire Plus Platinum Ring
Located in Napoli, IT
cut Diamond weighing 1.20 Ct the solitaire alone (6.96 mm. x 5.33 mm.) makes the focal point of this
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Platinum

Diamond Solitaire Ring 18 Karat Yellow Gold
Located in East Grinstead, GB
Diamond Solitaire Ring 18 Karat Yellow Gold A delicate brilliant cut diamond solitaire ring. The
Category

Late 20th Century British Modern Three-Stone Rings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

French Late Art Deco Distinctive 1.95 Carat Diamond Cocktail Ring
Located in Napoli, IT
holding two main solitaires old European cut which alone would make a statement Diamond piece Each large
Category

Vintage 1930s French Art Deco Cocktail Rings

Materials

Diamond, 18k Gold, Platinum

GIA 3.51 Carat Moval Cut Diamond Platinum Solitaire Ring
Located in Beverly Hills, CA
One GIA 3.51 Carat Moval Cut Diamond Platinum Solitaire Ring. Featuring one round modified marquise
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Gold, White Gold, Platinum

GIA 3.51 Carat Moval Cut Diamond Platinum Solitaire Ring
Located in Beverly Hills, CA
One GIA 3.51 Carat Moval Cut Diamond Platinum Solitaire Ring. Featuring one round modified marquise
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Gold, White Gold, Platinum

Baume Modern 1.25 Carat Cognac Cushion Cut Diamond Gold Solitaire Ring
By Baume
Located in Poitiers, FR
cm, ring width at the base: 3 mm. Total weight of cognac diamond : approx 1.25 carat Total weight
Category

20th Century French Modern Solitaire Rings

Materials

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

Mid Century GIA 1.61 Carat Round Brilliant Cut Diamond Yellow Gold Solitaire
Located in Beverly Hills, CA
One Mid Century GIA 1.61 Carat Round Brilliant Cut Diamond Yellow Gold Solitaire Ring. Featuring
Category

Vintage 1960s American Solitaire Rings

Materials

Diamond, 10k Gold, Yellow Gold

Edwardian 1.55 Carat Old European Cut Diamond 18K Gold Solitaire Bezel Set Ring
Located in Beverly Hills, CA
One Edwardian 1.55 Carat Old European Cut Diamond 18 Karat White Gold Solitaire Bezel Set Ring
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Antique 0.85 Carat Old Mine Cut Diamond 18 Karat Gold Solitaire Engagement Ring
Located in Beverly Hills, CA
One Antique Old Mine Cut Diamond 18 Karat Gold Solitaire Engagement Ring. Featuring one old mine
Category

Vintage 1910s Victorian Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Edwardian 1/2 Carat Old European Cut Solitaire Platinum Engagement Ring
Located in Addison, TX
of Stone Measurement: 5.85mm Center Diamond Details: Shape: Old European Cut Carat Weight: .5 CT
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, Platinum

Art Deco Platinum 1.25Ct Diamond Vintage Solitaire Engagement Ring
Located in Addison, TX
to Top of Ring: 6.75mm Center Diamond Details: Shape: Old European Cut Carat Weight: 1.25Ct Color
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, Platinum

Art Nouveau 14K Yellow Gold Flower Designed Solitaire Diamond Statement Ring
Located in Addison, TX
Center Diamond Details: Shape: Old European Cut Carat Weight: 0.25Ct Color: J Clarity: SI *More
Category

Antique 1890s Unknown Art Nouveau Solitaire Rings

Materials

Diamond, 14k Gold, Yellow Gold

Vivid Purple Oval Amethyst 9 Carat Yellow Gold Solitaire Vintage Ring
Located in Hamilton, AU
Carefully crafted in 9 carat yellow gold is this charming vintage ring featuring a glorious bright
Category

20th Century Unknown Modern Solitaire Rings

Materials

Amethyst, Diamond, 9k Gold, Yellow Gold

Victorian 18K Yellow Gold Rose Cut Diamond Low Profile Carved Solitaire Ring
Located in Addison, TX
This Victorian eye catcher is sure to turn heads. The solitaire rose cut diamond reminds me of a
Category

Antique Early 1900s Unknown Victorian Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

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Diamond Solitaire Over 3 Carat For Sale on 1stDibs

You are likely to find exactly the diamond solitaire over 3 carat you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of platinum, gold and 18k gold, this item was constructed with great care. Find an antique version now, or shop for 108 vintage or 48 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a diamond solitaire over 3 carat 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. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 carat and 1 carat carat weights, specifically, are sought with frequency. There have been many well-made iterations of the classic diamond solitaire over 3 carat over the years, but those made by Gems Paradise, Tiffany & Co. and Antinori Fine Jewels are often thought to be among the most beautiful. See these pages for an old european cut iteration of this accessory, while there are also round cut cut and emerald cut cut versions available here, too. There aren’t many items for men if you’re seeking a diamond solitaire over 3 carat, as most of the options available are for women and unisex.

How Much is a Diamond Solitaire Over 3 Carat?

The price for a diamond solitaire over 3 carat starts at $319 and tops out at $1,200,000 with these rings, on average, selling for $8,850.

Finding the Right Rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About Diamond Solitaire Over 3 Carat
  • 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.
  • 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.
  • 1stDibs ExpertFebruary 13, 2023
    Whether a 3-carat diamond is considered big is largely a matter of personal opinion. The average diamond is 1 to 2 carats in size. On 1stDibs, shop a selection of diamond jewelry.