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43 carat Carved tourmaline rosecut diamond bracelet
Located in Yorba Linda, CA
set rosecut diamonds Silver 27.7 gms Rosecut Diamond 3 carats Tourmaline 40 carats
Category

2010s Indian Victorian Link Bracelets

Materials

Diamond, Tourmaline, Silver

3 Carats Natural Loose Green Tourmaline Pieces For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline Weight: 3.0 Carats Dimension: 10x4.8x3.1 Emerald 7.5x6.2x4.4 cushion Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

25.21 Carats Top Quality Rubellite Tourmaline Cabochon 3 Pieces Natural Gemstone
Located in Jaipur, RJ
Gemstone - Rubellite Tourmaline Weight - 25.21 Ct Size - 9.5 To 16x11 MM Piece - 3 Shape
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

1.75 Carat Natural Loose Mix Color 3 Piece Tourmaline Lot Afghan Gemstones
Located in Bangkok, TH
Weight 1.75 carat Piece 3 Treatment None Origin Afghan Clarity VVS Shape Cut Mix Cut This
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

10.44 Carat Rubellite Tourmaline Diamond Platinum 3-Stone Ring
Located in Beverly Hills, CA
10.44 Carat Rubellite Tourmaline Diamond Platinum 3-Stone Ring A juicy and vibrant rubellite
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Rubelite, Tourmaline, Platinum

44.85 Carats Rubellite Tourmaline 3 Pieces Top Fine Jewelry Set Natural Gemstone
Located in Jaipur, RJ
44.85 Carats Rubellite Tourmaline 3 Pieces Top Fine Jewelry Set Natural Gemstone Gemstone
Category

21st Century and Contemporary Unknown Beaded Necklaces

Materials

Rubelite, Tourmaline

3 Color Tourmaline Stones Cts 8.92
Located in Hong Kong, HK
These three beautiful Color Tourmalines, with a total weight of 8.92 carats, offer a stunning blend
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Tourmaline

Beautiful 3 Carat Natural Loose Yellow Tourmaline Oval Shape Ring Gem
Located in Peshawar, PK
Loose Yellow Tourmaline Weight: 3.00 Carats Dimension: 10.3 x 6.7 x 5.7 Mm Colour: Yellow Origin
Category

21st Century and Contemporary Central African Arts and Crafts Loose Gems...

Materials

Tourmaline

84.37 Carats Rubellite Tourmaline Carved Leaf 3 Pieces Fine jewelry Natural Gem
Located in Jaipur, RJ
84.37 Carats Rubellite Tourmaline Carved Leaf 3 Pieces Fine jewelry Natural Gem Weight: 84.37
Category

21st Century and Contemporary African Art Deco Loose Gemstones

Materials

Rubelite, Tourmaline

3-Color Set Oval Tourmalines Cts 4.63
Located in Hong Kong, HK
Add a burst of color to your jewelry collection with this dazzling trio of oval-shaped tourmalines
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Tourmaline

Eye Catching Natural Loose Mintgreen Tourmaline Cushion Shape Ring Gem 3 Carats
Located in Peshawar, PK
Loose Tourmaline Weight: 3.0 Carats Dimension: 9.5x7x5 Mm Origin: Kunar Afghanistan Shape
Category

Antique Late 19th Century Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Ring Three Stone Yellow Gold 9k with Dark 3 Oval Dark Green Tourmalines 3 Carat
Located in Heemstede, NL
! Material: 9k yellow gold Gemstones:  3 dark green tourmalines Carat: about 3 in total Cut: oval facetted
Category

Vintage 1980s Dutch Three-Stone Rings

Materials

Tourmaline, 9k Gold, Yellow Gold

3 Green Emerald-Cut Tourmaline Stones Cts 8.88
Located in Hong Kong, HK
This exquisite set features three emerald-cut green tourmaline gemstones. With a total weight of
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Tourmaline

7.70 Carats Emerald Cut Chrome Tourmaline and Trapezoid Diamond 3 Stone Ring
By Kiersten Elizabeth
Located in Southport, CT
Details: Emerald Cut Chrome Tourmaline (11.7 x 11.3 mm) weighing 6.75 Carats Very Slightly Bluish
Category

2010s Three-Stone Rings

Materials

Diamond, Tourmaline, Chrome Tourmaline, 14k Gold, White Gold

18K Gold 1/3 Carat Diamond, Tourmaline Peridot Flower Leaf Tulip Brooch Pin
Located in New York, NY
-shaped pink tourmalines are artfully arranged to form a halo, evoking the delicate and captivating petals
Category

21st Century and Contemporary American Contemporary Brooches

Materials

Diamond, Peridot, Tourmaline, 18k Gold, White Gold

HARAKH 1/3 Carat Colorless Diamond Pink Tourmaline Cascade 18K Gold Earrings
By Harakh
Located in New York, NY
white gold, this exquisite piece features a total diamond weight of 1/3 carat and a total gemstone
Category

2010s Indian Contemporary Stud Earrings

Materials

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

4 Carat Paraiba Tourmaline Oval and Cadillac Diamond 3 Stone Ring in Platinum
By Kothari
Located in Los Angeles, CA
Gorgeous 4.24 ct. paraiba tourmaline oval with 1.06 ct. good quality white diamond cadillac cut
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

3 Carat Radiant Cut Vivid Pink/Purple Tourmaline Diamond Cluster Platinum Ring
By Gad Co.
Located in Miami, FL
Vintage 3 Carat Radiant Cut Vivid Pinkish Purple Tourmaline Ring. Set in Platinum 950, this semi
Category

21st Century and Contemporary North American Art Deco Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

18K 3 Stone 4.5 carat tw Indicolite Blue Teal Tourmaline Ring size 6.5
Located in Big Bend, WI
18K yellow gold 3 stone ring featuring blue/teal tourmalines (indicolite). There are 3 long emerald
Category

2010s Cocktail Rings

Materials

Tourmaline, Gold, 18k Gold, Yellow Gold

HARAKH 18KT Gold 3 Carat Colorless Diamond and Pink Tourmaline Cascade Earring
By Harakh
Located in New York, NY
a beautiful mix of natural pink tourmaline and brilliant and rose-cut diamonds dripping delicately
Category

2010s Indian Contemporary Stud Earrings

Materials

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

Diamond Tourmaline Rubellite Ring 3 Platinum 3.72 TCW Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Tourmaline Rubellite Diamond Ring size 3 resizable set in Platinum
Category

2010s American Modern Bridal Rings

Materials

Tourmaline, Rubelite, Diamond, Platinum

3, 05 Carat Tourmaline Diamond Elegant Fashion Pendant for Her 14K Gold
By Natkina
Located in Genève, GE
Pendant White 14K Gold (Just Pendant) Diamond 120-RND57-0,44-4/6A Tourmaline 1-3,05 ct Weight
Category

2010s Swiss Modern Pendant Necklaces

Materials

Diamond, Tourmaline, Gold, White Gold, 14k Gold

Cellini 18 Karat Yellow Gold Pink Tourmaline and .40 Carat 3 Petal Earrings
By Roberto Casarin
Located in New York, NY
These lovely 18kt yellow gold flower earrings feature 3 beautiful cabochon pink tourmaline petals
Category

Early 2000s Italian Modern Clip-on Earrings

Materials

Diamond, Tourmaline, 18k Gold, Yellow Gold

Diamond Rubellite Tourmaline Ring 3 TCW 14k Gold Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Tourmaline Diamond Ring 3 TCW 14k Gold Certified $3,450 912277 This
Category

2010s American Modern Wedding Rings

Materials

Diamond, Rubelite, Tourmaline, 14k Gold, White Gold

Exceptional 3.34 Carat Mozambique Paraíba Tourmaline, Neon “Windex Blue”
Located in Tampa, FL
color concentration. Paraíba tourmalines exceeding 3 carats with true neon blue coloration and high
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Tourmaline, Paraiba

Bluish Green Natural Tourmaline Ring, Earrings Loose Gemstones 3 CT Cushion Cut
Located in Peshawar, PK
Cushion Cut from Kunar, Afghanistan!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 3.00 Carat 🪚 SHAPE & CUT
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Vibrant Green Natural Tourmaline Ring Loose Gemstone 3 Ct Emerald Cut-Jewelry
Located in Peshawar, PK
Setting-Emerald Cut!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 3.00 Carats 🪚 SHAPE & CUT: Emerald Cut 📏
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Reddish Pink Natural Rubellite Tourmaline Ring Loose Gemstone 3 Ct Cushion Cut
Located in Peshawar, PK
Jewelry Setting-Cushion Cut 💎 GEMSTONE TYPE: Rubellite Tourmaline ⚖️ WEIGHT: 3.00 Carats 🪚 SHAPE & CUT
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Rubelite, Tourmaline

Cotton Candy Pink Natural Tourmaline Ring Loose Gemstone 3 Ct Round Cushion Cut
Located in Peshawar, PK
Cushion Cut from Kunar, Afghanistan!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 3 Carats 🪚 SHAPE & CUT
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Light Pale Green Natural Tourmaline Ring Loose Gemstone 3 Ct Cushion Cut Jewelry
Located in Peshawar, PK
Light Pale Green Natural Tourmaline Loose Gemstone for Ring, Necklace Pendant, Bracelet or any
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Deep Inky Blue Natural Tourmaline Ring Loose Gemstone 3 Ct Emerald Cut-Jewelry
Located in Peshawar, PK
from Kunar Afghanistan!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 3.00 Carats 🪚 SHAPE & CUT: Emerald
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Vivid Pink Natural Tourmaline Ring Loose Gemstones 3 Ct Cushion Cut for Jewelry
Located in Peshawar, PK
Setting-Square Cushion Cut from Kunar Afghanistan!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 3.00 Carat 🪚
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Rubelite, Tourmaline

1.19 Carat Blue Paraiba Tourmaline Sirius Star 3 stone Diamond Engagement Ring
Located in Manchester By The Sea, MA
This is a beautiful Blue 1.19 Carat Paraiba Blue 3 Stone engagement ring that features two 88
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Paraiba, 14k Gold

17.65 Carats Rubellite 3 Pieces Cushion Cut Layout For Jewelry Natural Gemstone
Located in Jaipur, RJ
- Tourmaline Weight - 17.65 Carats Shape - Cushion Size - 10.5 To 12 MM Pieces - 3
Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Tourmaline

HARAKH 6 3/8 CT Colorless Diamond and Tourmaline Mandala Bangle in 18KT Gold
By Harakh
Located in New York, NY
, While the 3 1/8 carat Tourmaline adds an elegant pop of Color. Chic and versatile, this Bangle is
Category

2010s Indian Contemporary Chandelier Earrings

Materials

Diamond, Tourmaline, 18k Gold, Rose Gold, White Gold

3.00 Carat Checkerboard Green Tourmaline and Pave Diamond Gold Vintage Ring
Located in Montreal, QC
3 Carat Round Checkerboard Green Tourmaline. Surrounded by Pave Diamonds, weighing approx. 0.50tcw
Category

Late 20th Century Modernist Cocktail Rings

Materials

Diamond, Tourmaline, Gold, 14k Gold, White Gold

Art Deco Style 3.50 Carat Tourmaline Diamonds Cluster Ring 14k Gold
Located in Miami, FL
Art Deco Style 3.50 Carat Tourmaline & Diamonds Cluster Ring 14k Gold. Beautiful ring featuring a 3
Category

Vintage 1960s Art Deco Cluster Rings

Materials

Diamond, Tourmaline, 14k Gold, Yellow Gold

22K Yellow Gold 5 Carat Round Mint Tourmaline Diamond Egyptian Revival Ring
Located in Los Angeles, CA
Tourmaline, 3 Emerald Cut Diamonds, Four Round White Diamonds, 2 Yellow Diamonds, G Color VS1-VS2 Clarity
Category

Late 20th Century Egyptian Egyptian Revival Engagement Rings

Materials

Diamond, Tourmaline, 22k Gold, Yellow Gold

11.72 carats Natural rare Zircon 3 Pieces Cut stone for fine jewelry natural gem
Located in Jaipur, RJ
11.72 carats Natural rare Zircon 3 Pieces Cut stone for fine jewelry natural gem Weight - 11.72
Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Aquamarine, Sapphire, Tourmaline

3 Carat Rubelite Emerald Cut Forget Me Knot with Diamonds in 18 Carat Gold
Located in Brisbane, AU
OHLIGUER Forget Me Knot Rubelite and diamond ring 3ct emerald cut rubellite (or cut of your choice) Custom made to your size ** This is a custom made jewel 18ct yellow and white ...
Category

2010s Australian Contemporary Engagement Rings

Materials

Diamond, Rubelite, Tourmaline, Gold, 18k Gold

Green Tourmaline Flower Ring with Diamond
Located in Scottsdale, AZ
This beautiful flower ring is made with 18 karat gold, 3 carat total weight of green tourmaline
Category

Vintage 1970s Unknown Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold

18K Gold Seidengang Pink Tourmaline and Diamond Ring
By SeidenGang
Located in Los Angeles, CA
weighs ~3 carat, bright and vivid pink 12 round brilliant champagne color diamonds 18k yellow gold 2 tone
Category

1990s Contemporary Band Rings

Materials

Diamond, Tourmaline, 18k Gold, Yellow Gold

Syna Yellow Gold Peridot, Pink Tourmaline and Diamonds Earrings
By Syna Jewels
Located in Fort Lee, NJ
Created in 18 karat yellow gold Peridot 8 carats approx. Pink Tourmaline 3 carats approx. Diamonds
Category

2010s American Contemporary Dangle Earrings

Materials

Diamond, Peridot, Tourmaline, 18k Gold, Yellow Gold

Solitaire Ring Yellow Gold 18k with Oval Facetted Garnet 3 carat
Located in Heemstede, NL
: 18k Gemstone: garnet Cut: oval facetted Carat: ca.3  Weight: ca 2.2 grams Ring Size: EU 17, US 7, GB O
Category

Vintage 1980s French Solitaire Rings

Materials

Garnet, 18k Gold, Yellow Gold

Bague ancienne en émeraude, tourmaline et saphir en trèfle
Located in PARIS, FR
serti d'une tourmaline (env. 3 carats), d'un saphir (env. 2,4 carats) et d'une émeraude (env. 1,6 carats
Category

Vintage 1950s French Retro Dome Rings

Materials

Diamond, Emerald, Blue Sapphire, Tourmaline, 18k Gold

Bespoke Halo Mount for 3-5 Carat Yellow White Diamond Oval Shape Platinum Ring
By Hasbani Diamonds
Located in London, GB
This Spectacular Bespoke mount is suitable for a 3 - 5 Carat center diamond with 0.93 Carat of
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Pink Diamond, Eme...

Silver Entourage Ring with Oval Rock Crystal of 3 carat White Sapphires
Located in Heemstede, NL
: Material: silver Gemstone: rock crystal Carat: ca 3 Cut: oval facetted Gemstones: 14 white sapphires Carat
Category

Vintage 1980s Dutch Solitaire Rings

Materials

Crystal, Rock Crystal, Sapphire, Silver

Syna Yellow Gold Limited Edition Green Tourmaline, Rubies and Diamond Earrings
By Syna Jewels
Located in Fort Lee, NJ
18 karat yellow gold Green Tourmaline 3 carats approx. Carved Rubies 23 carats approx. Diamonds
Category

2010s American Contemporary Dangle Earrings

Materials

Diamond, Ruby, Tourmaline, 18k Gold, Yellow Gold

Bochic “Orient” Ruby, Tourmaline Sapphires Cocktail Ring Set 18K Silver
By Bochic
Located in New York, NY
rubies - 1 carats Natural fancy multi sapphires from Sri Lanka 3 carats Natural Tourmalines 3 carats
Category

21st Century and Contemporary Thai Belle Époque Cocktail Rings

Materials

Ruby, Sapphire, Pink Sapphire, Tourmaline, 18k Gold, Gold Plate, White G...

18 Karat White Gold Petals Green Tourmaline Solitaire Assher Woven Flower Ring
By Intini Jewels
Located in Milano, IT
Magnificent and splendid 18 karat white gold and 3 carats green tourmaline flower ring. A delicate
Category

2010s Italian Romantic Engagement Rings

Materials

Tourmaline, Gold, 18k Gold, White Gold

“Orient” Pink Tourmaline Multi Gem Brooch Set in 18k Gold Silver
By Bochic
Located in New York, NY
Tourmaline - 3 carats Natural White Zircon - 1 carat Natural Mix Gems, Yellow Sapphire, Amethyst
Category

21st Century and Contemporary Thai Baroque Brooches

Materials

Amethyst, Pink Sapphire, Yellow Sapphire, Topaz, Tourmaline, Zircon, 18k...

Bochic “Capri” Rose Quartz, Tourmaline Cocktail Ring Set In 18 K Gold Silver
By Bochic
Located in New York, NY
- 5 Carat Natural Tourmaline - 3 Carat Natural White Topaz - 1 Carat This Ring is from the "Capri
Category

21st Century and Contemporary Thai Baroque Cocktail Rings

Materials

Quartz, Topaz, Tourmaline, Gold, 18k Gold, Gold Plate, Silver

3 Carat Tourmaline and Diamond Silver and Rose Gold Ring
Located in Aliso Viejo, CA
green Tourmalines and rich pinkish tourmaline center. The center stone measures apprx. 9 x 7 mm oval
Category

Early 2000s American Modern Cocktail Rings

Materials

Diamond, Tourmaline, Rose Gold, Silver

3 Carat Tourmaline and Diamond Rose and White Gold Ring
Located in Aliso Viejo, CA
A custom cut center tourmaline can be seen in this ring. The center stone weighs apprx. 1.5 carats
Category

Early 2000s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, 18k Gold, Rose Gold, White Gold

3 Carat Tourmaline and Diamond Platinum and Yellow Gold Drop Earrings
Located in Aliso Viejo, CA
. The center stone on earring is a 1 carat blue green emerald cut Tourmaline. The total carat weight of
Category

Early 2000s American Modern Drop Earrings

Materials

Diamond, Tourmaline, Yellow Gold, Platinum

3 Carat Tourmaline and Diamond Rose Gold and Grey Silver Cocktail Ring
Located in Aliso Viejo, CA
. The center stone is a pink oval Tourmaline that is oval cut and weighs 1.5 carats appx. The center
Category

Early 2000s American Modern Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, Rose Gold, Silver

Gold Tone and Sterling Silver Tourmaline and Diamond Ring
Located in Splitter s Creek, NSW
3 carat Tourmaline of purplish-pink, centres this very unusual & attractive Ring. It is oval
Category

2010s Unknown Retro Fashion Rings

Materials

Diamond, Tourmaline, Sterling Silver

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3 Carat Tourmaline For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 3 carat tourmaline for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and White Gold — can elevate any look. Find an antique version now, or shop for 608 vintage or 2090 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a 3 carat tourmaline 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. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. A 3 carat tourmaline from Merkaba, LB Exclusive and DGI — each of whom created a beautiful version of this treasured accessory — is worth considering. An oval cut version of this piece has appeal, but there are also round cut and cushion cut versions for sale. If you’re browsing our inventory for a 3 carat tourmaline, 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 3 Carat Tourmaline?

On average, a 3 carat tourmaline at 1stDibs sells for $4,488, while they’re typically $115 on the low end and $2,699,999 for the highest priced versions of this item.

The Legacy of Tourmaline in Jewelry Design

Very few gems dazzle quite in the manner that tourmaline does — vintage and antique tourmaline jewelry is a showstopper, and you can blame this on its wide range of spectacular colors. In fact, when Dutch traders brought stones back home from Sri Lanka that they couldn't identify, they called them "toramalli," a Sinhalese term for "mixed gems."

If you could transform the ocean to a gem, this is what it would look like: a clear, translucent azure, bordering on turquoise, hypnotizing in its depth and sparkling in the sun.

There is, in fact, such a stone, although it comes from deep in the copper-rich mountains of Paraíba, Brazil, and not from the oceans along its coast. Far rarer than diamonds, Paraíba tourmaline, a kind of tourmaline discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.

While diamonds generally sell for about $6,000 per carat, a carat of Paraíba tourmaline is likely to fetch about $16,000. Fans of the gem are said to include singer Taylor Swift and actress Zooey Deschanel, as well as some of the finest jewelers.

“No other stone can have a color as magnetic and captivating as Paraíba tourmaline,” says Vania Leles of VanLeles Diamonds, who combines the stone with diamonds and other gems in several of her designs.

You don't have to stop at Paraíba tourmaline jewelry — on 1stDibs, find the most extraordinary antique and vintage tourmaline rings, tourmaline and diamond earrings and other accessories.

Questions About 3 Carat Tourmaline
  • 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 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 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.