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3 Carat Tourmaline

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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

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

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

3.10 Carats Mismatch Tourmaline Pair, Pink Tourmaline Marquise
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 3.10 Carats Shape - princess , marquise Size - 7x7 to 8x4 MM Pieces
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

3.10 Carats Mismatch Tourmaline Pair, Pink Tourmaline Marquise
3.10 Carats Mismatch Tourmaline Pair, Pink Tourmaline Marquise
Free Shipping
W 0.28 in D 0.16 in L 0.32 in
1.53 Carat 14K Tourmaline & Rhodolite Dangle 3 Stone Dangle Earrings
Located in Amagansett, NY
.53 Total Carat 14K Gold French Wire Rhodolite Trillion Dark Pink Tourmaline Oval Light Pink
Category

2010s Indian Modern Dangle Earrings

Materials

Tourmaline, Rhodolite, 14k Gold

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

1.37 Carat 14K French Wire Tourmaline & Rhodolite 3 Stone Dangle Earrings
Located in Amagansett, NY
1.37 Total Carat 14K Gold French Wire Pink Tourmaline Pear Rhodolite Round Pink Tourmaline Pear
Category

2010s Indian Modern Dangle Earrings

Materials

Tourmaline, Rhodolite, 14k Gold

7.70 Carats Emerald Cut Chrome Tourmaline and Trapezoid Diamond 3 Stone Ring
By Kiersten Elizabeth
Located in Charleston, SC
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

3.4 Carat Citrine & Tourmaline 14K French Wire 3 Stone Dangle Earrings
Located in Amagansett, NY
green Tourmaline pears, and hunter green Tourmaline oval cut stones. They are set in a 14K gold plated
Category

2010s Indian Modern Dangle Earrings

Materials

Citrine, Tourmaline, 14k Gold, Gold Plate

1.90 Carats Mix Matched Tourmaline Pair, Pink Tourmaline Marquise Cut Stones
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 1.90 Carats Shape - Marquise Size - 8x4 to 10x5 mm Pieces - 3
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

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

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

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

2.80 Carats Green Tourmaline Match Pair, Green Tourmaline Round and Oval Gems
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 2.80 Carats Shape - Round / Oval Size - 5 to 9x7 MM Pieces - 3
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

2.30 Carats Mix Matched Tourmaline Pair, Pink Tourmaline Marquise and Pear Gems
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 2.30 Carats Shape - Pear , Marquise Size - 8x4 to 11x6 MM Pieces - 3
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

Natural Green Tourmaline and Diamond Halo Ring 3 Carats 14k Yellow Gold
Located in Laguna Niguel, CA
It comes with the appraisal by GIA GG/AJP Green Tourmaline = 2.80 Carat ( 8 x 7 mm ) Cut: Emerald
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

Natural Green Tourmaline and Diamond Halo Ring 3 Carats 14k Yellow Gold
Located in Laguna Niguel, CA
It comes with the appraisal by GIA GG/AJP Green Tourmaline = 2.80 Carat ( 8 x 7 mm ) Cut: Emerald
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

3, 05 Carat Tourmaline Diamond Elegant Fashion Pendant for Her 14K Gold
By Natkina
Located in Montreux, CH
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

Pink Tourmaline Necklace Handmade Bezels Custom Cut Pink Tourmaline 3.43 Carats
By Five Star Jewelry
Located in Austin, TX
This necklace was carefully hand fabricated in our shop. We selected the 3 cabochon pink tourmaline
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Tourmaline, 14k Gold, Rose Gold

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

2010s American Modern Bridal Rings

Materials

Diamond, Rubelite, Tourmaline, Platinum

0.98 Carat Natural Umba River Vivid Pink Rubellite Tourmaline
Located in Hua Hin, TH
Survey: High clarity for a Type 3 stone. Totally eye clean. Gem Type: Tourmaline Gem Variety: Rubellite
Category

2010s Tanzanian Loose Gemstones

Materials

Tourmaline

0.98 Carat Natural Umba River Vivid Pink Rubellite Tourmaline
0.98 Carat Natural Umba River Vivid Pink Rubellite Tourmaline
Free Shipping
W 0.28 in D 0.17 in L 0.23 in
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

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

Peter Suchy 6.56 Carat Tourmaline Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Exquisite Peter Suchy 6.56 Carat baby pink fantasy cut Tourmaline Diamond Platinum Pendant Necklace
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Tourmaline, Platinum

Cober “Tourmalines” with 4.14 Carat Tourmalines, Diamonds and Sapphires Earrings
By Vincent Cober
Located in OSS, NH
Tourmalines, Diamonds and Sapphires Earrings Cober Jewellery 18 Carat White Gold Earrings with Diamonds
Category

2010s Dutch Contemporary Lever-Back Earrings

Materials

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

7.48 Carat Tanzanite and Pink Tourmaline 3-Stone Ring in Rose and Yellow Gold
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Jewelers in Los Angeles. Tanzanite, 14.38 x 8.02mm, 7.48 carats Pink tourmalines, 7.00 x 5.00mm, 1.98
Category

21st Century and Contemporary American Artisan Three-Stone Rings

Materials

Tanzanite, Tourmaline, Multi-gemstone, Rubelite, 18k Gold, Rose Gold, Ye...

Mattioli Tourmaline 18 Carat Gold Ring
By Mattioli
Located in Berlin, DE
tourmaline and inner frame in 18 K yellow gold. Inside signed: Mattioli and hallmarked: 750, star 2279 AL
Category

21st Century and Contemporary Italian More Rings

Materials

Tourmaline, 18k Gold, Yellow Gold

Fine Indicolite Tourmaline Diamond Platinum 3-Stone Ring
Located in Beverly Hills, CA
A fine and natural tourmaline with a gemmy greenish-blue color giving it the name “indicolite” in
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Tourmaline, Indicolite, Platinum

3.25 Carats Faceted Dark Green Tourmaline Oval Shape Ring Gemstone
Located in Peshawar, PK
Faceted Tourmaline Weight: 3.25 Carats Dimension: 10.3x7.5x5.6 Mm Origin: Africa Shape: Oval
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline, Chrome Tourmaline

510.00 Carats Top Quality Rubellite Tourmaline Plain Beads Natural Gemstone
Located in Jaipur, RJ
Carats Strand - 3 Shape -Beads
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

4.62 Carat Oval Cut Green Tourmaline 3-Stone Ring with Dia Halo in 18Y ref1612
By Diamond Town
Located in New York, NY
stunning oval-cut green tourmalines, totaling a remarkable 4.62 carats. These vibrant gemstones are framed
Category

21st Century and Contemporary Cocktail Rings

Materials

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

1.00 Carat Green Tourmaline Diamond Rose Gold Ring
Located in Stamford, CT
Late 1800's, Handmade tourmaline and diamond ring. 1 round eight sided tourmaline center stone with
Category

Antique Mid-19th Century Fashion Rings

Materials

Tourmaline, Diamond, Gold, 14k Gold, Rose Gold

7.13 Carat Tourmaline Diamond Platinum Art Deco Dangle Earrings
Located in Stamford, CT
Vintage 1920's Art Deco tourmaline handmade dangle earrings. Set in platinum with 8 old euro accent
Category

Early 20th Century Dangle Earrings

Materials

Diamond, Tourmaline, Platinum

2.35 Carats Mix Matched Tourmaline Pair, Green and Pink Gems
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 2.35 Carats Shape - Marquise Size - 8x4 to 11x5.5 MM Pieces - 3
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

2.35 Carats Mix Matched Tourmaline Pair, Green and Pink Gems
2.35 Carats Mix Matched Tourmaline Pair, Green and Pink Gems
Free Shipping
W 0.32 in D 0.16 in L 0.44 in
3.20 Carats Faceted Natural Rubellite Tourmaline Gemstone Emerald Shape
Located in Peshawar, PK
Loose Rubellite Weight: 3.20 Carats Dimension: 10.1x6.8x5.6 Mm Origin: Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Rubelite, Tourmaline

Cellini Platinum, 7.47 Carat Diamond and 70.11 Carat Chrome Tourmaline Necklace
By Cellini
Located in New York, NY
the connectors. The total length of the necklace is 16-3/4" long. 22 Chrome Tourmalines = 70.11 carats
Category

Early 2000s Modern Link Necklaces

Materials

Diamond, Tourmaline, Platinum

Vintage Tourmaline and 9 Carat Gold Ring
Located in Chipping Campden, GB
The gorgeous deep green tourmaline stone is set within four claws and measures 6carat. The ring is
Category

Vintage 1960s British Modern Cocktail Rings

Materials

Tourmaline, Gold

3-1/20ct. 14K Gold Tourmaline/Sapphire/Tsavorite Water Melon Pendant Necklace
By Affinity Designs LLC
Located in New York, NY
Indulge in the adorable design of our Pink Tourmaline, Yellow Sapphire and Tsavorite Water Melon
Category

2010s Asian Contemporary Pendant Necklaces

Materials

Sapphire, Tourmaline, Tsavorite, 14k Gold

Vintage 3 Carat Green Tourmaline and Diamond 18k Gold Cocktail Engagement Ring
Located in Santa Barbara, CA
Centered by a captivating, vivid mint green tourmaline, this alluring gemstone engagement ring
Category

Vintage 1980s Art Deco Engagement Rings

Materials

18k Gold

Edwardian 1.15 Carat Tourmaline Platinum Intertwined Snake Stickpin
Located in Philadelphia, PA
Designed as an intertwined snake With an old European cut brown tourmaline accenting the head and
Category

Early 20th Century Edwardian Brooches

Materials

Tourmaline, Platinum

Sleek 10 Carat Tourmaline and Diamond Enhancer Necklace
Located in Santa Barbara, CA
A classic contemporary pendant necklace presenting a transfixing 10.16 carat tourmaline set with
Category

21st Century and Contemporary Contemporary Pendant Necklaces

Materials

Diamond, Tourmaline, Platinum

2.00 Carat Natural Loose Cushion Shape Colourless African Tourmaline Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 2.00 Carats Dimension: 7.9 x 7 x 5.2 Mm Colour: Colourless Origin
Category

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

Materials

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

Cober with Tourmalines of 7.04 and 0.68 Carat and Diamonds 0.15 Carat Pendant
By Vincent Cober
Located in OSS, NH
Cober Jewellery white gold pendant with Tourmalines and diamonds This is a white gold 18K pendant
Category

2010s Dutch Contemporary Pendant Necklaces

Materials

Diamond, Tourmaline, 18k Gold, White Gold

Peter Suchy 43.13 Carat Black Tourmaline White Gold Dangle Earrings
By Peter Suchy
Located in Stamford, CT
Natural untreated black round tourmaline mineral dangle earrings in 14k white gold. 2 round black
Category

21st Century and Contemporary Dangle Earrings

Materials

Tourmaline, White Gold, Gold, 14k Gold

8.50 Carat Deep Green Tourmaline Diamond Gold Cocktail Ring
Located in Stamford, CT
Deep large oval green Tourmaline and diamond cocktail ring. Handmade 18k yellow and white gold
Category

20th Century Fashion Rings

Materials

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

105.50 Carats Pink Tourmaline Beads Top Fine Quality For Jewelry Natural Gem
Located in Jaipur, RJ
Gemstone - Tourmaline Weight - 105.50 Carats Strand - 3 Shape -Beads Size - 2.5 To 4 MM
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Tourmaline, Rubelite

346.25 Carats Pink Tourmaline Beads Top Fine Quality For Jewelry Natural Gem
Located in Jaipur, RJ
Gemstone - Tourmaline Weight - 346.25 Carats Strand - 8 Shape -Beads Size - 3 To 6 MM
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

Peter Suchy 17.9 Carat Tourmaline Diamond Yellow Gold Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Green cylinder tourmaline and trilliant cut accent diamond. 14k yellow gold pendant necklace, made
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Tourmaline, Gold, 14k Gold, Yellow Gold

7.32 Carat Natural Green Tourmaline Ring with 1.92 Carat Natural Diamonds
Located in Ramat Gan, IL
This 7.32 carat natural tourmaline diamond ring brings a lush touch of color to your fine jewelry
Category

2010s Israeli Art Deco Cocktail Rings

Materials

Diamond, Tourmaline, 14k Gold

Peter Suchy 1.50 Carat Tourmaline Diamond Yellow Gold Dangle Earrings
By Peter Suchy
Located in Stamford, CT
Tourmaline and diamond dangle earrings. Custom cut rectangular green tourmalines dangles, with 2
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Tourmaline, Gold, 14k Gold, Yellow Gold

7.90 Carat Natural Yellow Canary Tourmaline Loose Gemstone For Jewelry Making
Located in Peshawar, PK
Faceted Tourmaline Weight: 7.90 Carats Dimension: 13.6x12.2x7.8 Mm Origin: Madagascar Africa
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline

98.90 Carats Bi Color Tourmaline Oval cabochon very good quality color variety
Located in Jaipur, RJ
Gemstone - Tourmaline bi color cabs Weight - 98.90 carats Shape - Oval Size - Size - 18x14 To 24x18
Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Tourmaline

.65 Carat Pink Tourmaline Diamond Gold Swirl Design Bismark Bracelet
Located in Stamford, CT
Pink Tourmaline and diamond bracelet. Swirl design center plaque, with 12 round accent diamonds
Category

21st Century and Contemporary Modern Chain Bracelets

Materials

Diamond, Tourmaline, 14k Gold, Yellow Gold, Gold

0.90 Carat Natural Loose Ink Blue Tourmaline Cushion Shape Gem For Jewellery
Located in Peshawar, PK
Loose Ink Blue Tourmaline Weight: 0.90 Carats Dimension: 7.9 x 5.5 x 3 Mm Colour: Ink Blue Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Scrives 4.17 Carat Green Tourmaline Three Stones 22 Karat Gold Handmade Ring
By Scrives
Located in Paris, Paris
This delicate ring is composed of three green tourmalines faceted of 4.17 cts total weight. The two
Category

2010s Contemporary Cluster Rings

Materials

Tourmaline, Gold, 22k Gold

25 Carat Rainbow Gemstone Unisex Tourmaline Tennis Bracelet
Located in Santa Barbara, CA
Square Cut 25.00 Carats Total Dimensions: 7 3/4" L x 1/4" W x 3/16" T Weight: 32.3 grams Graded by GIA
Category

21st Century and Contemporary Contemporary Tennis Bracelets

Materials

Amethyst, Aquamarine, Citrine, Tourmaline, Gold, 18k Gold, Yellow Gold

Peter Suchy 24.39 Carat Pink Tourmaline Diamond Yellow Gold Pendant Necklace
By Peter Suchy
Located in Stamford, CT
24.39 carat custom cut pink tourmaline and diamond pendant necklace. 18k yellow gold pendant
Category

21st Century and Contemporary Pendant Necklaces

Materials

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

Scrives 5.6 Carat Multicolor Tourmaline Pink Orange Yellow 22 Karat Gold Ring
By Scrives
Located in Paris, Paris
natural tourmaline with no treatment. In the stone you can distinct 3 different colors: pink, yellow and
Category

2010s Contemporary Cluster Rings

Materials

Tourmaline, Gold, 22k Gold

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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.
Questions About 3 Carat Tourmaline
  • 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.