40 Carat
63
to
552
3,886
796
960
756
570
121
101
100
76
53
23
9
5
2
1
1
1
8
140
1,813
3,118
44
41
169
101
69
91
109
117
148
141
5
98
86
61
45
39
3,637
1,358
107
5,050
52
4,150
2,305
1,698
1,459
1,262
4,383
941
649
408
403
10
10
7
1625
418
298
216
169
to
Sort By
40 Carat Round Brilliant Cut Diamond Riviera Necklace
By Antinori Fine Jewels
Located in Rome, IT
40 Carat Round Brilliant Cut Diamond Riviera Necklace
Category
2010s Italian Modern Chain Necklaces
Materials
Diamond, White Diamond, Emerald, Platinum
.40 Carat Diamond White Gold Pendant
Located in Atlanta, GA
Shape: Round Brilliant
Carat Weight: .40 carat
Color: G
Clarity: VS1
Side Stone Details:
Shape: Round
Category
Early 2000s Unknown Contemporary Pendant Necklaces
Materials
White Diamond, 18k Gold, White Gold
.40 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Brilliant
Carat Weight: .40 carat
Color: F
Clarity: VS1
Side Stone Details:
Shape: Old European
Category
Vintage 1920s Unknown Art Deco Engagement Rings
Materials
White Diamond, Platinum
.40 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Details:
Weight: .40 carat
Cut: Old European Brilliant
Color: H
Clarity: VS
Side Diamond Details:
Weight
Category
Vintage 1920s Unknown Art Deco Engagement Rings
Materials
White Diamond, Platinum
.40 Carat Diamond Yellow Gold Engagement Ring
Located in Atlanta, GA
: Old European Brilliant
Carat Weight: .40 carat
Color: H
Clarity: VS2
Finger to Top of Stone
Category
Antique 1890s Unknown Victorian Engagement Rings
Materials
White Diamond, 14k Gold, Yellow Gold
GIA Certified 40 Carat Emerald Cut Diamond Riviera Necklace
By Antinori Fine Jewels
Located in Rome, IT
40 Carat Emerald Cut Diamond Riviera Necklace
Category
2010s Italian Modern Chain Necklaces
Materials
Diamond, White Diamond, Emerald, 18k Gold, White Gold
.40 Carat Total Weight Platinum Wedding Band
Located in Atlanta, GA
:
Weight: .40 carat, total weight
Cut: Antique Single Cut
Color: F
Clarity: VS
Finger to Top of Stone
Category
Vintage 1920s Unknown Art Deco Band Rings
Materials
White Diamond, Platinum
GIA Certified .40 Carat Diamond Engagement Ring
Located in Atlanta, GA
Details:
GIA REPORT#5202199344
Weight: .40 carat
Cut: Old European
Color: H
Clarity: SI2
Side Diamond
Category
Vintage 1930s Unknown Art Deco Engagement Rings
Materials
White Diamond, Platinum
.40 Carat Total Weight Diamond Platinum Engagement Ring
Located in Atlanta, GA
: Antique Single Cut
Carat Weight: .40 Carat Total Weight
Color: F
Clarity: SI
Finger to Top of Stone
Category
Vintage 1910s Unknown Edwardian Engagement Rings
Materials
White Diamond, Platinum
.40 Carat Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Diamond Details:
Weight: .40 Carat
Cut: Old European Brilliant
Color: J
Clarity: VS1
Side Diamond Details
Category
Vintage 1920s Unknown Art Deco Engagement Rings
Materials
White Diamond, Platinum
Important 40 Carat Aquamarine Ring With Side Diamonds 14K Gold
Located in Carlsbad, CA
Aquamarine = 40 Carat
Diamonds = 0.18 Carats
( Color: G, Clarity: SI )
Metal: 14K Gold
Ring Size
Category
Late 20th Century Art Deco Cocktail Rings
Materials
Aquamarine, Diamond, White Diamond, Gold, 14k Gold, Yellow Gold
Art Deco Platinum Sapphire .40 Carat Engagement Ring
Located in Scotts Valley, CA
center stone is estimated .40 carats, and measures 4.9mm round. The filigree is beautiful on this ring
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Sapphire, Platinum
.40 Carat Diamond Art Deco Platinum Engagement Ring
Located in Stamford, CT
1940's Art Deco Platinum diamond engagement ring. EGL certified transitional brilliant cut .40
Category
Early 20th Century Engagement Rings
Materials
Diamond, Platinum
.40 Carat Total Weight Diamond White Gold Wedding Band
Located in Atlanta, GA
Shape: Antique Single Cut
Carat Weight: .40 carat total weight
Color: G
Clarity: SI1
Finger to Top of
Category
Vintage 1930s Unknown Art Deco Band Rings
Materials
White Diamond, 18k Gold, White Gold
.40 Carat Total Weight Blue Sapphire Yellow Gold Pin
Located in Atlanta, GA
:
Weight: .40 carat, total weight
Cut:Old European Brilliant
Color: Blue, Natural and Unheated
Pearl
Category
Antique 1890s Unknown Victorian Brooches
Materials
Natural Pearl, Sapphire, Blue Sapphire, 14k Gold, Yellow Gold
.40 Carat Total Weight Ruby Yellow Gold Engagement Ring
Located in Atlanta, GA
: Natural Ruby
Shape: Antique Cushion
Carat Weight: .40 carat, total weight.
Color: Red
Side Stone Details
Category
Antique 1890s Unknown Victorian Engagement Rings
Materials
White Diamond, Ruby, 14k Gold, Yellow Gold
AIG Certified 40 Carat Tanzanite Diamonds 18k Gold Ring
Located in Massafra, IT
tanzanite cabochon cut of 40 carats, very beautiful color and quality, and round brilliant cut diamonds of
Category
21st Century and Contemporary Contemporary Cocktail Rings
Materials
18k Gold
40 Carat Natural Fancy Multicolored Diamond Bead Necklace in 18 Karat
By MOGULDIAM INC
Located in New York, NY
and brown hues ) weighing 40 carats. Handcrafted in USA by a master jeweler in 18k gold. Elegant and
Category
Early 2000s American Contemporary Beaded Necklaces
Materials
Diamond, 18k Gold
40 Carat Natural Fancy Multicolored Diamond Bead Necklace in 18 Karat
By MOGULDIAM INC
Located in New York, NY
and brown hues ) weighing 40 carats. Handcrafted in USA by a master jeweler in 18k gold. Elegant and
Category
Early 2000s American Contemporary Beaded Necklaces
Materials
Diamond, 18k Gold
40 Carats Diamonds Cuban Two-Tone Necklace Chain 14 Karats Gold 22''
Located in Great Neck, NY
40 Carats Total Weight Heavy Gold Cuban Necklace Chain 14 Karats Gold
22 inch, 15 mm wide, Average
Category
2010s American Chain Necklaces
Materials
Diamond, White Diamond, Gold, 14k Gold, Rose Gold, White Gold
40 Carats Diamonds Cuban Two-Tone Necklace Chain 14 Karats Gold 22''
Located in Great Neck, NY
40 Carats Total Weight Heavy Gold Cuban Necklace Chain 14 Karats Gold
22 inch, 15 mm wide, Average
Category
2010s American Chain Necklaces
Materials
Diamond, White Diamond, Gold, 14k Gold, Rose Gold, White Gold
Sapphire Necklace 14K Gold Emerald Cut Sapphire .40 Carat Pendant
By Five Star Jewelry
Located in Austin, TX
this pendant is really gorgeous!
Material: 14K Gold
Sapphire Weight: .40 carat
Sapphire Shape: Emerald
Category
21st Century and Contemporary American Modern Pendant Necklaces
Materials
Sapphire, Yellow Gold, 14k Gold
40+ Carat Aquamarine Ring
Located in Saint Louis, MO
40.55ct emerald cut aquamarine accented with diamonds and sapphires set in 18kt white gold.
Incredible color and size.
Ring size 6
Category
21st Century and Contemporary American Art Deco Cocktail Rings
Materials
Aquamarine, Diamond, Blue Sapphire, 18k Gold, White Gold
Retro 40 Carat Citrine and 18 Karat Yellow Gold Statement Cocktail Ring
Located in beverly hills, CA
A boldly scaled Retro ring featuring a magnificent citrine of approximately 40 carats highlighted
Category
Vintage 1940s Unknown Retro Cocktail Rings
Materials
18k Gold, Yellow Gold
Koala Pendant in .40 Carats of Tsavorites in 18 Karat White Gold
Located in Atlanta, GA
Item Details:
Metal Type: 18 Karat White gold
Weight: 1 gram
Features Tsavorites, .40 Carats
Category
1990s Unknown Modern Pendant Necklaces
Materials
Tsavorite, 18k Gold
Exquisite .40 Carat Natural Diamond 14 Karat Solid Yellow Gold Stud Earrings
Located in Los Angeles, CA
Exquisite .40 Carats Natural Diamond 14K Solid Yellow Gold Stud Earrings
Amazing looking piece
Category
2010s American Stud Earrings
Materials
Diamond, 14k Gold, Yellow Gold
Peter Suchy .40 Carat Diamond White Gold Diamond by the Yard Necklace
By Peter Suchy
Located in Stamford, CT
.40 carat diamond by the yard 16 inch necklace in 14k white gold designed and crafted in the Peter
Category
21st Century and Contemporary Chain Necklaces
Materials
Diamond, Gold, 14k Gold, White Gold
.40 Carat Total Weight Art Deco Diamond Platinum Onyx Engagement Ring
Located in Atlanta, GA
:
Weight: .40 carat total weight
Cut: Old European brilliant
Color: F-G
Clarity: VS
Onyx Details:
Weight
Category
Vintage 1930s Unknown Art Deco Engagement Rings
Materials
Diamond, Onyx, Platinum
1910 Edwardian Platinum .40 Carat Old European Brilliant Diamond Engagement Ring
Located in Atlanta, GA
:
Shape: Old European Brilliant
Carat Weight: .40 carat
Color: I
Clarity: SI2
Side Stone Details
Category
Vintage 1910s Unknown Edwardian Engagement Rings
Materials
White Diamond, Platinum
40 Carat Diamond Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
luxurious 18K white gold. Embrace the allure of 80 round diamonds, totaling an impressive 40.01 carats
Category
2010s Unknown Modern Chain Necklaces
Materials
Diamond, White Diamond, 18k Gold
David Webb Platinum 40 Carat Diamond Feather Set of Two Brooches
By David Webb
Located in New York, NY
40 carats in round and baguette cut H/VS-SI1 diamonds.
Each brooch measures 3 5/8" x 1".
Brooches
Category
20th Century American Modern Brooches
Materials
Diamond, Platinum
14 Karat White Gold .40 Carat Round Natural Diamond Eternity Band Ring
By Blue Nile
Located in Baltimore, MD
14 Karat White Gold .40 Carat Round Natural Diamond Eternity Band Ring
Metal: 14k white gold
Category
21st Century and Contemporary American Modern Band Rings
Materials
Diamond, White Gold
14 Karat White Gold .40 Carat Half Natural Diamond Wedding Band Ring
Located in Baltimore, MD
14 Karat White Gold .40 Carat Natural Diamond Half Wedding Band Ring Size 5
Metal: 14k white gold
Category
21st Century and Contemporary American Modern Band Rings
Materials
Diamond, 14k Gold, White Gold
.40 Carat Total Weight Edwardian Diamond 14 Karat Yellow Gold Engagement Ring
Located in Atlanta, GA
Diamond Details:
Weight: .40 carat total weight
Cut: Old European brilliant
Color: I
Clarity: VS-SI
Category
Antique Early 1900s Unknown Edwardian Engagement Rings
Materials
Diamond, Yellow Gold
Golden South Sea Pearl Diamond Drop Earrings .40 Carat 18 Karat Yellow Gold
By Harbor Diamonds
Located in New York, NY
diamonds weighing .40 carats total weight.
Color G-H
Clarity SI
Category
2010s American Contemporary Drop Earrings
Materials
Diamond, South Sea Pearl, Gold
Vintage Diamond Band Ring, .40 Carat Diamond Milgrain Wedding Band
By Five Star Jewelry
Located in Austin, TX
Total Diamond Weight: .40 Carats
Diamond Shape: Round Brilliant
Diamond Clarity:
Ring Size: 7
Band
Category
21st Century and Contemporary American Modern Wedding Rings
Materials
Diamond, Gold, 14k Gold, White Gold
Diamond Ring .40 Carats Silver
Located in Carlsbad, CA
Diamonds = 0.40 carats
( Color: G, Clarity: SI )
Sterling Silver
Ring Size 6 1/4
Jewelry Gift Box
Category
21st Century and Contemporary Modern Engagement Rings
Materials
Diamond, White Diamond, Silver, Sterling Silver
Diamond Ring .40 Carats Silver
Located in Carlsbad, CA
Diamonds = 0.40 carats
( Color: G, Clarity: SI )
Sterling Silver
Ring Size 6 1/4
Jewelry Gift Box
Category
21st Century and Contemporary Modern Engagement Rings
Materials
Diamond, White Diamond, Silver, Sterling Silver
Platinum, Diamond and 40 Carat Oval Amethyst Ladies Cocktail Ring Size 5.75
Located in Birmingham, AL
Absolutely Stunning Ladies Cocktail Ring!!! Made in Platinum, this ring features a beautiful 40
Category
20th Century Unknown Contemporary Cocktail Rings
Materials
Amethyst, Diamond, Platinum
40 Carat Marquise And Baguette Cut Diamond Chandelier Platinum Choker Necklace
By Gad & Co.
Located in Miami, FL
. All bearing eye-clean clarity and F-G color. The necklace boasts an impressive 40 carats total (approx
Category
2010s North American Art Deco Choker Necklaces
Materials
Diamond, Platinum
40 Carat Colombian Vivid Green Muzo No Oil Set
By Emilio!
Located in New York, NY
Showcasing certified Colombian emeralds totaling approximately 40 carats for the set of necklace
Category
21st Century and Contemporary Three-Stone Rings
Materials
Emerald
Meghna Jewels .40 Carat Very Light Pink Diamond Fancy Pear Shape VVS1 GIA
By Meghna Jewels
Located in Hoffman Estate, IL
An exceptional .40 carat VVS1 Clarity fancy pear cut very light pink diamond certified by GIA. We
Category
21st Century and Contemporary Contemporary Loose Gemstones
Materials
Pink Diamond
.40 Carat Brilliant Cut Engagement Ring
Located in Atlanta, GA
Ring Size: 7.25
Metal Type: 14K White Gold [Hallmarked, and Tested]
Weight: 3.3grams
Total Diamond Weight: .70ct
Center Diamond Details:
Weight: .40ct
Cut: Old European brilliant...
Category
Vintage 1920s Unknown Art Deco Engagement Rings
40 Carat Pear Shape Amethyst and Diamond Pendant in 18k Yellow Gold with Chain
By Sarosi By Timeless Gems
Located in Los Angeles, CA
newest addition to your fine jewelry collection!
Amethyst, 26.50 x 21.32 x 13.62mm, 40 carats
8 round
Category
21st Century and Contemporary North American Artisan Pendant Necklaces
Materials
Amethyst, Diamond, 18k Gold, White Gold, Yellow Gold, Gold
Ruby and Baguette Diamond Ring, 18 Carat Yellow Gold, Est .40 Carat, Mid-1960s
Located in Canterbury, GB
platinum mount, The large ruby is est. 1.43carat the diamonds totalling . 40 carat. This ring size is US
Category
Vintage 1960s Solitaire Rings
Materials
Diamond, Ruby, Yellow Gold
Tiffany & Co Elsa Peretti .40 Carat Diamond by the Yard Platinum Bracelet
By Elsa Peretti for Tiffany & Co.
Located in Stamford, CT
, .40 Carat Diamond by the Yard Platinum Bracelet. 5 bezel set round brilliant cut diamonds, G VS approx
Category
21st Century and Contemporary Chain Bracelets
Materials
Diamond, Platinum
40 Carat Oval Ethiopian Opal Pendant / Necklace 14 Karat Yellow Gold Necklace
Located in New York, NY
Approximately 40 Carat Oval Ethiopian Opal Pendant / Necklace 14 Kt white Gold Necklace with
Category
2010s Pendant Necklaces
Materials
Opal, Gold, 14k Gold, White Gold
Retro Brooch With 40 Carat Emerald Cut Citrine in Rose Gold in Scrolling Mount
Located in New York, NY
This Bold and glamorous brooch features a 40 carat emerald cut citrine set in a 18k rose gold
Category
Vintage 1940s American Retro Brooches
Materials
Citrine, Rose Gold
Free Shipping
H 1.75 in W 1.25 in D 0.5 in
40 Carat Natural Emerald Cocktail Tennis Bracelet 14 Karat Yellow Gold
Located in New York, NY
the Emeralds is approximately 40 carat.
The bracelet is expertly crafted with 22.12 grams of 14
Category
2010s Tennis Bracelets
Materials
Emerald, 14k Gold, Yellow Gold
Magnificent 40 Carat Emerald and Diamond Bracelet
By GEMME
Located in New York, NY
The Ultimate Emerald Bracelet! Major statement!
Emeralds each weighing between 2.40-2.80 Carat each
Category
2010s American Link Bracelets
Materials
Diamond, Emerald
18 Karat Horse Pin .40 Carat Diamonds
Located in New York, NY
3D Bronco Brooch Pin
.40ct natural diamonds,
Rounds, Full Cuts.
H-color Vs-2 clarity.
18kt yellow gold
intricate flowing hair details
15.8 grams.
Overall: 1.7 x 1.0 inch
De...
Category
2010s American Brooches
Materials
Diamond, 18k Gold, Yellow Gold
40 Carat Ruby Cabochon Gold Diamond Ring
Located in New York, NY
Impressive 18k yellow gold cocktail ring, set with an approx. 40cts ruby cabochon (measuring approx. 21.3 x 16.5 x 10.5mm) , diamonds approx. 1.90ctw. ring size - 8, ring top is 30m...
Category
20th Century More Rings
Materials
Diamond, Ruby, Gold
40 Carat Natural Sleeping Beauty Turquoise Cocktail Clip Stud Earring 18 KYG
Located in New York, NY
Approximately 40 Carat Natural Sleeping Beauty Turquoise Cocktail Clip Stud Earring 18 KYG
natural
Category
Early 20th Century Clip-on Earrings
Materials
Turquoise, 18k Gold
40 Carat Malachite and 2 Carat Diamond Tennis Bracelet in 925 Sterling Silver
Located in Houston, TX
Beautifully handcrafted silver 40 Carat Malachite and 2 Carat Diamond Tennis Bracelet, designed
Category
21st Century and Contemporary American Art Deco Tennis Bracelets
Materials
Diamond, Malachite, Silver, Sterling Silver
Free Shipping
W 0.4 in L 7.5 in
.40 Carat Diamond White Gold Dome Band Ring
Located in Stamford, CT
Two row 14k white gold diamond dome band ring. 10 round cut diamonds set in 14k white gold.
10 round diamonds, G-H VS approx. .40cts
Size 7.25 and sizable
14k white gold
Stamped:...
Category
21st Century and Contemporary Band Rings
Materials
Diamond, Gold, 14k Gold, White Gold
.40 Carat Diamond Ruby Yellow Gold Bangle Bracelet
Located in Stamford, CT
Diamond and ruby 14k yellow gold bangle bracelet. 26 round diamonds with 22 round rubies, channel set. Hinged bangle bracelet with an angular design. 7 inches
26 round diamonds, G-H...
Category
21st Century and Contemporary Bangles
Materials
Diamond, Ruby, Gold, 14k Gold, Yellow Gold
.40 Carat Amethyst Diamond Rose White Gold Earrings
Located in Stamford, CT
1940's rose and white gold Amethyst diamond clip post earrings. 8 round Amethyst and 8 round diamonds set in 14k rose and white gold.
8 round rose cut diamonds, approx. total we...
Category
Early 20th Century Lever-Back Earrings
Materials
Amethyst, Diamond, Gold, 14k Gold, Rose Gold, White Gold
.40 Carat Diamond Yellow White Gold Engagement Ring
Located in Stamford, CT
Handmade 1920's Art Deco diamond engagement ring. Open work 14k yellow gold setting with ring with white gold accents and a .40ct Ole European cut center stone. engraved 12-25-25.
...
Category
Early 20th Century Engagement Rings
Materials
Diamond, 14k Gold, White Gold, Yellow Gold
.40 Carat Diamond Tri Color Gold Band Ring
Located in Stamford, CT
Designer ADE diamond ring. The shank of the ring has a unique shape. It is flat on one side and curved on the other. It is made from three separate bands of gold, rose, white and ...
Category
Late 20th Century Band Rings
Materials
Diamond, Gold, 14k Gold, Rose Gold, White Gold, Yellow Gold
Certified 40 Carat Natural Unheated Ceylon Yellow Sapphire Diamond Cocktail Ring
Located in Lisbon, PT
Certified 40-carat natural unheated Ceylon (Sri Lankan) yellow sapphire, ruby and diamond cluster
Category
Vintage 1940s Unknown Art Deco Cocktail Rings
Materials
Diamond, Ruby, Yellow Sapphire, Gold, 14k Gold, White Gold, Yellow Gold
- 1
- ...
Get Updated with New Arrivals
Save "40 Carat", and we’ll notify you when there are new listings in this category.
40 Carat For Sale on 1stDibs
Surely you’ll find the exact 40 carat you’re seeking on 1stDibs — we’ve got a vast assortment for sale. 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. Our collection of these items for sale includes 708 vintage editions and 1098 modern creations to choose from as well. You’re likely to find the perfect 40 carat among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those 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 40 carat from Luigi Ferrara, LB Exclusive and Tiffany & Co. — each of whom created a beautiful version of this treasured accessory — is worth considering. A 40 carat can be a stylish choice for most occasions, but Diamond rings, from our inventory of 1364, can add a particularly distinctive touch to your look, day or night. 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 oval cut and old european cut alternatives. When shopping for a 40 carat, you’ll find that there are less available pieces for unisex or men today than there are for women.
How Much is a 40 Carat?
The price for a 40 carat starts at $190 and tops out at $2,500,000 with these rings, on average, selling for $3,662.
More Ways To Browse
Retro Engagement Rings With Sapphire Accents
Art Nouveau Gold Emerald Necklace
Topaz And Black Onyx
Tiffany Style Rings Diamond Solitaire
Engagement Platinum Onyx
Platinum Onyx Diamond Engagement Rings
Unheated Sapphire Halo Ring
Opal Star Pendant
Rose Quartz And Pearl Earrings
Yellow Chrysoberyl Ring
14 Karat Yellow Gold Opal And Diamond Pendant
Victorian Platinum And 18 Karat
Cross Over Platinum
Round Leaf 40
Untreated Star
Semi Bezel Diamond Ring
Art Deco Diamond Wedding Bands Size 5
Fancy Green Diamond Earrings