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40 Carat Diamond Ring

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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

.40 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 5 Metal Type: Platinum Weight: 3.2 grams Center Diamond 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 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 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
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Vivid Diamonds 3.38 Carat Tsavorite and Diamond Ring
By Vivid Diamonds
Located in Miami, FL
.40 carats total, G color, VS clarity, and 84 round brilliant and baguette cut diamonds weighing
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Tsavorite, 18k Gold, White Gold

.40 Carat Diamond Yellow Gold Engagement Ring
Located in Atlanta, GA
Ring Size: 6.25 Metal Type: 14 karat Yellow Gold Weight: 3.1 grams Center Diamond Details Shape
Category

Antique 1890s Unknown Victorian Engagement Rings

Materials

White Diamond, 14k Gold, Yellow Gold

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 Ruby Cabochon Gold Diamond Ring
Located in New York, NY
. 21.3 x 16.5 x 10.5mm) , diamonds approx. 1.90ctw. ring size - 8, ring top is 30mm x 25mm. Tested 18k
Category

20th Century More Rings

Materials

Diamond, Ruby, 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
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
Category

Late 20th Century Band Rings

Materials

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

Peter Suchy .40 Carat Diamond Platinum Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
Peter Suchy custom-made diamond platinum antique inspired wedding band with alternating double
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

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, White Gold, 14k Gold

Art Deco 1.15 Carat Pink Sapphire & .40 Carat Diamond Platinum Ring
Located in Scotts Valley, CA
sapphire and diamond platinum ring. This one has so much life in the stone! It glows! Would make lovely
Category

Early 20th Century Art Deco Engagement Rings

Materials

Sapphire, Diamond, Pink Sapphire, Platinum

40+ Carat Aquamarine Ring
Located in Saint Louis, MO
40.55ct emerald cut aquamarine accented with diamonds and sapphires set in 18kt white gold
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Blue Sapphire, Diamond, Aquamarine, White Gold, 18k Gold

Tiffany & Co. Platinum .40 Carat Diamond Engagement Ring
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum .40ct Diamond Engagement Ring 6 Metal: Platinum Size: 6 Diamond: Round
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Tiffany & Co. Platinum .40 Carat Diamond Engagement Ring
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum .40ct Diamond Engagement Ring 4.5 Metal: Platinum Size: 4.5 Diamond: Round
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

EGL Certified .40 Carat Diamond White Gold Engagement Ring
Located in Stamford, CT
1940's Art Deco style diamond engagement ring. 14k white gold, EGL certified center stone with 8
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Jabel .40 Carats Diamond Yellow White Open Dome Ring
By Jabel
Located in Stamford, CT
1960's Jabel Diamond domed 18k yellow and white gold ring. circa 1960's. 15 round full cut
Category

Mid-20th Century Dome Rings

Materials

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

.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

.40 Carat Two Row Diamond Platinum Eternity Wedding Band Ring
Located in Stamford, CT
Diamond wedding band ring. 58 full cut round diamonds set in a platinum cross over wedding band
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

Cober 6.2 Carat Indigolite Tourmaline and 40 Blue Diamonds & 34 Diamonds Ring
By Vincent Cober
Located in OSS, NH
6,2 Carat Indigolite Tourmaline and 40 Blue Diamonds & 34 Diamonds Ring by Cober Jewellery Do you
Category

2010s Dutch Contemporary Fashion Rings

Materials

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

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

White Diamond, Diamond, Aquamarine, Yellow Gold, 14k Gold, Gold

.40 Carat Total Weight Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.8 grams ‌ Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.40 Carat Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 4.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.8 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.40 Carat Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 5.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.16 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.40 Carat Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 8.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 4.0 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Dior Diorella 40 Carat Amethyst Diamond Sapphire Ring
By Christian Dior
Located in Feasterville, PA
brilliant cut diamonds and 1.63ct of garnet in 18k yellow gold. The ring retails for 37,000 +Tax USD and
Category

2010s Cocktail Rings

Materials

Amethyst, Diamond, Garnet, 18k Gold, Yellow Gold

Dior Diorella 40 Carat Amethyst Diamond Sapphire Ring
By Christian Dior
Located in Feasterville, PA
brilliant cut diamonds and 1.63ct of garnet in 18k yellow gold. The ring retails for 37,000 +Tax USD and
Category

2010s Cocktail Rings

Materials

Amethyst, Diamond, Garnet, 18k Gold, Yellow Gold

.40 Carat Diamond and .65 Carat Total Sapphire Ring
Located in Atlanta, GA
Ring Size: 4.25 Metal Type: 14K Yellow Gold [Hallmarked, and Tested] Weight: 2.6 grams Diamond
Category

Antique Early 1900s Unknown Edwardian Cocktail Rings

.40 Carat Diamond Yellow Gold Greek Key Design Unisex Ring
Located in Stamford, CT
Rectangular top signet style Greek key design diamond unisex, 18k yellow gold ring. 24 round
Category

21st Century and Contemporary Signet Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

GIA Certified .40 Carat Chrysoberyl Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Chrysoberyl and diamond engagement ring. GIA certified .40ct oval green chrysoberyl center stone
Category

21st Century and Contemporary More Rings

Materials

Diamond, Chrysoberyl, Yellow Gold, 14k Gold, Gold

Tiffany & Co. Platinum .40 Carat Diamond Engagement Ring 4.5
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum .40ct Diamond Engagement Ring 4.5 Metal: Platinum Size: 4.5 Diamond: round
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

.40 Carat Marquise Sapphire Diamond Halo White Gold Engagement Ring
Located in Stamford, CT
Diamond and sapphire engagement ring. Marquise center sapphire with a halo of round cut diamonds in
Category

Late 20th Century Engagement Rings

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

EGL Certified .40 Carat Semi Bezel Channel Set Diamond Engagement Ring
Located in Stamford, CT
Designer FD diamond engagement ring. EGL certified round center semi bezel diamond with 6 full cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

.40 Carat Total Weight Rose Cut Diamond Cocktail Ring
Located in Atlanta, GA
Item Details: Ring Size: 7 Metal Type: 14K Yellow Gold [Hallmarked, and Tested] Weight: 1.9 grams
Category

Antique 1890s Unknown Victorian Cocktail Rings

Materials

Diamond

Two-Tone Diamond Ribbon Ring 2.64 Carat 18 Karat Yellow and White Gold
By Harbor Diamonds
Located in New York, NY
18K White gold ring featuring 40 round brilliants weighing 2.64 carats with a decorative 18k yellow
Category

1990s American Contemporary Cocktail Rings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

EGL Certified .40 Carat Diamond Old European Cut Platinum Engagement Ring
Located in Stamford, CT
1920's Art Deco Diamond Old European Mixed Cut Platinum Engagement Ring set in platinum. EGL
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

.40 Carat Diamond Platinum and Yellow Gold Cocktail Ring
Located in Atlanta, GA
Ring Size: 6.25 Metal Type: Platinum & 14K Yellow Gold [Hallmarked, and Tested] Weight: 2.6 grams
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Yellow Gold, Platinum

EGL Certified .40 Carat Diamond Gold Filigree Art Deco Engagement Ring
Located in Stamford, CT
1930-1940 filigree transitional cut diamond engagement ring. Raised hand carved and filigree in its
Category

Vintage 1930s Bridal Rings

Materials

Diamond, Gold, 18k Gold, White Gold

.40 Carat Vintage Victorian Natural Diamond Ring 18 Karat Raised Crest
Located in New York, NY
Victorian Vintage Solitaire .40ct. Natural round diamond ring Si-1 clarity H-color Very good
Category

20th Century American Victorian Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

Estate Art Deco Platinum .40 Carat Baguette European Single Cut Diamond Ring
Located in Stamford, CT
Vintage All original Retro Art Deco Platinum ring. Pierced top with round and baguette diamonds
Category

Mid-20th Century More Rings

Materials

Diamond, Platinum

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

Christian Dior 40 Carat Blue Chalcedony Diamond Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
A magnificent cocktail ring by Christian Dior boasting a 40ct blue chalcedony wrapped by a white
Category

2010s Cocktail Rings

Materials

Chalcedony, Diamond, Gold

Christian Dior 40 Carat Blue Chalcedony Diamond Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
A magnificent cocktail ring by Christian Dior boasting a 40ct blue chalcedony wrapped by a white
Category

2010s Cocktail Rings

Materials

Chalcedony, Diamond, Gold

Christian Dior 40 Carat Blue Chalcedony Diamond Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
A magnificent cocktail ring by Christian Dior boasting a 40ct blue chalcedony wrapped by a white
Category

2010s Cocktail Rings

Materials

Chalcedony, Diamond, Gold

Christian Dior 40 Carat Moonstone Diamond Yellow Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
with a round brilliant cut diamond in 18k yellow gold. The ring measures a size 5 1/2 and can be
Category

2010s Cocktail Rings

Materials

Diamond, Moonstone, Yellow Gold

Christian Dior 40 Carat Moonstone Diamond Yellow Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
with a round brilliant cut diamond in 18k yellow gold. The ring measures a size 49 european and can be
Category

2010s Cocktail Rings

Materials

Diamond, Moonstone, Yellow Gold

Christian Dior 40 Carat Moonstone Diamond Yellow Gold Cocktail Ring
By Christian Dior
Located in Feasterville, PA
with a round brilliant cut diamond in 18k yellow gold. The ring measures a size 47 european and can be
Category

2010s Cocktail Rings

Materials

Diamond, Moonstone, Yellow Gold

0.20 Carat Diamond Ring G/SI1 14k White Gold, 40 Brilliant Cut Pave Diamonds
Located in Darmstadt, DE
0.20 Carat Diamond Ring G/SI1 14k White Gold, 40 Brilliant Cut Pave Diamonds High Gloss Finish
Category

2010s German Modern Cocktail Rings

Materials

Diamond, White Gold, 14k Gold, Gold

Tiffany & Co. Crossover Diamond Engagement Ring .40 Carat F/VVS2
By Tiffany & Co.
Located in London, GB
A lovely 18k yellow gold Tiffany & Co. diamond engagement ring. The ring comprises of a round
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

.40 Carat Victorian Diamond 18 Karat Yellow Gold Engagement Ring
Located in Atlanta, GA
Ring Size: 6.5 Metal Type: 18K Yellow Gold, Platinum prongs [Hallmarked, and Tested] Weight: 3.0
Category

Antique Early 1900s Unknown Victorian Engagement Rings

Materials

Diamond, Yellow Gold

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 3.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 5.5 grams Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.40 Carat Edwardian Diamond 18 Karat Yellow Gold Engagement Ring
Located in Atlanta, GA
Ring Size: 5 Metal Type: 18karat Yellow Gold, Platinum Prongs [Hallmarked, and Tested] Weight: 1.9
Category

Antique Early 1900s Unknown Edwardian Engagement Rings

Materials

Diamond, Yellow Gold

1910 Edwardian Platinum .40 Carat Old European Brilliant Diamond Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 5.25 Metal Type: Platinum Weight: 2.2 grams Center Diamond Details
Category

Vintage 1910s Unknown Edwardian Engagement Rings

Materials

White Diamond, Platinum

.40 Carat Total Weight Art Deco Diamond Platinum Onyx Engagement Ring
Located in Atlanta, GA
Ring Size: 7.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 6.5 grams Diamond Details
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Diamond, Onyx, Platinum

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

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40 Carat Diamond Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 40 carat diamond ring for your needs in our varied inventory. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. Our collection of these items for sale includes 386 vintage editions and 553 modern creations to choose from as well. Making the right choice when shopping for a 40 carat diamond ring may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. 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. Creating a 40 carat diamond ring has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Luigi Ferrara and Mark Broumand are consistently popular. 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 emerald cut alternatives. Most of our 40 carat diamond ring for sale are for women, but there are 277 pieces available to browse for men.

How Much is a 40 Carat Diamond Ring?

The price for a 40 carat diamond ring starts at $235 and tops out at $2,500,000 with these rings, on average, selling for $3,582.

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 40 Carat Diamond Ring
  • 1stDibs ExpertNovember 2, 2023
    There is no rule for how many carats a diamond wedding ring should be. You're free to choose a ring with a carat weight that appeals to you and fits your budget. The average carat weight for diamond wedding rings is 1 to 1.9 carats. Shop an assortment of diamond wedding rings on 1stDibs.
  • 1stDibs ExpertFebruary 1, 2024
    Elizabeth Taylor's famous diamond ring was 33.19 carats. Although many people believe the Krupp diamond ring was an engagement gift, Richard Burton actually bought the gorgeous Asscher-cut ring to mark their five-year anniversary. For their engagement, Burton presented Taylor with an 18.61-carat emerald and diamond pendant made by Bulgari. The pendant detached from its necklace and could double as a brooch. Explore a large selection of diamond rings on 1stDibs.