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Round Carat Antique Diamond Engagement Ring

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GIA Certified .85 Carat Round Diamond Platinum Engagement Ring
Located in Stamford, CT
Original 1930's Art Deco diamond engagement ring. This ring begins with a dazzling .85ct round
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

GIA Certified 2.52 Carats Brilliant Round Diamond Antique Engagement Ring
Located in New York, NY
Antique engagement ring featuring a brilliant round center stone weighing 2.52 carats that GIA
Category

Early 20th Century Unknown Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified 1.11 Carat Round Diamond Platinum Engagement Ring
Located in Stamford, CT
Original Platinum step design Art Deco diamond engagement ring. Circa 1920's. EGL certified center
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified .61 Carat Round Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Classic 1940's square top diamond engagement ring. EGL certified center stone, is a brilliant round
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified .90 Carat Round Diamond Palladium Three-Stone Engagement Ring
Located in Stamford, CT
1940's vintage diamond engagement ring. EGL certified round brilliant cut center diamond. In a
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Palladium

2.53 Carat Round Cut Baguette Diamond Three-Stone Platinum Engagement Ring
Located in Stamford, CT
1940s round brilliant cut light yellow center diamond. EGL certified, in a platinum three-stone
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

4.89 Carat Diamond Solitaire Engagement Ring in Platinum
Located in Jesmond, Newcastle Upon Tyne
An exceptional and impressive antique 4.89 carat diamond solitaire ring, displayed in a
Category

Early 1900s Unknown Contemporary Round Carat Antique Diamond Engagement Ring

Materials

Diamond, 14k Gold, Platinum

1920s-1930s Platinum Engagement Ring with 1.74 Carat Round Diamond
Located in New York, NY
The beatiful ring is finely crafted in platinum with platinum with center diamond weighing
Category

1920s American Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Martin Flyer GIA 1.01 Carat Round Diamond Platinum Three-Stone Engagement Ring
By Martin Flyer
Located in Stamford, CT
Martin Flyer 1940's diamond engagement ring. GIA certified round brilliant cut center stone with 4
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Original 1920's Art Deco Cartier 5.15 Carat Round Diamond Engagement Ring
By Cartier
Located in Miami, FL
*** Designer: Cartier Era: 1920's Style: Art Deco Engagement Ring Metal: Platinum​​​​​​​ Metal Purity
Category

1920s Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1920s-1930s Center Round Diamond Engagement Ring
Located in New York, NY
The beautiful engagement ring is finely crafted in platinum with round beautiful diamond weighing
Category

1920s American Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

.30 Carat Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
1940's designed sapphire diamond ring. 1 round .30cts round sapphire setting platinum with 18 sing
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

Gia Certified .78 Carat Round Yellow Diamond White Gold Art Deco Engagement Ring
Located in Stamford, CT
1920's Art Deco round diamond engagement ring. GIA certified .78 round brilliant cut light yellow
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

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

EGL Certified 1.10 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
1940's diamond engagement ring. Round brilliant cut center stone set in its original filigree
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified .82 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
Diamond platinum engagement ring, with a transitional round stone set in the center of filigree
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

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 Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified .56 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
Vintage 1940s filigree diamond engagement ring set with a bright sparkly ideal cut original center
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

GIA Certified .87 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
Vintage Old European cut .87 natural faint gray diamond filigree engagement ring. circa 1910. GIA
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.52 Carat Diamond Three-Stone Platinum Engagement Ring
Located in Stamford, CT
1940's late Art Deco transitional Ideal cut diamond platinum engagement Ring. EGL certified center
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

3.61 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum ring from the Edwardian era, centers a sparkling GIA certified round
Category

Early 20th Century Edwardian Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

EGL Certified 1.56 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
1930's diamond platinum ring. EGL certified transitional cut center stone with six round brilliant
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.92 carat GIA cert Diamond Platinum Engagement Ring
Located in New York, NY
stone are sparkling round cut diamonds that weighs approximately 0.40ct. graded G color with VS clarity
Category

Early 20th Century Edwardian Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

GIA Certified 1.60 Carats Round Cut Ruby with Diamond Antique Engagement Ring
Located in New York, NY
1.60 carats, set in a bezel. Flanked on each side by a round diamonds weighing 1.00 carats total. Made
Category

Early 20th Century Unknown Art Nouveau Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Ruby, Platinum

J. Birnbach Art Deco 1.22 carat Round Brilliant Platinum Engagement Ring
Located in New York, NY
1.22 carat round diamond M color and SI1 clarity, the diamond is framed by chevron prongs that give it
Category

Early 20th Century American Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.69 Carat Diamond Three-Stone Gold Engagement Ring
Located in Stamford, CT
1930's Three-stone diamond engagement ring. EGL certified round cut center stone, set in 14k white
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Gold, 14k Gold, White Gold

.52 Carat Diamond Art Deco Filigree Platinum Engagement Ring
Located in Stamford, CT
Vintage 1940's Art Deco filigree Diamond engagement ring with a transitional cut EGL certified
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Antique 2.30 Carat Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring from the Edwardian era, centers a sparkling GIA certified
Category

Early 20th Century Edwardian Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Edwardian GIA Cert 2.20 Carat Diamond Platinum Engagement Ring
Located in New York, NY
This breathtaking platinum engagement ring from the Edwardian era, centers a GIA certified round
Category

Early 20th Century Edwardian Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.02 Carat Diamond Sapphire Platinum Engagement Ring
Located in New York, NY
are blue sapphires and high quality round cut diamond accents. The ring is size 7, and can be resized
Category

Early 20th Century Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

Edwardian 0.51 Carat Diamond Gold Engagement Ring
Located in New York, NY
sparkling round cut diamond that weighs 0.51ct. graded G with VS1 clarity. The ring is stamped 14K and
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, 14k Gold, White Gold

EGL Certified .55 Carat Diamond Edwardian Platinum Engagement Ring
Located in Stamford, CT
1935 Edwardian design diamond engagement ring. EGL certified round brilliant cut center diamond, in
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Antique GIA Cert 1 Carat Diamond Platinum Engagement Ring
Located in New York, NY
accentuated by dazzling round cut diamond accents. The ring is stamped PLAT and weighs 4.6 grams. It is
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

GIA 1.20 Carat Montana Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Light purple gray natural sapphire and diamond engagement ring. GIA certified round center sapphire
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

Vintage 1.11 Carat Diamond Engagement Ring
Located in New York, NY
This is a stunning 14k yellow and white gold engagement ring from the 1920s. The ring is centered
Category

1920s Round Carat Antique Diamond Engagement Ring

Materials

Diamond, 14k Gold

10.35 Carat Rectangle Aquamarine Ruby Diamond Platinum Engagement Ring
Located in Stamford, CT
Magnificat 1930's Aqua, ruby and diamond engagement ring. At the center of this Art Deco design is
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Aquamarine, Diamond, Ruby, Platinum

GIA Certified 1.27 Carat Diamond Sapphire Platinum Engagement Ring
Located in Stamford, CT
1940's Diamond platinum engagement ring. GIA certified round ideal cut center diamond in a platinum
Category

Early 20th Century Unknown Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

Art Deco Half Carat Diamond Platinum Engagement Ring
Located in Los Angeles, CA
Art Deco diamond and platinum engagement ring circa 1925. * ABOUT THIS ITEM: #R-DJ812D. Scroll
Category

1920s Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.77 Carat Transitional Cut Diamond Platinum Engagement Ring
Located in Stamford, CT
1940's transitional cut round diamond engagement ring. EGL certified round transitional cut diamond
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

0.85 Carat Diamond Platinum Engagement Ring
Located in New York, NY
This magnificent platinum ring from the Art Deco era, centers a sparkling old European cut diamond
Category

Early 20th Century Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

.49 Carat Diamond Sapphire Art Deco Platinum Engagement Ring
Located in Stamford, CT
.49ct Diamond Sapphire Platinum Art Deco engagement ring. Diamond Platinum Art Deco design ring
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

1.88 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring is centered with a sparkling GIA certified round brilliant
Category

Early 20th Century Edwardian Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.08 Carat Diamond Platinum Engagement Ring
Located in New York, NY
round brilliant cut diamond that weighs 1.08ct. graded J color with VS1 clarity. The center diamond is
Category

Early 20th Century Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

1920s-1930s Filigree with 1.80 Round Diamond Engagement Ring
Located in New York, NY
The beautiful engagement is finely crafted in platinum with center diamond weighing approximately
Category

1920s American Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.18 Carat Diamond and Platinum Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
platinum setting; part of our diamond jewelry collections. This fine diamond engagement ring ring has been
Category

Early 1900s Contemporary Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

Belais .12 Carat Diamond Art Deco Gold Engagement Ring
Located in Stamford, CT
Belais diamond engagement ring. 18k white gold original Art Deco circa 1920s with highly detailed
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Gold, 14k Gold, White Gold

1.17 Carat Diamond Platinum Art Deco Engagement Ring
Located in Stamford, CT
1930's Diamond engagement ring. Round transitional cut center diamond with 12 old European accent
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

GIA Certified 1.25 Carat Light Brown Diamond Platinum Engagement Ring
Located in Stamford, CT
1940's diamond engagement ring. GIA certified natural light brown center diamond with two baguette
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Brown Diamond, Platinum

1.02 Carat GIA Certified Diamond platinum Engagement Ring
Located in New York, NY
. Accentuating the center stone are dazzling round cut diamond accents. The ring is currently size 6 1/2, and can
Category

Early 20th Century Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.04 Carat Orange Brown Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Orange brown diamond engagement ring. Fancy dark orange/ brown transitional cut center diamond with
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Brown Diamond, Diamond, Platinum

1.89 Carat GIA Certified Onyx Diamond Engagement Ring
Located in New York, NY
This amazing platinum ring centers a sparkling GIA certified old European cut diamond that weighs
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Onyx, Platinum

.45 Carat Diamond Old Euro Filigree Gold Engagement Ring
Located in Stamford, CT
setting. 1 round old euro diamond 5.0 x 4.86 x 2.78mm G-H SI approximate .45 carats EGL Certificate # US
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, White Gold, Gold, 18k Gold

French 1920s Diamonds Platinum Round Shape Engagement Ring
Located in Poitiers, FR
. Our opinion : feminine and so easy to wear this antique ring would be a diamond engagement ring of
Category

1920s French Art Deco Round Carat Antique Diamond Engagement Ring

Materials

Diamond, White Diamond, Platinum

GIA 1.09 Carat Sapphire Diamond Platinum Three-stone Engagement Ring
Located in Stamford, CT
baguette side diamonds. The engagement ring is original circa 1940-1950. 1 round natural Montana gray
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Sapphire, Platinum

EGL Certified .26 Carat Diamond Transitional Cut Platinum Engagement Ring
Located in Stamford, CT
1940's late Art Deco transitional diamond engagement ring with six side diamonds in it's original
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

2.03 Carat Old Mine Brilliant Cut Diamond Platinum Engagement Ring
Located in New York, NY
This elegant platinum ring centers a sparkling EGL certified old mine brilliant cut diamond that
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

.81 Carat Diamond Cushion Cut Art Deco Platinum Engagement Ring
Located in Stamford, CT
Ladies handmade diamond art deco engagement ring. Platinum setting. circa 1910-1920 set with 10
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

1.38 Carat Sapphire Diamond Three-Stone Gold Engagement Ring
Located in Stamford, CT
Sapphire and diamond engagement ring. AGL certified round center sapphire in a 14k white gold three
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

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

GIA Certified 1.55 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
1900 platinum pierced, pave set diamond engagement ring. GIA certified center stone with 44 single
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

4.25 Carat Peridot Diamond Platinum Filigree Engagement Ring
Located in Stamford, CT
Peridot and diamond ring. 4.25ct European cut peridot center stone in a platinum setting with 14
Category

Early 20th Century Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Peridot, Platinum

GIA Certified 4.01 Carat Diamond Platinum Split Shank Engagement Ring
Located in Stamford, CT
Ideal cut diamond engagement ring. in its original handmade, hand engraved platinum setting. Bead
Category

Early 20th Century Unknown Round Carat Antique Diamond Engagement Ring

Materials

Diamond, Platinum

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Round Carat Antique Diamond Engagement Ring For Sale on 1stDibs

You are likely to find exactly the round carat antique diamond engagement ring you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Yellow Gold — can elevate any look. Find an antique version now, or shop for 230 vintage or 27 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a round carat antique diamond engagement ring from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. Creating a round carat antique diamond engagement ring has been a part of the legacy of many jewelers, but those produced by De Maria fine&antique jewelry, Five Star Jewelry and Hana Or 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 alternatives. There aren’t many items for men if you’re seeking a round carat antique diamond engagement ring, as most of the options available are for women and unisex.

How Much is a Round Carat Antique Diamond Engagement Ring?

The price for a round carat antique diamond engagement ring starts at $461 and tops out at $52,000 with these rings, on average, selling for $4,959.

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.