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30 Carat Round Diamond Ring

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2.46 Carat Diamond Tri-Color Stackable Rings
By Harbor Diamonds
Located in New York, NY
Diamond 'bubble' stackable rings featuring 30 round brilliants weighing 2.42 carats in 14k rose
Category

2010s American Contemporary Band Rings

Materials

Diamond, Mixed Metal

.30 Carat Diamond Swirl Platinum Engagement Ring
Located in Stamford, CT
Diamond Swirl design Platinum engagement ring. .30ct full cut center stone with 19 Ideal full cut
Category

21st Century and Contemporary Engagement Rings

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 Engagement Rings

Materials

Diamond, Sapphire, Platinum

Tiffany & Co .30 Carat Diamond Platinum Flower Ring
By Tiffany & Co.
Located in Stamford, CT
Tiffany & Co Enchanted garden diamond flower platinum ring. 26 round brilliant cut diamonds set in
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Platinum

.30 Carat Brown Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Bezel set natural brown and white diamond engagement ring. 1 brown bezel set diamond with two round
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Brown Diamond, Gold, 14k Gold, Yellow Gold

Modern Platinum Band 3 Carat Natural Baguette & Round F VS Diamond Cocktail Ring
By Radiam Diamond Company
Located in Los Angeles, CA
Diamonds weighing 1.75 carats and measuring 3.5x2mm. In addition, there are 30 Natural Round Brilliant
Category

2010s American Modern Band Rings

Materials

Diamond, Platinum

Tiffany & Co. Streamerica .30 Carat Round Diamond Band Ring 18 Karat White Gold
By Tiffany & Co.
Located in Scottsdale, AZ
total of 20 diamonds. The stones are F-G in color, VS in clarity, and total approximately .30 carats
Category

Early 2000s Contemporary Band Rings

Materials

Diamond, 18k Gold, White Gold

Platinum Natural Diamond .30 Carat 6.5MM Band Ring
Located in Baltimore, MD
: Approx. .30 CTW natural round diamonds G VS Width: 6.5mm Size: 6 (US)
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Platinum

Emerald Diamonds Cluster Ring 14 Karat .30 Carat
Located in New York, NY
carat natural round diamonds 14 karat yellow gold 2 grams Depth of ring 6 mm Size 6 and 1/4 we may
Category

2010s American Cluster Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

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 Engagement Rings

Materials

Diamond, Platinum

1.85 Carat Round Amethyst Diamond Platinum Swirl Cocktail Ring
Located in Stamford, CT
ring. 1 round purple amethyst, approx. 1.85cts 34 single cut diamonds, G-H SI approx. .85cts Size 7
Category

Mid-20th Century Cocktail Rings

Materials

Amethyst, Diamond, Platinum

Peter Suchy .30 Carat Diamond Rose Gold Eternity Band Ring
By Peter Suchy
Located in Stamford, CT
hand set with 18 full cut bead set diamonds in a round band. Can be made in any finger size. 18 round
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

5.05 Carat Round Blue Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Round sapphire and diamond handmade engagement ring. Rich blue with a hint of purple round sapphire
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

Natural Diamond Ring 0.85 carats 18KT White Gold 5 Round Solitaire Diamond Ring
Located in Antwerpen, BE
Embark on a journey of enhanced splendor with this Italian Handmade 5 Round Cut Engagement Ring
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

.42 Carat Round Brilliant Cut Diamond Platinum Eternity Band Ring
Located in Stamford, CT
Crafted to perfection, this timeless diamond wedding band showcases a dazzling row of 14 round
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

1.25 Carat Round Diamond Yellow Gold Dome Cluster Ring
Located in Stamford, CT
Diamond dome cluster ring. The ring is set with 32 round brilliant cut diamonds in a cluster design
Category

Late 20th Century Cluster Rings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

2.42 Carat Round Diamond White Gold Wedding Band Ring
Located in Stamford, CT
11 round brilliant cut white diamonds totaling 2.42cts. The ring is a size 8.5 and can be sized up or
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Peter Suchy 3.20 Carat Round Diamond Platinum Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
Diamond wedding band ring. This substantial wedding band was inspired by styling of the Art Deco
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Natural Yellow Round Diamond .30 Carat TW Yellow Gold Wedding Band
Located in New York, NY
round yellow diamond melee. This band is guaranteed to impress and enhance your personal collection
Category

21st Century and Contemporary American Contemporary Band Rings

Materials

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

4.66 Carat Round Aquamarine Diamond Art Deco Platinum Engagement Ring
Located in Stamford, CT
1920's 4.66ct round Aquamarine and Diamond Art Deco platinum engagement ring, a true embodiment of
Category

Early 20th Century Fashion Rings

Materials

Aquamarine, Diamond, Platinum

Art Deco .54 Carats Round Baguette Diamond Platinum Band Ring
Located in Stamford, CT
1940's Vintage late Art Deco diamond band ring. 12 full cut diamonds in four rows of three
Category

Early 20th Century Band Rings

Materials

Diamond, Platinum

1.11 Carat Round Aquamarine Diamond Platinum Art Deco Engagement Ring
Located in Stamford, CT
Aqua and diamond engagement ring. Beautiful bright round aquamarine center stone measuring 1.11cts
Category

Mid-20th Century Engagement Rings

Materials

Aquamarine, Diamond, Platinum

Vintage 0.70 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Vintage 0.70 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one round brilliant cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

2.30 Carat Brown White Round Diamond Dome Gold Cocktail Ring
Located in Stamford, CT
and shoulders. There is a halo of 30 round full cut white diamonds that sit in a 14k white gold frame
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Diamond, Brown Diamond, Yellow Gold, 14k Gold, Gold, Whit...

6.46 Carat Round Amethyst Diamond Halo White Gold Cocktail Ring
Located in Stamford, CT
Indulge in elegance with our Amethyst and Diamond cocktail ring. This exquisite piece features a
Category

21st Century and Contemporary Cocktail Rings

Materials

Amethyst, Diamond, Gold, 14k Gold, White Gold

Tiffany & Co GIA 1.40 Carat Round Diamond Platinum Solitaire Engagement Ring
By Tiffany & Co.
Located in Stamford, CT
1990's Tiffany & Co diamond solitaire engagement ring. GIA certified round brilliant cut center
Category

Late 20th Century Engagement Rings

Materials

Diamond, Platinum

GIA Certified .30 Carat Emerald Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Emerald and diamond engagement ring. GIA certified oval green emerald center stone in a 14k yellow
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Yellow Gold

Tiffany & Co. 0.41 Carat Round Brilliant Cut Diamond Platinum Ring
By Tiffany & Co.
Located in Beverly Hills, CA
One Tiffany & Co. 0.41 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one round
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

14 Karat Rose Gold .30 Carat Natural Diamond Eternity Band Ring
Located in Baltimore, MD
14 Karat Rose Gold .30 Carat Natural Diamond Eternity Band Ring Metal: 14k rose gold Weight: 1.70
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Rose Gold

Peter Suchy .88 Carat Round Tourmaline Diamond White Gold Engagement Ring
By Peter Suchy
Located in Stamford, CT
Round tourmaline and diamond white gold engagement ring. The center piece of this ring features a
Category

21st Century and Contemporary Engagement Rings

Materials

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

Peter Suchy 1.50 Carat Round Diamond White Gold Domed Cocktail Ring
By Peter Suchy
Located in Stamford, CT
Spectacular diamond dome large cocktail ring. This ring boats 79 round brilliant cut diamonds of
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Gold, 14k Gold, White Gold

GIA Certified .95 Carat Round Emerald Diamond White Gold Engagement Ring
Located in Stamford, CT
Emerald and diamond three-stone engagement ring. GIA certified natural round emerald center stone
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Emerald, Gold, 14k Gold, White Gold

Diamond Flower Cluster Engagement Ring, .30 Carats in 14 Karat Rose Gold Lv
By Five Star Jewelry
Located in Austin, TX
original price of $2,650. The diamonds weigh a total of 0.30 carats. This ring is a size 6 and it can be
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

.43 Carat Round Sapphire Diamond Halo White Gold Wedding Band Ring
Located in Stamford, CT
Crafted with precision and care, this ring boasts a dazzling 9 round sapphires that are encircled
Category

21st Century and Contemporary Wedding Rings

Materials

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

Leaf Fashion Baguette & Round G/SI Diamond Ring 0.74 Carat in 14k Yellow
Located in New York, NY
-catching element to the design. The band is set with a 0.74 CT baguette and round diamonds that sparkle
Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Diamond, 14k Gold, Yellow Gold

.90 Carat Royal Blue Round Sapphire Halo Diamond Gold Engagement Ring
Located in Stamford, CT
Royal blue Sapphire diamond engagement ring. Deep blue round cut .90ct sapphire center stone
Category

1990s Engagement Rings

Materials

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

Hidalgo .30 Carat Diamond White Gold Wedding Band
By Hidalgo
Located in Stamford, CT
Hildago 18k white gold wedding band with .30cts of brilliant cut diamonds 21 round brillinat cut
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, White Gold, Gold, 18k Gold

Mid-Century GIA 4.12 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid-Century GIA 4.12 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one GIA round
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Platinum

Peter Suchy GIA Certified .56 Carat Round Diamond Yellow Gold Engagement Ring
By Peter Suchy
Located in Stamford, CT
Simple and elegant light yellow diamond ring. The ring starts with a .56ct light yellow round
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

30 Carat Cabochon Blue Sapphire and Diamond Double Halo Cocktail Ring
Located in New York, NY
by two rows of round brilliant diamonds. Set in an 18k white gold mounting. Blue sapphire weighs
Category

Vintage 1980s American Cocktail Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Mid-Century French GIA 3.08 Carat Round Brilliant Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid-Century French GIA 3.08 Carat Round Brilliant Diamond Platinum Engagement Ring. Featuring
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Platinum

Mid Century GIA 9.01 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid Century GIA 9.01 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one GIA round
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco GIA 4.18 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Art Deco GIA 4.18 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one GIA round
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

.85 Carat Round Brilliant Diamond Vintage Ring, 14 Karat White Gold Bypass
Located in Greensboro, NC
This ring is a size 6 3/4, but it can be re-sized up 2 sizes for a $30 fee or down 1 size for a $25
Category

20th Century Unknown Engagement Rings

Materials

Diamond, 14k Gold, White Gold

.30-Carat Green Aquamarines and Diamond Infinity Ring 14 Karat
Located in New York, NY
Infinity green aquamarine ring .30 carat natural green aquamarines .05 carat natural diamond 18
Category

2010s American Three-Stone Rings

Materials

Aquamarine, Diamond, 18k Gold, Yellow Gold

Sparkling 0.8 Carat Round Brilliant Diamond Ring in 18K Yellow Gold
Located in רמת גן, IL
Embrace timeless sparkle with this captivating ring, featuring a dazzling 0.8 carat round brilliant
Category

2010s Israeli Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

EGL Certified .65 Carat Round Brilliant Cut Diamond White Gold Engagement Ring
Located in Stamford, CT
Late Art Deco 1940's diamond engagement ring. EGL certified .65ct round brilliant cut center
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold

6.80 Carat 3 Row Round Diamond Invisible Style 14 Karat Gold Eternity Ring
By Sebastian Bernard
Located in Los Angeles, CA
This beautiful Eternity Ring is made in 14K Gold with 30 3.00mm, 30 2.8 mm perfectly matched Round
Category

2010s American Wedding Rings

Materials

Diamond, 14k Gold

.30 Carat Natural Diamonds Adjustable Ring 18 Karat Accordion Shank
Located in New York, NY
.30ct Round diamonds ring Adjustable wear Size 6-7. G- color Vs-2 clarity 5.6mm wide 5.7
Category

2010s American Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

2.51 Carat Round Cut Black and White Diamond Ring, 14 Karat Gold Women's
Located in Greensboro, NC
This ring is a size 5, but it can be re-sized up 2 sizes for a $30 fee. Once a ring is re-sized, we
Category

20th Century Unknown Engagement Rings

Materials

Diamond, Black Diamond, 14k Gold, White Gold

Art Deco Inspired 1.30 Carat Round Brilliant Diamond Sapphire Platinum Ring
Located in Beverly Hills, CA
One Art Deco Inspired 1.30 Carat Round Brilliant Diamond and Sapphire Platinum Filigree Ring
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Mid-Century French GIA 3.00 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid-Century French GIA 3.00 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one GIA
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Brown Diamond, Platinum

10K White Gold Round and Baguette Cut 3/4 Carat Diamond Channel Ring
Located in New York, NY
Diamonds Diamond Count: Total 51 Diamonds Includes 21 Round and 30 Baguette-Cut Diamonds Diamond Color: H-I
Category

21st Century and Contemporary Indian Contemporary Fashion Rings

Materials

Diamond, White Diamond, 10k Gold, White Gold

Gabriel & Co. 14 Karat White Gold .30 Carat Natural Diamond Wedding Band Ring
By Gabriel & Co.
Located in Baltimore, MD
Gabriel & Co. 14 Karat White Gold .30 Carat Natural Diamond Wedding Band Ring Metal: 14k white gold
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, White Gold

1.79 Carat Round Cut Green Tourmaline and Diamond Ring, 14k White Gold Crossover
Located in Greensboro, NC
Tourmaline Color: Green Cut: Round Diameter: 6.9mm Carat: 1.29ct (weighed) Natural Diamonds Clarity: SI1
Category

20th Century Unknown Solitaire Rings

Materials

Diamond, Tourmaline, 14k Gold, White Gold

Art Deco French GIA 2.99 Carat Round Brilliant Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Art Deco French GIA 2.99 Carat Round Brilliant Cut Diamond Platinum Ring. Featuring one GIA
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Three Row Hidden Halo Round Cut Diamond Engagement Ring 1.70 Carat
Located in Los Angeles, CA
This breath taking hidden halo engagement ring consist of 1.70 Ct. Tw. round cut diamonds. This
Category

2010s Engagement Rings

Materials

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

TJD 1.00 Carat Round Diamond 14 Karat White Gold Engagement wedding Ring
By TJD
Located in New York, NY
. Beautifully hand-crafted by our inhouse experts in 14 karat White gold and embellished with 30 round diamonds
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, White Gold

Art Deco Inspired 1.33 Carat Round Brilliant Cut Diamond Emerald Platinum Ring
Located in Beverly Hills, CA
One Art Deco Inspired 1.33 Carat Round Brilliant Cut Diamond Emerald Platinum Ring. Featuring one
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Art Deco Inspired 2.09 Carat Round Brilliant Cut Diamond Emerald Platinum Ring
Located in Beverly Hills, CA
One Art Deco Inspired 2.09 Carat Round Brilliant Cut Diamond and Emerald Platinum Ring. Featuring
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

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30 Carat Round Diamond Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 30 carat round diamond ring for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using gold, 14k gold and white gold. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for a 30 carat round 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. Creating a 30 carat round diamond ring has been a part of the legacy of many jewelers, but those produced by GLEAMIRE, Tiffany & Co. and Fabergé are consistently popular. A round cut version of this piece has appeal, but there are also brilliant cut and oval cut versions for sale. There aren’t many items for men if you’re seeking a 30 carat round diamond ring, as most of the options available are for women and unisex.

How Much is a 30 Carat Round Diamond Ring?

The price for a 30 carat round diamond ring starts at $1 and tops out at $425,000 with these rings, on average, selling for $3,166.

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.