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30 Carat Aquamarine and Diamond Ring in 14 Karat Yellow Gold
Located in Dallas, TX
What a statement! This ring features a stunning 30 carat emerald cut aquamarine with diamond
Category

Vintage 1940s Unknown Retro Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, Yellow Gold

Diamond and Sapphire Ring, 14 Karat Rose Gold Milgrain Round Cut .30 Carat
Located in Greensboro, NC
Information: Natural Diamond - Clarity: VS2 Color: I Carat: 0.18ct Genuine Sapphires - Treatment: Heating
Category

21st Century and Contemporary Unknown Band Rings

Materials

Diamond, Blue Sapphire, 14k Gold, Rose Gold

.30 Carat Round Brilliant Diamond Ring, 14 Karat Gold Milgrain Wedding Band
Located in Greensboro, NC
, this NEW 14k white gold ring showcases radiant diamonds outlined by sweet milgrain borders. This
Category

21st Century and Contemporary Unknown Wedding Rings

Materials

Diamond, 14k Gold, White Gold

30 Carat Aquamarine Rose Cut Diamond Ruby Ring 18 Karat Gold Antique Cocktail
Located in New York, NY
We are so delighted to have this extraordinary 30 Carat antique natural Aquamarine Rose Cut Diamond
Category

20th Century Georgian Cocktail Rings

Materials

Aquamarine, Diamond, Ruby, Gold, Yellow Gold, 18k Gold, Silver

.30 Carat Total Weight Ruby Yellow Gold Engagement Ring
Located in Hicksville, NY
: Natural Ruby Shape: Antique Cushion Carat Weight: .30 carat, total weight. Color: Reddish Pink Side Stone
Category

Antique 1880s Unknown Victorian Engagement Rings

Materials

White Diamond, Ruby, 9k Gold, Yellow Gold

Tiffany Co .30 Carat Diamonds by the Yard Band Ring, 950 Platinum Elsa Peretti
By Elsa Peretti for Tiffany Co.
Located in Greensboro, NC
, this Diamonds by the Yard band ring is created in 950 platinum and hosts five sparkling white diamonds
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, Platinum

Retro Men s Gold Ring Natural Opal Gem Stone and .30 Carat Diamond, circa 1970
Located in Los Angeles, CA
Carat (H SI) Natural Diamonds, Circa 1970. Weight of the ring is 11.57 grams. Shipped with USPS First
Category

Vintage 1970s Unknown Retro Cocktail Rings

Materials

Diamond, Opal, Gold, 14k Gold

Huge Ruby Cabochon 30 carats 14K
Located in North Hollywood, CA
Diamonds on each side of shank to total 12 @ 0.03 to total 1.35 carats. Ring can be sized currently it is
Category

Vintage 1980s American Artisan Dome Rings

Materials

Diamond, Pearl, Ruby, 14k Gold

Tiffany Co. Diamond 18 Karat Rose Gold Band, Rose Gold Tiffany Co. Ring, .30
By Tiffany Co.
Located in Austin, TX
is stunning with bright white round brilliant diamonds. This ring has .30 carats total diamond weight
Category

21st Century and Contemporary American Contemporary Wedding Rings

Materials

Diamond, White Diamond, 18k Gold, Rose Gold

Large 14 Karat White Gold Ring Set with Huge Aquamarine circa 30 Carat
Located in Berlin, DE
about 17mm x 24mm x 11mm (about 30 carats). Additionally set with 8 diamonds in top quality and color
Category

20th Century Modern Fashion Rings

Materials

White Diamond, Aquamarine, 14k Gold, White Gold

.30 Carat Total Weight Ruby Platinum Wedding Band
Located in Hicksville, NY
Ring Size: 5.5 Metal Type: Platinum Weight: 3.7 grams Center Diamond Details Shape: French Cut
Category

Vintage 1920s Unknown Art Deco Band Rings

Materials

White Diamond, Ruby, Platinum

Art Deco Orange Blossom 14 Karat White Gold .30 Carat Diamond Wedding Band
Located in Great Neck, NY
Beautiful Antique Art Deco Orange Blossom 14K White Gold .30 ct Old European Cut Diamond Wedding
Category

Vintage 1920s American Art Deco Band Rings

Materials

Diamond, White Gold

.30 Carat Total Weight Ruby Platinum Wedding Band for Shanth
Located in Hicksville, NY
Ring Size: 5.5 Metal Type: Platinum Weight: 3.7 grams Center Diamond Details Shape: French Cut
Category

Vintage 1920s Unknown Art Deco Band Rings

Materials

White Diamond, Ruby, Platinum

Brilliant Earth Diamond 14 Karat Rose Gold Engagement Ring w GIA Cert Box Papers
Located in Mount Kisco, NY
from Botswana and is a round brilliant GIA certified .30 carat round D/VS1 Diamond. The ring setting
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

Roberto Coin Natural .30 Carat Diamond Ring Yellow Gold 18 Karat
By Roberto Coin
Located in Daytona Beach, FL
Roberto Coin Natural .30 TCW Diamond Ring Yellow Gold 18K Era: Modern Designer: Roberto Coin
Category

21st Century and Contemporary Italian Modern More Rings

Materials

Diamond, 18k Gold

30 Carat Kunzite Diamond Gold Ring
Located in Agoura Hills, CA
purplish pink natural kunzite, surrounded by 5.0 carats of diamonds. Color: F-G, Clarity: VS The front
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Kunzite, 18k Gold

30 Carat Star Sapphire Diamond platinum ballerina Ring
Located in Greenwich, CT
approximately 30 carats, surrounded by a row of circular-cut diamonds to the tapered baguette-cut diamond fringe
Category

Late 20th Century Cluster Rings

Materials

Diamond, Star Sapphire, Platinum

Henry Dunay Platinum .30 Carat Pave Diamond Ring
By Henry Dunay
Located in Dallas, TX
round brilliant cut diamonds are pave set (.30 ctw D color and IF internal clarity). This ring currently
Category

Late 20th Century American Modern Band Rings

Materials

Diamond, White Diamond, Platinum

Art Deco .30 Carat Diamond Gold Engagement Ring
Located in Tampa, FL
This is a gorgeous and petite antique engagement ring featuring a .30ct. apx. European cut center
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Art Deco .30 Carat Diamond Sapphire Platinum Engagement Ring
Located in Tampa, FL
This vintage engagement ring is a rare find! It is crafted in platinum and features a .30ct
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Blue Sapphire, Diamond, Platinum

30 Carat Citrine Ring Signed Tiffany Co.
By Tiffany Co.
Located in Chestnut Hill, MA
Platinum ring featuring 1 emerald cut citrine weighing approximately 30 carats surrounded by full
Category

20th Century Retro Cocktail Rings

Materials

Citrine, Diamond, White Diamond, Platinum

Ring 3 gold 18 carats decorated with 30 brilliant round diamonds of 0.72 carats
Located in Monte-Carlo, MC
Ring 3 gold (yellow, pink and white) 18 carats decorated with 30 brilliant round cut diamonds of
Category

21st Century and Contemporary Bridal Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

1940 s .30 Carat Early Old European Cut Diamond Engagement ring set in Platinum
Located in Jersey City, NJ
finger. Diamond: Est. 0.30 carat early Old European cut diamond and six small Single Cuts at shoulders
Category

Vintage 1950s Unknown Retro Engagement Rings

Materials

Diamond, Platinum

Edwardian 1.77 Carat Diamond Platinum Ring
Located in Carmel, CA
A stunning Edwardian Era ring with a bezel set Old European Cut center diamond weighing 1.77 carats
Category

Antique Early 1900s Edwardian Engagement Rings

Materials

Diamond, Platinum

Pasquale Bruni 18 Karat White Gold 2, 30 Carat Pink Sapphires and Diamond
By Pasquale Bruni
Located in Bari, IT
Pasquale Bruni Band ring in white gold, pink sapphires 2.30 ct. and diamonds 1.17 ct. This special
Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

Diamond, Pink Sapphire, White Gold

Antique Art Deco Diamond 3-Stone Platinum .30 Carat Engagement Ring
Located in Crownsville, MD
Gorgeous delicate antique Art Deco era circa 1940s platinum engagement ring with a sparkling .30
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Midcentury 1950s Platinum 30 Carat VVS Aquamarine Diamond Cocktail Ring
Located in Shaker Heights, OH
This amazing impressive ring is set in solid platinum, tested, and features a huge central 25 carat
Category

Vintage 1950s American Retro Cocktail Rings

Materials

Aquamarine, White Diamond, Platinum

14 Karat Gold Diamond 30 Carat Blue Topaz Halo Checkerboard Cut Cocktail Ring
Located in Lauderdale by the Sea, FL
ladies Blue Topaz and diamond halo ring, crafted in 14k white gold, the center contains a cushion shape
Category

2010s American Modern Cocktail Rings

Materials

14k Gold

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30 Carat Diamond Ring For Sale on 1stDibs

You are likely to find exactly the 30 carat diamond ring you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 30 carat diamond ring may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. 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 30 carat diamond ring has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Luigi Ferrara and Tiffany Co. 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. There aren’t many items for men if you’re seeking a 30 carat diamond ring, as most of the options available are for women and unisex.

How Much is a 30 Carat Diamond Ring?

Prices for a 30 carat diamond ring can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $253 and can go as high as $1,875,000, while this accessory, on average, fetches $3,594.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And 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

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

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 30 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.