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3 Carat Diamond And Platinum Rings

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.88 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1.04 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.25 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.50 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Item Details: Ring Size: 3.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

3.01 Carat GIA Certified Diamond Platinum Ring
Located in New York, NY
diamonds weighing approximately 0.80ct. The size of the ring is 7 3/4, and can be resized. Inventory
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

1.50 Carats TW Diamond Platinum Engagement Ring
Located in Los Angeles, CA
1.50 Carats TW Diamond Platinum Engagement Ring. This lovely engagement ring is set with one
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Platinum

Vintage 2.73 Carat Diamond and Platinum Cocktail Ring Circa 1960
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 2.73 carat diamond and platinum cocktail ring; part of our
Category

Vintage 1960s Unknown Cocktail Rings

Materials

Diamond, Platinum

Mid Century 1.67 carat platinum 3 stone double band ring
Located in Beverly Hills, CA
This timeless Mid Century ring features a 1.67 carat old European cut diamond at its center
Category

Vintage 1950s Modern Cocktail Rings

Materials

Diamond, Platinum

Certified 2.05 Carat Colombian Emerald in Platinum 3-Stone Engagement Ring
By Eytan Brandes
Located in Sherman Oaks, CA
VS1-2 clarity and F-G color. The total diamond weight is 0.51 carats. The platinum mounting is new
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

1.25 Carat Platinum Three-Emerald Diamond Ring
By Hakimi s Gem
Located in Chicago, IL
This gorgeous ring features three emerald-cut diamonds totaling approximately 1.25 carats, all set
Category

2010s Engagement Rings

Materials

Diamond, Platinum

French 2.65 Carat Diamond and Yellow Gold Platinum Set Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning antique French 2.65 carat diamond and 18 karat yellow gold, platinum set cocktail ring
Category

Vintage 1920s French Cocktail Rings

Materials

Diamond, Platinum, Yellow Gold

Art Deco Sapphire, Diamond and Platinum Ring, 1.30 Carat
Located in London, GB
An Art Deco sapphire and diamond ring, with a central old cut diamond, weighing an estimated 1.30ct
Category

Vintage 1930s Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

1.00 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1940s 1.26 Carat Diamond and White Gold Platinum Set Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
An impressive vintage 1940s 1.26 carat diamond and 18 karat white gold, platinum set cocktail ring
Category

20th Century Unknown Cocktail Rings

Materials

Diamond, 18k Gold, Platinum, White Gold

3 Carat Fancy Yellow Cushion Cut Halo Diamond Ring
By Rare Colors
Located in New York, NY
This stunning yellow diamond engagement ring is the epitome of timeless elegance, designed to
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Antique French 1.22 Carat Diamond and Platinum Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning antique 1920s 1.22 carat diamond (total) and platinum solitaire style engagement ring
Category

Vintage 1920s French Engagement Rings

Materials

Diamond, Platinum

Vintage 2.86 Carat Diamond and Platinum Trilogy Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 2.86 carat diamond and platinum trilogy ring; part of our
Category

Vintage 1970s Three-Stone Rings

Materials

Diamond, Platinum

3.71 Carat Round and Tapered Baguette Diamond Platinum Engagement Ring
Located in New York, NY
Platinum Engagement Ring Style: Engagement Metal: White Platinum Gemstone 1: 0.3 Carat Diamond Number of
Category

20th Century Engagement Rings

Materials

Diamond, White Gold, Platinum

Vintage 2.74 Carat Diamond and Platinum Solitaire Ring Circa 1950
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage platinum set 2.74 carat diamond ring with trillion cut side
Category

Vintage 1950s Unknown Solitaire Rings

Materials

Diamond, Platinum

3 Carat Vivid Red Pigeons Blood Burma Ruby Ring with Diamonds in Platinum Gold
By Gad Co.
Located in Miami, FL
GRS certified 3 carat oval cut Ruby and Diamond halo ring in 18k white gold and platinum. The Ruby
Category

Early 2000s Burmese Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold, Platinum

Vintage 1930s 3-Stone European Cut Diamond Platinum Ring 1.75 Carat
Located in Boston, MA
Vintage 1930s 3 Stone European Cut Diamond Platinum Ring 1.75ct - The center diamond weighs
Category

Vintage 1930s American Art Deco Three-Stone Rings

Materials

Diamond, Platinum

GIA 4.75 Carat I/VS1 Cushion Diamond Platinum 3-Stone Engagement Ring W. 2 Pears
By Sebastian Bernard
Located in Los Angeles, CA
Platinum 3 stone Engagement Ring with 2 Pear Shape diamonds the side with Hidden Halo. Total diamond weight
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

2 Carat Fancy Intense Yellow Diamond 3 Stones Engagement Ring GIA Cert. Platinum
Located in New York, NY
shank. This exquisite ring has a total carat weight of 3.05 carats and is set in polished platinum and
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, Pink Diamond, Rose Gold, Platinum

Princess Cut Diamond Eternity Band (Approx. 3-Carats), Platinum
Located in New York, NY
This exquisite eternity band features an elegant channel setting with approximately 3-carats of
Category

21st Century and Contemporary Unknown Art Deco Band Rings

Materials

Diamond, Platinum

Vintage 1.88 Carat Pink Sapphire Diamond and Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 1.88 carat pink sapphire and 0.56 carat diamond, and platinum cocktail ring
Category

Vintage 1940s Unknown Cocktail Rings

Materials

Diamond, Pink Sapphire, Platinum

Antique 1.65 Carat Diamond and Platinum Solitaire Ring Circa 1920
Located in Jesmond, Newcastle Upon Tyne
A stunning antique 1.65 carat diamond and platinum Art Deco style solitaire ring; part of our
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, Platinum

Platinum and Diamond Engagement Ring
Located in New York, NY
A platinum and diamond ring. Centering an old European cut diamond of 1.75 carats* in a filigree
Category

Vintage 1920s Engagement Rings

Materials

Diamond, Platinum

Platinum 3 row Diamond Eternity Band
Located in New York, NY
diamond band. It is stunning and a classic. Platinum Diamond: 3 ct twd (estimated) Ring Size: 5.25 Total
Category

21st Century and Contemporary More Rings

Materials

Diamond, Platinum

Tiffany Company Circlet Platinum and Diamond Ring
By Tiffany Co.
Located in Chicago, IL
Circa 2020 Tiffany & Co. Circlet collection Ring, .950 Platinum and measuring 5/8 inch across the
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

.50 Carat Diamond Yellow Gold and Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 6.5 Metal Type: 14K Yellow Gold & Plat [Hallmarked, and Tested] Weight: 3 grams
Category

Antique Early 1900s Unknown Edwardian Engagement Rings

Materials

White Diamond, Yellow Gold, Platinum

Jadeite Jade Diamond 3-Stone Platinum Ring
Located in Beverly Hills, CA
A classic 3-stone ring featuring a 3.65 carat natural jadeite jade! It has bright green color with
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Jade, Platinum

GRS Certified 3 Carat UNHEATED RUBY Diamond Cocktail Ring
Located in Chicago, IL
Exquisite platinum ring featuring an oval unheated ruby weighing approximately 3.00 carats
Category

2010s American Engagement Rings

Materials

Diamond, Ruby, Platinum

Padparadscha Sapphire Diamond 3-Stone Platinum Ring, GIA Certified
Located in Beverly Hills, CA
classic 3-stone ring is mounted in platinum. Ring Size: 7 (Sizable)
Category

21st Century and Contemporary More Rings

Materials

Diamond, White Diamond, Sapphire, Platinum

7 Carats Red Ruby and Diamond Platinum Ring
Located in London, GB
pavé diamond band. Ring Size: UK - M 1/2, US - 6 3/4 7.08 Carats Octagon Ruby - 11.5 x 10.7mm Side
Category

21st Century and Contemporary British Contemporary Three-Stone Rings

Materials

Ruby, Diamond, Platinum

Art Deco Diamond 18 Carat Gold and Platinum Panel Ring
Located in Chipping Campden, GB
This is an art deco panel ring. Modelled in 18 carat gold and stones set in platinum. The diamond
Category

Vintage 1910s British Art Deco Cluster Rings

Materials

Diamond, Gold, Platinum

1.05 Carat Diamond Yellow Gold and Platinum Engagement Ring
Located in Hicksville, NY
Item Details: Ring Size: 6 Metal Type: 14 karat Yellow Gold & Platinum Prongs [Tested and
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

White Diamond, 14k Gold, Yellow Gold, Platinum

3 Carat Radiant Yellow Diamond Engagement Ring
By Rare Colors
Located in New York, NY
This refined three-stone ring centers a 3.03-carat Fancy Light Yellow elongated radiant-cut diamond
Category

2010s American Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

2.16 Carat GIA Diamond Platinum Engagement Ring
Located in New York, NY
This gorgeous platinum engagement ring is centered with a sparkling GIA certified radiant cut
Category

20th Century Contemporary Engagement Rings

Materials

Diamond, Platinum

Art Deco Diamond Platinum and 18 Carat Gold Panel Ring
Located in Chipping Campden, GB
this ring being 17pts. Modelled in 18 carat gold and stones set in platinum. Size: R or 8 3/4 Panel
Category

Vintage 1910s British Art Deco More Rings

Materials

Diamond, Gold, Platinum

Diamond and Platinum Flower Ring
Located in San Francisco, CA
smaller round brilliant-cut diamonds totaling 2.60 carats. The ring weighs 6.7 grams, and is currently
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Platinum

GIA 1.93 ct Colombian Emerald and Diamond 3-Stone Ring in Platinum
Located in La Jolla, CA
GIA 1.93 ct Colombian Emerald and Diamond Ring in Platinum Emerald and Diamond Three-Stone Ring
Category

20th Century North American Three-Stone Rings

Materials

Diamond, Emerald, Platinum

GIA 1.56 ct Colombian Emerald and Diamond 3-Stone Ring in Platinum
Located in La Jolla, CA
GIA 1.56 ct Colombian Emerald and Diamond Ring in Platinum Emerald and Diamond Ring features a GIA
Category

20th Century North American Three-Stone Rings

Materials

Diamond, Emerald, Platinum

Platinum Diamond Ring, 0.50 Carat Old European Diamond and Side Diamond Estate
By Five Star Jewelry
Located in Austin, TX
original platinum setting! Set in the center of this estate engagement ring is an Old European cut diamond
Category

20th Century American Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified Antique 1.61 Carat Diamond and Platinum Ring Circa 1925
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive, antique 1.61 carat diamond and platinum GIA Certified ring; part
Category

Vintage 1920s Engagement Rings

Materials

Diamond, Platinum

Antique 1.16 Carat Diamond and Platinum Three Stone Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 1.16 carat diamond and platinum three stone ring; part of our diamond
Category

Vintage 1930s Unknown Three-Stone Rings

Materials

Diamond, Platinum

1.92 Carat Princess Cut Diamond Platinum Wedding Band Ring
Located in Stamford, CT
Princess cut diamond platinum wedding band ring is a masterpiece of elegance. The seven dazzling
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

.28 Carat Round Diamond Platinum Filigree Three Stone Ring
Located in Stamford, CT
Experience timeless elegance with our early 1920's platinum filigree three stone diamond ring. This
Category

Early 20th Century Fashion Rings

Materials

Diamond, Platinum

1.06 Carat Diamond Sapphire Platinum Engraved Engagement Ring
Located in Stamford, CT
1890-1900 diamond engagement ring. EGL certified transitional cut diamond center stone with 6 round
Category

Antique Late 19th Century More Rings

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

Vintage 2.09 carat yellow diamond platinum 18k yellow gold 3 stone ring
Located in Beverly Hills, CA
Accent stone: 2 oval cut diamonds Weight: 1.07 carats Color: H-I Clarity: SI Metal: Platinum and 18k
Category

20th Century Three-Stone Rings

Materials

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

GIA Certified 3 Ct. Emerald Cut Diamond Platinum Ring FLAWLESS CLARITY
Located in Chicago, IL
A refined statement of elegance and strength, this exquisite GIA-certified 3-carat diamond ring is
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Antique Diamond and Platinum Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1930s 0.67 carat diamond and platinum solitaire engagement
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, Platinum

GIA 4.29ct Emerald Cut Trapezoids 3 Stone Diamond Engagement Platinum Ring
Located in New York, NY
Impressive GIA 4.29ctw Emerald Cut Trilogy Diamond Engagement Anniversary Platinum Ring This
Category

2010s Modern Engagement Rings

Materials

Diamond, Platinum

1.42 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Platinum

2.66 Carat Marquise Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
A lovely engagement ring featuring a 2.66 carat marquise-shape diamond! It has a long beautiful
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

Gem Aquamarine Diamond Platinum 3-Stone Ring
Located in Beverly Hills, CA
of 0.21 carats. Hand-fabricated in platinum and ready to be appreciated and worn. Ring Size 5
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Aquamarine, Diamond, Platinum

Antique 1.32 Carat Diamond and Platinum Solitaire Engagement Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1.32 carat diamond and platinum solitaire ring with
Category

Vintage 1930s Engagement Rings

Materials

Diamond, Platinum

GIA 1 Carat Diamond Platinum Engagement Ring
Located in New York, NY
This fabulous platinum engagement ring from the Art Deco era, is centered with a sparkling GIA
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

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3 Carat Diamond And Platinum Rings For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of 3 carat diamond and platinum rings. These distinct designs — crafted with great care and often made from Platinum, Gold and 18k Gold — can elevate any look. Find a collection of 5275 vintage versions or 2941 modern creations for a more contemporary example of these cherished accessories. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 17th Century to those produced as recently as the 21st Century. The designs in our inventory of 3 carat diamond and platinum rings bearing Modern or Art Deco hallmarks are very popular. There have been many well-made iterations of these items over the years, but those made by LB Exclusive, David Gross Group and Tiffany Co. are often thought to be among the most beautiful. There are many round cut, oval cut and emerald cut 3 carat diamond and platinum rings for sale. When shopping our range of 3 carat diamond and platinum rings, you’ll find that there are less available pieces for men today than there are for women.

How Much are 3 Carat Diamond And Platinum Rings?

Prices for 3 carat diamond and platinum rings can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $360 and can go as high as $2,699,999, while 3 carat diamond and platinum rings, on average, fetch $5,093.

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.