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3 Ct Platinum Diamond Ring

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Platinum Sevilla Diamond Ring '3/4 Ct. tw'
Located in San Francisco, CA
This ring features five(5) floating Brilliante round diamonds set in "U" Shaped delicate prongs on
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Sharvit Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This ring features 8 Baguette cut diamonds interwind with 8 round brilliant diamond to create a
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Micro-Prong Diamond Ring '3 Ct. Tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Winte Diamond Ring '3/4 Ct. Tw'
Located in San Francisco, CA
This Delicate ring features Seven (7) floating Brilliante round diamonds set in "U" Shaped delicate
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Abigail Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This stackable double ring features two baguette diamond set within bars of delicate, precious
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Telara Baguette Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This ring features five (5) perfectly matched. Baguette-cut diamonds evenly spread. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum GIA French Pave Diamond Ring '3 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Micro-Prong Diamond Ring '3/4 Ct. Tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Minimalist Tivron Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This minimalist ring features eleven (11) round brilliant diamonds three-prong set in this delicate
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Minimalist Marjan Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This minimalist ring features alternating round brilliant and marquise shape diamonds prong set on
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Mia French Pave Diamond Eternity Ring '3 Ct. Tw'
Located in San Francisco, CA
: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Ethel Micro-Prong Diamond Ring '3/4 Ct. Tw'
Located in San Francisco, CA
This ring features 13 perfectly matched round brilliant diamonds micro-prong set. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Viola Eternity Micro-Prong Diamond Ring '3 Ct. tw'
Located in San Francisco, CA
: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type: Micro
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Soph Delicate Bezel Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
This delicate ring features five (5) round brilliant diamonds thinly bezel set on top of a 2mm wide
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Voyage French Pave Diamond Ring '3/4 Ct. Tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Voyage French Pave Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum GIA French Pave Diamond Ring '3/4 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum GIA French Pave Diamond Ring '1/3 Ct. Tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Petite Micro-Prong Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Valerie Micro-Prong Diamond Ring '3/4 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Petite Yamit Milgrain Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
This petite ring features five ( 5) floating Round brilliant diamonds in a marquise shape metal. A
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

3 Carats Diamonds Platinum Ring
Located in PARIS, FR
Ring trilogy in platinum 950 thousandths. set with 3 diamonds. of which a brilliant of
Category

20th Century French Engagement Rings

Materials

Diamond, Platinum

Platinum Diamond Ring 0.50 ct, 3.8g
Located in Laguna Beach, CA
Ladies' platinum and diamond ring. Stamped Plat and weighs 3.8 grams. The diamonds are round
Category

Mid-20th Century Solitaire Rings

Materials

Diamond, Platinum

Platinum Mia French Pave Diamond Eternity Ring '3/4 Ct. tw'
Located in San Francisco, CA
: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Viola Eternity Micro-Prong Diamond Ring '3/4 Ct. Tw'
Located in San Francisco, CA
: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type: Micro
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Delicate Nianna Marquise & Round Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
This delicate ring features alternating round brilliant and marquise cut diamonds in 0.35-carat
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Tima Delicate Scattered Organic Design Diamond Ring '3/4 Ct. tw'
Located in San Francisco, CA
This Delicate ring features nine (9) diamonds scattered on top of a 1.2 mm band. This summer of
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Edwardian 1.00 Ct Diamond Platinum Panel ring
Located in Napoli, IT
Edwardian Sensual and sinuous ballerina design ring, Platinum hand crafted as unique, 1900 ca Fine
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Platinum

Platinum Viola Mini Eternity Micro-Prong Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Mia Mini French Pave Diamond Eternity Ring '1/3 Ct. Tw'
Located in San Francisco, CA
Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Dganit Petite Scattered Organic Design Diamond Ring '1/3 Ct. tw'
Located in San Francisco, CA
This Delicate ring features sixteen(16) round brilliant diamonds scattered on top of a 1.2 mm band
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

2.90 Ct Ceylon Sapphire Diamond Platinum Ring
Located in Chicago, IL
This vintage platinum engagement ring features a natural unheated 2.90 ct Ceylon sapphire of an
Category

20th Century Cluster Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

3 Ct Cushio Blue Sapphire with Sapphire and Diamond Halos Platinum Ring
By FERRUCCI
Located in New York, NY
3 carat center Cushion Blue Sapphire set in a Double Sapphire and Diamonds Halo with a total
Category

2010s American Art Nouveau Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco 1.60 Ct Sapphire 1.40 Ct Diamond Platinum ring
Located in Napoli, IT
structured by a play of Diamonds and Sapphires Ring has been hand crafted of Platinum, marked Ceylon origin
Category

Vintage 1920s European Art Deco Band Rings

Materials

Diamond, Sapphire, Platinum

Beauvince Ariel 3 Stone Ring (5.82 ct Emerald Cut IVVS2 IGI Diamond) in Platinum
By Beauvince Jewelry
Located in New York, NY
The clean defined lines of this 3 diamond Emerald Cut engagement ring are reflection of strength
Category

2010s Engagement Rings

Materials

Diamond, White Diamond, Platinum

Ladies' Platinum Diamond Solitaire Engagement Ring 0.65 ct
Located in Laguna Beach, CA
Ladies' diamond solitaire engagement ring. Tests platinum and weighs 4 grams gross weight. The
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Platinum Lauren French Pave Eternity Ring '1/3 Ct. tw'
Located in San Francisco, CA
This stunning ring features French pave diamonds, a setting style that allows light to reach our
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

French 12.00 Ct. Blue Topaz 1.50 Ct Diamond Platinum Ring
Located in Napoli, IT
This fantastic vintage cluster ring is French origin, bearing hallmarks for Platinum and gold
Category

Mid-20th Century French Contemporary Cluster Rings

Materials

Diamond, Topaz, Blue Topaz, 18k Gold, Platinum

GIA CEYLON Blue Sapphire & Old Minor 3 CT Diamond Cocktail Ring Platinum Estate
Located in New York, NY
. Round diamond is approximately 2.5 ct and its old minor cut Platinum 8 gm Ring Size 8 There are small
Category

Vintage 1930s Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Sparkling Platinum Ring with 0.03 ct Natural Diamonds
Located in רמת גן, IL
A beautiful ring with a dazzling 0.03 carat princess cut diamond. The jewelry is made of platinum
Category

2010s Singaporean Band Rings

Materials

Diamond, Platinum

Dazzling Platinum Ring with 0.52 ct Natural Diamond
Located in רמת גן, IL
A beautiful ring with a dazzling 0.52 carat round brilliant diamonds. The jewelry is made of
Category

2010s Singaporean Solitaire Rings

Materials

Diamond, Platinum

Art Deco 1.60 Ct Diamond Platinum Halo Ring
Located in Napoli, IT
Details Below Metal: platinum Hallmarks: assay Gems: 1 old European cut diamond of approx 1.15 Ct (I/J/SI
Category

Vintage 1930s European Art Deco Engagement Rings

Materials

Diamond, Platinum

Platinum 10.32 Ct Round Brilliant Cut Diamond Ring
Located in Palm Desert, CA
Set in Platinum, weighing 11 grams, is one 10.32 carat Round brilliant Cut diamond, Color range of
Category

Late 20th Century More Rings

Materials

Diamond, Platinum

Edwardian .85 Ct Diamond .35 Ct Sapphire 18 KT Platinum Ring
Located in Napoli, IT
distinction and character Diamonds are old mine cut . 60 C. total with a .25 Ct the centre – G VVS/VS – high
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Platinum Micro-Prong Diamond Ring '1 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Belle Epoque 1.80 Ct. Diamond Plus Platinum ring
Located in Napoli, IT
brilliant and 2 Swiss cut diamonds totalling approx .90 Ct UK size: M 3/4 US size: 6.5 Measures: head is 16
Category

Early 20th Century European Belle Époque Engagement Rings

Materials

Diamond, Platinum

1.27-ct GIA Diamond Platinum Solitaire Ring Estate Jewelry
Located in Beverly Hills, CA
A diamond solitaire with accents and platinum ring of a classic design. The ring’s center stone
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

EGL 3.02 Ct H/VS2 Radiant Diamond Platinum 3-Stone Engagement Ring w. 2 Traps
By Sebastian Bernard
Located in Los Angeles, CA
A beautiful EGL US Certified Radiant Cut H/VS2 center Diamond set in a fine Platinum 3 stone
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

2.73 ct GIA Old Mine Cut Diamond Platinum Ring
Located in San Francisco, CA
Diamond (GIA M/VS2) set in its original platinum mounting. The center stone is flanked by 3 diamonds on
Category

Antique 1890s Unknown Engagement Rings

Materials

Diamond, Platinum

GIA Certified 3.20 Ct. Unheated Blue Sapphire and Diamond Platinum 3-Stone Ring
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This gorgeous blue sapphire and diamond three-stone ring features a brilliant 3.20 carat oval
Category

21st Century and Contemporary North American Artisan Three-Stone Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

3.02 Ct. Pink Tourmaline and Diamond Ring in Platinum
Located in Houston, TX
Platinum ring featuring a 3.02 carat pink tourmaline stone with two accent diamonds. Presentation
Category

Mid-20th Century Unknown Engagement Rings

Materials

Diamond, Tourmaline, Platinum

3.6tdw+ Platinum 3 Diamond Emerald Cut Ring
Located in Cincinnati, OH
The ring SPARKLES!! Three near colorless emerald cut, prong set diamonds. Center diamond is
Category

Late 20th Century Unknown Three-Stone Rings

Materials

Diamond, Platinum

1.40 Ct Natural Pink Sapphire 1.20 Ct G VVS Diamond Platinum Cluster Ring
Located in Napoli, IT
6.3 mm.) – 12 early brilliant cut diamonds totalling approx 1.20 Ct (G-VVS/VS) UK size: M 3/4 US size
Category

Mid-20th Century European Contemporary Cluster Rings

Materials

Diamond, Pink Sapphire, Platinum

Retro Platinum & Round Mixed Cut 0.95 Ct Diamond Engagement Ring
Located in Philadelphia, PA
A fine retro diamond engagement ring. Set in a platinum mounting. With a ca. 0.95 ct round mixed
Category

Mid-20th Century Retro Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.20 Ct Emerald Cut Diamond Solitaire Platinum Ring
Located in Napoli, IT
Diamond Allure This superb Art Deco period Diamond solitaire ring is 1925 ca. Hand crafted of solid
Category

Vintage 1920s European Art Deco Engagement Rings

Materials

Diamond, Platinum

Tacori Radiant Cut Diamond 3-Stone Platinum Engagement Ring
By Tacori
Located in Rome, IT
TACORI 3-Stone Platinum Engagement Ring. The ring weighs 5.9 grams, size 6.5, the center stone
Category

2010s American Modern Band Rings

Materials

Diamond, White Diamond, Platinum

Platinum 3 Stone Emerald Cut 2.25 Carats Diamonds Ring
Located in Miami, FL
Offered here is an elegant three stones ring, handmade in noble 950 platinum. Centered with a 1.01
Category

2010s North American Contemporary Engagement Rings

Materials

Diamond, Platinum

Art Deco Style 1.10 Ct Diamond Sapphire Solitaire Platinum Ring
Located in Napoli, IT
throughout Metal: platinum Hallmarks: assay Gems: cushion old mine cut diamond of approx 1.10 Ct (6,60 mm
Category

Vintage 1980s European Contemporary Solitaire Rings

Materials

Diamond, Sapphire, Platinum

Late Art Deco 1.50 Ct. G VVS Diamond Platinum Ring
Located in Napoli, IT
age Metal: platinum, tested Hallmarks: none/worn Gems: 1 early brilliant cut diamond of approx .72 Ct
Category

Vintage 1930s European Art Deco Cluster Rings

Materials

Diamond, Platinum

Platinum Mia French Pave Diamond Eternity Ring '4 Ct. tw'
Located in San Francisco, CA
: WHITE Side Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

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3 Ct Platinum Diamond Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 3 ct platinum diamond ring for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Platinum, Gold and 18k Gold. Find an antique version now, or shop for 574 vintage or 1072 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a 3 ct platinum diamond 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. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Finding an appealing 3 ct platinum diamond ring — no matter the origin — is easy, but LB Exclusive, Tiffany & Co. and Cartier each produced a popular version that is worth a look. See these pages for a round cut iteration of this accessory, while there are also emerald cut cut and oval cut cut versions available here, too. Most of our 3 ct platinum diamond ring for sale are for women, but there are 338 pieces available to browse for men.

How Much is a 3 Ct Platinum Diamond Ring?

On average, a 3 ct platinum diamond ring at 1stDibs sells for $7,062, while they’re typically $465 on the low end and $4,450,000 for the highest priced versions of this item.

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.