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7 Carat Platinum Diamond Ring

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Vintage 1930-40’s .58ct Diamond Platinum Engagement Ring
Located in Scotts Valley, CA
Details: Lovely classic 1930-40's platinum ring with an European Cut Diamond, lovely natural
Category

Mid-20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

Ruby Ring Set in Platinum with Diamonds
Located in Hong Kong, HK
carats and diamond weight is .24 carats. The ring dimension in cm .7 x 1.8 x 2 (LXWXH). US size 6 1/2.
Category

2010s Indian Band Rings

Materials

Diamond, Ruby, Platinum

2 Carats Three Row Round, Baguette and Princess Cut Platinum Band Ring
By Antinori Fine Jewels
Located in Chicago, IL
2 carats Platinum 3 Three Row Round, Baguette & Princess Cut Diamond Half Circle Wedding Band
Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Platinum Tahitian Pearl and 1.01tcw Diamond Ring
Located in New York, NY
This sophisticated ring is crafted in platinum and showcases a luminous Tahitian pearl at its
Category

20th Century Modern Engagement Rings

Materials

Diamond, Pearl, Platinum

Platinum Emerald Diamond Ring - Pear Cut 2.84ctw
Located in Greensboro, NC
Size: 7 Sizing Fee: Up 1/2 a size for $60 or Down 1/2 a size for $60 Metal Content: 90% Platinum
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, Platinum

Modern Art Deco Sapphires Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum. Octagonal- shaped, this charming art deco ring is adorned with a brilliant-cut
Category

2010s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Sapphire and Diamond 18 Carat Gold and Platinum Cluster Panel Ring
Located in Chipping Campden, GB
measure approx 10pts each and the diamond total is approx 40pts. Ring Size:O or 7 1/4 Cluster Dimensions
Category

Vintage 1910s British Art Deco Cluster Rings

Materials

Diamond, Sapphire, Gold, Platinum

1.72 Carat Asscher Cut Diamond Halfway Band in Platinum, Size 6
Located in New York, NY
timeless appeal of step-cut diamonds. Crafted in enduring platinum, the ring features seven perfectly
Category

2010s American Contemporary Band Rings

Materials

Diamond, Platinum

Antique 1.29ct Old Mine Cut Diamond 18 Carat Gold and Platinum Engagement Ring
Located in London, GB
genuine stones set on the rings' shoulders. An elegant high polish 18 carat yellow gold band complements
Category

Vintage 1930s English Edwardian Engagement Rings

Materials

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

Tiffany Co 1.10 Carat Round Brilliant Diamond White Platinum Engagement Ring
Located in New York, NY
Engagement Ring Style: Engagement Metal: White Platinum Gemstone 1: 1.1 Carat Diamond Number of Stones: 1
Category

20th Century Engagement Rings

Materials

Diamond

Azalea 14k White Gold Diamond Ring – 0.40ct Natural Diamonds Size 7
Located in Greeneville, TN
14k white gold, this enchanting ring features 0.40 carats of natural diamonds, artfully arranged to
Category

21st Century and Contemporary American Modern Wedding Rings

Materials

Diamond, White Gold, Platinum

3.03 Carat Oval Diamond Ballerina Ring
Located in New York, NY
Diamond Weight: 3.03 carat Approximate Tapered Baguette Diamond Weight: 4.01 carats Ring Size: 7
Category

20th Century Unknown Cocktail Rings

Materials

Diamond, Yellow Diamond, Platinum

Art Deco Platinum Diamond and Ruby Ring
Located in Aventura, FL
This stunning Art Deco platinum ring features a brilliant 0.55-carat round diamond surrounded by
Category

Vintage 1920s Unknown Art Deco Cocktail Rings

Materials

Diamond, Ruby, Platinum

Art Deco Ruby Diamond Platinum Ring 1930S
Located in Geneva, CH
centerpiece of the ring is a stunning 1.20 carat natural ruby, which is surrounded by sparkling diamonds. The
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Late Art Deco Diamond and Platinum Ring, 0.85 Carats H SI1, Circa 1940
Located in London, GB
A late Art Deco diamond ring, set with a 0.85ct, H colour, SI1 clarity, Edwardian-cut diamond, in a
Category

Vintage 1940s American Art Deco Engagement Rings

Materials

Diamond, Platinum

1950 s 5.00 Carat Marquise Diamond Eternity Band in Platinum
Located in New Orleans, LA
platinum. Delight in the brilliance of each diamond, radiating with E-F color for a captivating display of
Category

Vintage 1950s European Retro Band Rings

Materials

Diamond, Platinum

GIA Certified 3.06 Carat Heart Cut K/VS2 Solitaire Platinum Engagement Ring
Located in Miami, FL
Metal: Platinum Ring Size: 7 Setting: 4-Prong   Center Stone Details: Type: Diamond Carat: 3.06 Carat
Category

21st Century and Contemporary Modern Solitaire Rings

Materials

Diamond, Platinum

Blue Ceylon Sapphire and Diamond Platinum Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 2.55 carat Ceylon sapphire and 0.20 carat diamond, platinum
Category

Vintage 1940s Unknown Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Vintage 1950s 4.50 Carat Diamond Ring
Located in New York, NY
Finely crafted in platinum with Round Brilliant cut Diamonds weighing approximately a total of 4.50
Category

Vintage 1950s Cocktail Rings

Materials

Diamond, Platinum

Vintage 1930s Art Deco Platinum Diamond Engagement Ring .65ct
Located in Boston, MA
A true classic from the Art Deco era, this platinum ring exudes timeless elegance. The centerpiece
Category

Vintage 1930s Art Deco Bridal Rings

Materials

Diamond, Platinum

Breathtaking Platinum Vivid Sapphire Diamond Halo Ring
Located in Bloomington, MN
Breathtaking Platinum Vivid Sapphire & Diamond Ring Indulge in the breathtaking beauty of this
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Antique 0.88ct Sapphire and Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 0.88 carat sapphire and 0.09 carat diamond, platinum cocktail ring
Category

20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

Platinum Anie Petite Diamond Ring 1/10 Ct. tw
Located in San Francisco, CA
This ring features 7 round brilliant diamond micro prong set. Experience the difference! Product
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

9.27 Carat Natural Alexandrite and Diamond Ring
Located in New York, NY
diamonds, weighing approximately 0.70 carats total (F-VS), set in Platinum. The Alexandrite measures 13.89
Category

20th Century American Cocktail Rings

Materials

Alexandrite, Diamond, Platinum

Platinum Pink Tourmaline and Diamond Halo Ring
Located in Laguna Beach, CA
carat weight of 1.0. The ring is accented by twelve round brilliant diamonds, with a total carat weight
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

Platinum Minimalist Ophra Diamond Ring 1/4 Ct. tw
Located in San Francisco, CA
This Minimalist ring features seven (7) round brilliant diamonds evenly scattered. Each diamond is
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

GIA 5.24ctw Trillion Diamond Engagement Halo Pave Platinum Ring
Located in New York, NY
Platinum COLORLESS Diamond Trillion Diamond ring from our Estate Collection. Incredible opportunity to own
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Edwardian 18k/Platinum Ruby Diamond Navette Ring
Located in Narberth, PA
and platinum, this ring features a navette-style centerpiece. The centerpiece features 5 mine cut
Category

Antique Early 1900s Edwardian Engagement Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

Platinum Valerie Micro-Prong Diamond Ring 2 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 Gold Pavia "U" Diamond Ring 1 Ct. tw
Located in San Francisco, CA
This ring features 7 round brilliant diamonds in a total weight of 1 carat set in a delicate ""U
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum, Gold

Vintage 1.54Ct Diamond and Platinum Full Eternity Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 1980's 1.54 carat diamond and platinum full eternity ring
Category

Vintage 1980s Unknown Band Rings

Materials

Diamond, Platinum

7.25 Carat No Heat Cushion Cut Ruby Diamond Halo Platinum 18K Gold Ring
Located in Miami, FL
red, unheated, and from Siam (Thailand). Set in 18k yellow gold and platinum with a round cut diamond
Category

1990s Art Deco Cocktail Rings

Materials

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

Platinum Diamond Art Deco Engagement Ring - Round Brilliant .49ctw Vintage
Located in Greensboro, NC
: 1930s - 1940s Metal Content: 90% Platinum Stone Information Natural Diamond Carat(s): .40ct Cut
Category

Vintage 1930s Engagement Rings

Materials

Diamond, Platinum

4.11 Carat No Heat Burmese Star Ruby Diamond Platinum Ring Estate Fine Jewelry
Located in Montreal, QC
Beautiful Burmese Star Ruby and Diamond Art Deco Style Platinum Cocktail Ring, center securely set
Category

20th Century Art Deco Cocktail Rings

Materials

Diamond, Ruby, Star Ruby, Platinum

Bi-Color Tourmaline Diamond Platinum Floral Ring
Located in Beverly Hills, CA
A lovely platinum ring featuring a unique bicolor tourmaline. The tourmaline weighs 12.32 carats
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Tourmaline, Platinum

Art Deco Platinum Diamond and Sapphire Engagement Ring 1.03ct
Located in Narberth, PA
! Crafted in platinum, this ring features a central, 1.03ct old European cut diamond, which rests within a
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Platinum Diamond Ring with Marquise, Baguette and Round Diamonds
By Diana M. Jewels
Located in New York, NY
Platinum Multi row diamond ring, with marquise center row. 4.50 Carats of Marquise, baguette and
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Diamond, Platinum

Platinum GIA Certified 4.26 Carat Emerald Cut Blue Sapphire Engagement Ring
Located in Los Angeles, CA
, 0.59 Carats. GIA Sapphire Report Number 6234403984 Size- 7 3/4. FREE SIZING. Handmade Platinum One
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

GIA Certified .74 Carat Art Deco Diamond Platinum 18 Karat YG Engagement Ring
Located in Hicksville, NY
Item Details: Ring Size: 7 Metal Type: Platinum & 18 Karat Yellow Gold [Hallmarked, and Tested
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, 18k Gold, Platinum

Vintage 1950s 1.90 Carat Diamond Ring
Located in New York, NY
Finely crafted in platinum featuring a center Round Brilliant cut Diamond weighing approximately
Category

Vintage 1950s Engagement Rings

Materials

Diamond, Platinum

GIA Certified 1.26 Orange Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
.26 carats Size 7 and sizable Platinum Stamped: 10% IRID PLAT 3.1 grams Width at top: 7.66mm Height
Category

Early 20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco 1.82CTW Diamond Ring Crafted in Platinum
Located in Webster, NY
Beautiful Art Deco Platinum diamond ring with 1.82CTW of diamonds. Center Diamond Carat Weight
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

Platinum PT900 Blue Sapphire Ring with Diamonds
Located in Hong Kong, HK
A beautiful and elegant diamond and blue sapphire ring set in Platinum PT900 . Excellent for
Category

2010s Hong Kong Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Platinum target Ring with blue Sapphires and Diamonds
Located in Aventura, FL
This elegant platinum target ring features a captivating center old mine-cut diamond of
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

1950s Diamond and Yellow Gold Platinum Set Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage 0.86 carat diamond and 14 karat yellow gold, platinum set vintage
Category

Vintage 1950s Unknown Cluster Rings

Materials

Diamond, 14k Gold, Platinum, Yellow Gold

GRS Certified 12.88 Ct. Ceylon Sapphire Diamond Platinum Ring
Located in Chicago, IL
Centering a shaped cushion, framed by half moon diamonds Sapphire weighing 12.88 carats Diamonds
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

GRS Certified 25 Heart Shape Emerald Diamond Platinum Ring
Located in Chicago, IL
pave round diamonds. emerald weighing 25 carats Size 7 Platinum Accompanied by Grs report stating
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Emerald, Platinum

Art Deco 3 Carat Diamond and Ruby Tablet or Plaque Ring in Platinum, Circa 1925
Located in Sherman Oaks, CA
cuts from another vintage piece. The total estimated diamond weight is 3.06 carats. The step-cut
Category

Early 20th Century Unknown Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Ruby, Platinum

Deep Blue sapphire diamond ring in platinum
Located in Boca Raton, FL
Luxurious engagement ring or a cocktail ring made in platinum and 18KT yellow gold. The center is a
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Platinum

Vintage Red Carpet 1.01 Carat Diamond and Sapphire Platinum Statement Ring
Located in Montreal, QC
Cocktail Ring. Centering a securely nestled Hand set 1.01 Carat Round Brilliant Cut Diamond. Surrounded by
Category

Late 20th Century Modernist Cocktail Rings

Materials

Diamond, Sapphire

Intense Unheated Pink Sapphire Diamond Platinum Ring
Located in Miami Beach, FL
2.64 carats set amongst 18 diamonds that weight approximately carats. Mounted in a platinum ring with
Category

Mid-20th Century Cocktail Rings

Materials

Diamond, Pink Sapphire, Platinum

Platinum 6.00 Carat Cushion Cuts Diamond Eternity Band
Located in New York, NY
feel to a stack of bands. Ring size 7. Ring width: 5mm Cushion-Cut: 17 Diamonds Color: H-I color, VS2
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Platinum

Retro Era Platinum Diamond Band Style Ring
Located in Montgomery, AL
Finger Size: 7 1/4 Sizing Available Upon Request Diamond Details 1 - 7mm X 3.5mm X 2.4mm Marquise
Category

Mid-20th Century Retro Band Rings

Materials

Diamond, Platinum

Tiffany Co. Diamond Platinum Contemporary Logo Band Ring
By Tiffany Co.
Located in Philadelphia, PA
high polish finish Stamped for platinum Fully signed for Tiffany & Co. Circa: 2020s Ring size: 7 1/4
Category

21st Century and Contemporary Contemporary Wedding Rings

Materials

Diamond, Platinum

Diamond Five-Stone Wedding Band Platinum 950 Round 1.86ctw Anniversary Ring
Located in Greensboro, NC
Size: 7 1/2 Sizing Fee: Up 2 sizes for $70 or Down 1/2 a size for $50 Metal Content: Platinum 950
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Platinum Diamond Solitaire Engagement Ring - Princess Cut .45ct GIA Cathedral
Located in Greensboro, NC
Information Natural Diamond Carat(s): .45ct Cut: Princess Color: E Clarity: VS1 Certified by: GIA Report
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Platinum Diamond Double Halo Engagement Ring - 950 Round 2.80ctw Cathedral
Located in Greensboro, NC
Size: 7 3/4 Sizing Fee: Up 2 sizes for $50 Metal Content: 950 Platinum Stone Information Natural
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

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7 Carat Platinum Diamond Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 7 carat platinum diamond ring for your needs in our varied inventory. Frequently made of Platinum, Gold and 18k Gold, this item was constructed with great care. 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 7 carat platinum 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. For this particular piece, .5 Carat and 1 Carat are consistently popular carat weights. Creating a 7 carat platinum diamond ring has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Tiffany Co. and Roman Malakov are consistently popular. See these pages for a round cut iteration of this accessory, while there are also emerald cut cut and old european cut cut versions available here, too. If you’re browsing our inventory for a 7 carat platinum diamond ring, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 7 Carat Platinum Diamond Ring?

Prices for a 7 carat platinum diamond ring can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $19 and can go as high as $475,940,000, while this accessory, on average, fetches $10,497.

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.