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Leo Round Diamond 1.01 Carat Solitaire Ring Platinum and 18 Karat White Gold
By The Leo Diamond
Located in San Diego, CA
Leo Diamond Engagement Ring Style: 4 - Prong Solitaire Certification: IGI 7092060A Metal: 18kt
Category

Early 2000s Solitaire Rings

Materials

Diamond, 18k Gold, White Gold, Platinum

18K Gold & Platinum 1.18ct Old European Cut Diamond Solitaire Open Work Ring
Located in Montclair, NJ
(approx.) Total Carat Weight: 1.18 (approx.) Material: Solid 18k Yellow Gold w/ Platinum Top Design
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

GIA Certified Pink Diamond Platinum Solitaire Ring
By HYT Jewelry
Located in Hong Kong, HK
This intricate ring features a spectacular Pink diamond set amongst scintillating white diamonds
Category

2010s Hong Kong Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Pink Diamond, Gold, 18k Gold, Rose Gold, Platinum

2.04 Carat Diamond Gold Platinum Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 2.04 carat asscher cut diamond and 18 karat yellow gold, platinum
Category

2010s Scottish Contemporary Solitaire Rings

Materials

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

1930s Platinum Set Diamond 18 Karat Gold Solitaire Ring
Located in Chipping Campden, GB
A stunning diamond solitaire ring crafted in the 1930s. The wonderful old European cut diamond sits
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

1950s French Diamond White Gold Platinum Set Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage French 0.55 carat diamond and 18k white gold, platinum set solitaire
Category

Vintage 1950s French Solitaire Rings

Materials

Diamond, 18k Gold, White Gold, Platinum

Art Deco Diamond, 18 Carat Gold and Platinum Solitaire Ring
Located in Chipping Campden, GB
This beautiful solitaire ring holds and old mine cut diamond that measures 50pts. The stone is set
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, Platinum, Gold

Edwardian Diamond Platinum and 18 Carat Yellow Gold Solitaire Ring
Located in Chipping Campden, GB
A stunning Edwardian diamond solitaire ring. The beautiful old European cut diamond measure
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Art Deco Diamond Platinum Solitaire Ring, Circa 1930's
Located in Wailea, HI
Art Deco Diamond Platinum Solitaire Ring Circa 1930's One Old European Cut diamond Weighing .87 [K
Category

Early 20th Century American Art Deco Solitaire Rings

Materials

Diamond, Platinum

1930s Antique Diamond and Yellow Gold Platinum Set Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 0.32 carat diamond and 18 karat yellow gold, platinum set solitaire
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Antique Diamond and White Gold Platinum Set Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
An impressive antique 1930s 0.83 carat diamond and 18 karat white gold, platinum set solitaire ring
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, White Gold, Platinum

Vintage 1960s Diamond and Yellow Gold Platinum Set Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive platinum set vintage 0.35 carat diamond solitaire ring in 18 karat yellow
Category

Vintage 1960s Solitaire Rings

Materials

Diamond, Yellow Gold, Platinum

French 1940s Diamond 18 Karat Yellow Gold Platinum Solitaire Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle head hallmark and platinum. Splendid retro ring, it is adorned
Category

Vintage 1940s French Retro Solitaire Rings

Materials

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

Vintage and Contemporary 0.22Ct Diamond and 18k White Gold Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine vintage 0.22 carat diamond solitaire ring crafted in contemporary 18 karat white gold with a
Category

Vintage 1970s Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Antique 1920s Diamond and White Gold with Platinum Set Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 0.65 carat diamond and 18 karat white gold, platinum set solitaire
Category

Vintage 1920s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, White Gold, Platinum

Antique Diamond Solitaire Ring
Located in London, GB
Here we have a beautifully crafted diamond solitaire ring which dates back to the Victorian period
Category

Antique 19th Century Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Art Deco Inspired 0.19 Carat Diamond Yellow Gold & Platinum Solitaire Ring
Located in London, GB
ethical alternative to newly mined diamonds. 1 Diamond 0.19 carats Platinum & 18 carat yellow gold UK
Category

2010s British Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Unique Platinum Solitaire Ring with 0.80 Ct Natural Diamonds, IGI Cert
Located in רמת גן, IL
Stunning solitaire platinum ring with 0.80 total carat of cut cornered square mixed cut diamond
Category

2010s Singaporean Solitaire Rings

Materials

Diamond, Platinum

Antique French Diamond and 18k White Gold Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 0.97 carat diamond and 18 karat white gold, platinum set solitaire
Category

Vintage 1930s French Solitaire Rings

Materials

Diamond, White Gold, Platinum

Antique 0.83 Carat Diamond and 18k Yellow Gold Solitaire Ring, Circa 1920s
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.83 carat diamond, 18 karat yellow gold and platinum solitaire ring; part of
Category

Vintage 1920s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

1.25 Carat Old European Cut Diamond Solitaire Art Deco Platinum Ring
Located in London, GB
platinum (tested). It is set with an old European cut diamond weighing around 1.25ct with an illusion
Category

Vintage 1920s French Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

3.48 Carat Ruby and Diamond Solitaire Ring in Platinum and 18 Karat
Located in Wailea, HI
3.48 carat Ruby and Diamond Solitaire Ring in Platinum and 18k A Lively 3.48 carat Cushion
Category

Late 20th Century American Solitaire Rings

Materials

White Diamond, Ruby, Platinum, 18k Gold

Antique 0.33 Carat Diamond and 18k White Gold Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.33 carat diamond, 18 karat white gold and platinum engagement ring; part of
Category

Vintage 1930s French Solitaire Rings

Materials

Diamond, White Gold, Platinum

Certified Round Brilliant Cut Diamond Solitaire Ring in Platinum and Gold
Located in London, GB
A beautiful certified round brilliant cut diamond single solitaire ring set in 18k yellow gold and
Category

2010s British Modern Solitaire Rings

Materials

Diamond, Gold, Platinum

Antique 0.56 Carat Diamond and 18k White Gold Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 0.56 carat diamond and 18 karat white gold solitaire engagement ring
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, White Gold, Platinum

J. Birnbach 3.01ct GIA GVS1 Oval Diamond Solitaire Engagement Ring in 18K Gold
By J. Birnbach
Located in New York, NY
solitaire crafted in platinum and 18K yellow gold. The crown is in platinum, so the prongs disappear against
Category

2010s American Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Antique 1.20 Carat Diamond and 18k Rose Gold Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1.20 carat diamond, 18 karat rose gold and platinum set
Category

20th Century French Solitaire Rings

Materials

Diamond, Rose Gold, 18k Gold

Antique 1.23 Carat Diamond and 18k Yellow Gold Solitaire Ring, circa 1910
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 1.23 carat diamond, 18 karat yellow gold and platinum set solitaire
Category

Vintage 1910s Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

Solitair ring set with diamond 18k white gold and Platinum
Located in The Hague, ZH
Platinum and 18k white gold solitaire ring set with old mine cut diamonds. 1.30ct - J/K - VS/SI
Category

Vintage 1910s Dutch Art Nouveau Solitaire Rings

Materials

Diamond, 18k Gold, White Gold, Platinum

GIA 10.42ct Asscher Cut Diamond Solitaire Ring, VS1 Clarity, 18k Yellow Gold
Located in New York, NY
An impressive diamond solitaire ring with a 10.42-carat GIA-certified Asscher cut diamond
Category

21st Century and Contemporary Unknown Art Deco Solitaire Rings

Materials

Diamond, Gold, Yellow Gold, Platinum

Stunning 18k White Gold 3.00 Carat Round Brilliant Diamond Solitaire Ring
Located in רמת גן, IL
Stunning 3.00 Carat Round Brilliant Diamond Solitaire Ring This exquisite solitaire ring showcases
Category

2010s Israeli Solitaire Rings

Materials

Diamond, Gold, 18k Gold, White Gold

GIA Certified 2.05 Carat White Diamond in Platinum 950 Solitaire Engagement Ring
By FERRUCCI
Located in New York, NY
, Symmetry and Polishing, set in hand made Platinum 950 gold Solitaire engagement ring, made in New York City
Category

2010s American Modern Solitaire Rings

Materials

White Diamond, 18k Gold

Edwardian 0.75ct Diamond Solitaire Ring, c.1910s
Located in London, GB
, finely claw set into a platinum collet. The diamond is G in colour and SI1 in clarity. A band of 18ct
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian 0.70ct Diamond Solitaire Ring, c.1900s
Located in London, GB
diamond. The diamond has a colour of H and a clarity of VS1 and is claw set into an open platinum collet
Category

Antique Early 1900s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian 1.50ct Diamond Solitaire Ring, c.1910s
Located in London, GB
This classic solitaire ring features an impressive 1.50 carat old cut diamond at its centre. The
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Retro French 2.00 Carat Old European Cut Diamond 18k Yellow Gold Platinum Solita
Located in Beverly Hills, CA
One Retro French 2.00 Carat Old European Cut Diamond 18k Yellow Gold Platinum Solitaire Ring
Category

Vintage 1940s Solitaire Rings

Materials

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

Edwardian 0.80ct Diamond Solitaire Ring, c.1910s
Located in London, GB
and shoulders of this beautiful piece are crafted in platinum, whilst the band is of 18 carat yellow
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian 1.01ct Diamond Solitaire Ring, c.1910s
Located in London, GB
additional two old cut diamonds set to either side, totalling to 0.08 carats. Finishing off this solitaire
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Victorian 0.90ct Diamond Solitaire Ring, c.1880s
Located in London, GB
. Boasting a 0.90 carat diamond at it's centre, the old cut stone has been set into a platinum collet. The
Category

Antique 1880s Unknown Victorian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian Diamond Solitaire Engagement Ring, circa 1910
Located in London, GB
This elegant and classic solitaire features an old cut diamond set to centre. The stone, which
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Vintage 0.35 Carat Diamond Solitaire Engagement Ring, circa 1950s
Located in London, GB
brilliant cut, and is an excellent F colour and VS2 clarity. The diamond is set in a platinum illusion
Category

Vintage 1950s Unknown Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Emerald Cut Emerald and Round Diamond Solitaire Ring in 18k White Gold
Located in Bangkok, TH
-cut diamonds, for a look that never go out of style. Ring Information Style: Art-deco Metal: 18K
Category

21st Century and Contemporary Unknown Art Deco Solitaire Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Edwardian 0.68ct Diamond Solitaire Ring, c.1910s
Located in London, GB
: Diamond Stone Shape: Old Cut Carat Weight: 0.68 Colour: H Clarity: VS2 Metal: 18ct Yellow Gold, Platinum
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Platinum & 18k Gold GIA Fancy Pinkish Brown Diamond Flower Halo Engagement Ring
Located in Montclair, NJ
) Material: Solid .950 Platinum w/ 18k Solid Rose Gold Center Basket & Center Prongs Weight: 9.34 Grams Ring
Category

2010s American Solitaire Rings

Materials

Brown Diamond, 18k Gold, Rose Gold, Platinum

Edwardian Solitaire Diamond Ring, circa 1910
Located in London, GB
Edwardian solitaire diamond ring. Set to centre with a round old cut diamond, K colour, SI2 clarity
Category

Vintage 1910s Unknown Solitaire Rings

Materials

Diamond, Yellow Gold, Platinum

Victorian Diamond Solitaire Engagement Ring, circa 1900s
Located in London, GB
intricate design which has been hand crafted in 18 carat rose gold. Gemstone: Diamond Stone Shape: Old Cut
Category

Antique Early 1900s Unknown Victorian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

1.03 carats F/Si1 emerald cut diamond solitaire
Located in PARIS, FR
Stones: 1.03 carats F/Si1 emerald cut diamond Material: Platinum and 18k gold Dimensions: 6mm
Category

Vintage 1970s Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

GIA Certified 5.11 Carat Diamond Solitaire Ring
Located in Palm Beach, FL
Stunning 5.11 Carat Diamond set in 18K Yellow Gold ring with Platinum mounting. Diamond is GIA
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Art Deco 0.50ct Diamond Solitaire Ring, c.1920s
Located in London, GB
Hand crafted in the 1920s this diamond solitaire ring showcases the beauty of the Art Deco era
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Art Deco 0.70ct diamond solitaire ring, c.1920s
Located in London, GB
: Diamond Stone Shape: Old Cut Carat Weight: 0.70 Colour: I Clarity: VS1 Metal: 18ct White Gold, Platinum
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

1920s, Diamond and Yellow Gold Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 0.58 carat diamond and 18k yellow gold solitaire ring with a platinum
Category

Vintage 1920s Unknown Solitaire Rings

Materials

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

Late Deco 0.65ct Diamond Solitaire Ring, c.1940s
Located in London, GB
has been claw set into platinum whilst the band is crafted from platinum. Gemstone: Diamond Stone
Category

Vintage 1940s Unknown Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

New Platinum & 18k Gold 2.77ctw GIA NO HEAT Red Spinel w/ Diamond Halo Ring
Located in Montclair, NJ
Carat Weight: 2.77 (exact) Material: Solid .900+ Platinum w/ 18K Yellow Gold Prongs Weight: 8.0 Grams
Category

2010s American Solitaire Rings

Materials

Diamond, Spinel, 18k Gold, Platinum

Edwardian 0.51 Carat Diamond Solitaire Ring, circa 1910
Located in London, GB
Dating to 1910, this solitaire highlights a 0.51 carat old cut diamond. It has been claw set within
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian Illusion Set Diamond Solitaire Ring, circa 1910
Located in London, GB
This delicate little solitaire ring features a 0.30 carat old cut diamond within a rub over
Category

Vintage 1910s Unknown Edwardian Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Antique 1.40 Carat Solitaire Diamond Engagement Ring
Located in Denver, CO
This classic solitaire engagement ring features a stunning Old European cut diamond weighing 1.40
Category

Mid-20th Century Unknown Retro Solitaire Rings

Materials

Diamond, 14k Gold, 18k Gold, Yellow Gold, Platinum

Antique 18k Rosy Gold Platinum Oval Cabochon Persian Turquoise Diamond Halo Ring
Located in Montclair, NJ
Diamond Weight: 0.80 (approx.) Material: Solid 18k Rosy Yellow Gold w/ Solid .900 Platinum Halo Weight
Category

Antique 18th Century Victorian Solitaire Rings

Materials

Diamond, Turquoise, Gold, Platinum

1925 Halo Ring natural 0.5ct Ruby 0.3ct Diamonds 18K Gold Platinum ØUS8.25/3.5gr
Located in SE
Beautiful 99 years old Swedish Halo Ring with parts in solid 18K Yellow Gold and Platinum. Claw
Category

Vintage 1920s Swedish Art Deco Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

Art Deco 0.78ct Diamond Solitaire Ring, c.1930s
Located in London, GB
of four diamonds, totalling to 0.08 carats. The diamonds have been set within platinum with a milli
Category

Vintage 1930s Unknown Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

J. Birnbach 5.01 carat Radiant Diamond Solitaire Engagement Ring
By J. Birnbach
Located in New York, NY
of the modern solitaire. The ring showcases a 5.01 carat GIA certified radiant cut diamond, with K
Category

2010s American Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

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Diamond Solitaire Platinum 18k For Sale on 1stDibs

On 1stDibs, you can find the most appropriate diamond solitaire platinum 18k for your needs in our varied inventory. Frequently made of Platinum, Gold and 18k Gold, this item was constructed with great care. Find an antique version now, or shop for 413 vintage or 111 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a diamond solitaire platinum 18k 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. 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. A diamond solitaire platinum 18k from Tiffany & Co., Antinori Fine Jewels and J. Birnbach — each of whom created a beautiful version of this treasured accessory — is worth considering. 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 old european cut and cushion cut alternatives. Finding a diamond solitaire platinum 18k for sale for women should be easy, but there are 189 pieces available to browse for unisex as well as men, too.

How Much is a Diamond Solitaire Platinum 18k?

Prices for a diamond solitaire platinum 18k can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $450 and can go as high as $2,200,000, while this accessory, on average, fetches $5,512.

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.