Skip to main content

Diamond And Platinum Half Eternity Ring

to
41
217
173
360
145
79
35
24
15
14
12
10
8
6
6
6
6
4
4
2
1
1
1
1
66
51
18
9
6
Sort By
Vintage Diamond and Platinum Half Eternity Ring
Located in Chipping Campden, GB
The princess cut diamonds in this ring total approximately 1.2ct and give such a wonderful shimmer
Category

Vintage 1960s British Band Rings

Materials

Diamond, Platinum

Diamond Platinum Half Eternity Ring
Located in Los Angeles, CA
Diamond and platinum half eternity ring size 5, circa 1990. We are here to connect you with
Category

1990s Contemporary Wedding Rings

Materials

Diamond, Platinum

1.66 carat Diamond and Platinum Half Eternity Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive contemporary 1.66 carat diamond and platinum half eternity ring
Category

Early 2000s Unknown Engagement Rings

Materials

Diamond, Platinum

1.40 Carat Ruby and 0.55 Carat Diamond, Platinum Half Eternity Ring Circa 1990
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 1.40 carat ruby, 0.55 carat diamond and platinum half
Category

1990s Unknown Band Rings

Materials

Diamond, Ruby, Platinum

Half Eternity Diamond Ring in Platinum
Located in London, GB
This elegant ring features a row of gleaming Diamonds set in a flawless Platinum band. The diamonds
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co Diamond Platinum Half Eternity Ring
By Tiffany & Co.
Located in London, GB
A Tiffany & Co diamond platinum half eternity ring. This timeless and elegant eternity band, is
Category

2010s British Modern Wedding Rings

Materials

Diamond, Platinum

Timeless 0.58ct Diamonds Half Eternity Ring in Platinum
Located in רמת גן, IL
This sophisticated ring, crafted in platinum, is adorned with a collection of 11 main stones, all
Category

2010s Singaporean Engagement Rings

Materials

Diamond, Platinum

Vintage Tiffany & Co. Diamond Half Eternity Ring in Platinum
By Tiffany & Co.
Located in London, GB
A beautiful vintage Tiffany & Co. diamond half-eternity ring set in platinum. The ring is composed
Category

21st Century and Contemporary Modern Wedding Rings

Materials

Diamond, Platinum

Vintage Tiffany & Co. Diamond Half Eternity Ring in Platinum
By Tiffany & Co.
Located in London, GB
A beautiful vintage Tiffany & Co. diamond half-eternity ring set in platinum. The ring is composed
Category

21st Century and Contemporary Modern Wedding Rings

Materials

Diamond, Platinum

Vintage Tiffany & Co. Half Eternity Diamond Ring in Platinum
By Tiffany & Co.
Located in London, GB
A beautiful vintage Tiffany & Co. diamond half-eternity ring set in platinum. The ring is composed
Category

Early 2000s Modern Wedding Rings

Materials

Diamond, Platinum

Vintage Tiffany & Co. Half Eternity Diamond Ring in Platinum
By Tiffany & Co.
Located in London, GB
A beautiful vintage Tiffany & Co. diamond half-eternity ring set in platinum. The ring is composed
Category

21st Century and Contemporary Modern Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co. Brilliant Cut Diamond Platinum Half Eternity Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. Brilliant Cut Diamond Platinum Half Eternity Ring Product Details Xupes Ref: J1458
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co. Brilliant cut Diamond Platinum Half Eternity Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. Brilliant cut Diamond Platinum Half Eternity Ring Product Details Xupes Ref: J1446
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co. Brilliant Cut Diamond Platinum Half Eternity Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. 0.85ct Brilliant Cut Diamond Platinum Forever Full Eternity Ring Product Details
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Vintage 1990s Platinum, Emerald Cut Diamond Half Eternity Ring
Located in Brighton, GB
Vintage Diamond Ring Platinum Circa 1990s Introducing our exquisite Vintage 1990s Platinum Half
Category

Late 20th Century European Band Rings

Materials

Diamond, Platinum

1.82 Carat Sapphire and Diamond Half-Eternity Ring Made in Platinum
Located in Tokyo, JP
A beautiful ring featuring 1.82 Carats of Natural Sapphires and 0.996 Carats Diamond Accents set in
Category

21st Century and Contemporary Japanese Modern Band Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Platinum 1.59 TCW Diamond Half Eternity Wedding Band and Engagement Ring GIA
Located in New York, NY
Cert. (Engagement Ring Center Stone) Half Eternity Wedding Band Ring: Weight: 3.9 grams Stone: 0.33
Category

21st Century and Contemporary Contemporary Wedding Rings

Materials

Diamond, Platinum

Platinum 1.59 TCW Diamond Half Eternity Wedding Band and Engagement Ring GIA
Located in New York, NY
Cert. (Engagement Ring Center Stone) Half Eternity Wedding Band Ring: Weight: 3.9 grams Stone: 0.33
Category

21st Century and Contemporary Contemporary Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co. Round Brilliant Diamond Platinum Embrace Half Eternity Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. Round Brilliant Diamond Platinum Embrace Half Eternity Ring Product Details Xupes
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Vintage diamond platinum half eternity wedding band
Located in Beverly Hills, CA
A refined vintage platinum ring from the 1980s, adorned with 13 sparkling baguette and transitional
Category

Vintage 1980s Modern Wedding Rings

Materials

Diamond, Platinum

House of RAVN, Old World Platinum Half Eternity Diamond Ring
Located in Los Angeles, CA
Platinum half diamond eternity ring, with 3 princess cut diamonds (.54ct) and 4 round diamonds
Category

2010s American Contemporary Band Rings

Materials

Diamond, Platinum

Luminous 0.35ct Princess Cut Half Eternity Diamond Ring in Platinum
Located in רמת גן, IL
Experience the ultimate in luxury with this exquisite platinum ring, adorned with 11 stunning
Category

2010s Singaporean Band Rings

Materials

Diamond, Platinum

1.97 Carat Natural Ruby and Diamond Half-Eternity Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring made in Platinum featuring 1.97 Carats of Natural Rubies and 0.992 Carats Diamonds
Category

21st Century and Contemporary Japanese Modern Band Rings

Materials

Diamond, Ruby, Platinum

1.80 Carat Natural Ruby and Diamond Half-Eternity Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring made in Platinum featuring 1.80 Carats of Natural Rubies and 0.996 Carats Diamonds
Category

21st Century and Contemporary Japanese Modern Band Rings

Materials

Diamond, Ruby, Platinum

Vintage Retro Platinum Hammerman Brothers Diamond Half Eternity Band Ring
By Hammerman Brothers
Located in Great Neck, NY
: Platinum Weight: 2.7 Grams Total Diamond Weight: 0.30 CTS Diamond Color: H Diamond Clarity: VS2 Ring
Category

Vintage 1950s Retro Wedding Rings

Materials

Diamond, Platinum

English .45 Ct F VVS Baguette Diamond Platinum Half Eternity Ring
Located in Napoli, IT
This extra fine traditional half eternity ring is English origin boasting excellent workmanship in
Category

2010s English Contemporary Engagement Rings

Materials

Diamond, Platinum

Art Deco Style Diamond Platinum Half Eternity Band
Located in Beverly Hills, CA
: 5.22 This elegant modern half eternity band, inspired by the timeless Art Deco style, is crafted in
Category

Vintage 1920s Art Deco Wedding Rings

Materials

Diamond, Platinum

Hancocks 2.76ct Old European Brilliant Cut Diamond Half Eternity Ring Platinum
By Hancocks
Located in London, GB
A beautiful diamond half eternity ring set with old European brilliant cut diamonds weighing a
Category

21st Century and Contemporary English Band Rings

Materials

Diamond, Platinum

Elegant 0.80ct Half Eternity Ring set in gleaming Platinum
Located in רמת גן, IL
a symbol of love or a token of self-expression, the Elegant 0.80ct Half Eternity Ring is sure to
Category

2010s Singaporean Band Rings

Materials

Diamond, Platinum

Antique Platinum Textured Half Eternity Diamond Wedding Band
Located in Houston, TX
Gender: Ladies Metal Type: Platinum Ring Size: 6  Width: 2.50 mm Weight: 2.13 grams One ladies
Category

Early 20th Century Unknown Wedding Rings

Materials

Diamond, Platinum

Cartier Diamond Half-Eternity Ring Size (49)
By Cartier
Located in London, GB
Here we have a classically styled diamond half-eternity ring from the world renowned luxury
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Platinum

Square Emerald and Diamond Channel Half Eternity Band in Platinum 950
Located in Bangkok, TH
Fabulous square emeralds and dazzling diamonds alternatively adorn this channel set half eternity
Category

21st Century and Contemporary Thai Art Deco Band Rings

Materials

Diamond, Emerald, Platinum

Tiffany & Co. Forever Diamond Half Eternity Band Ring
Located in London, GB
Here we have a wonderful seven-stone diamond ring from the world renowned jewellery designer
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Cartier Diamond Half-Eternity Ring Size K (50)
By Cartier
Located in London, GB
Here we have a classically styled diamond half-eternity ring from the world renowned luxury
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Platinum

East West Oval Half Yellow and White Diamond Eternity Ring
By Rare Colors
Located in New York, NY
This stunning half and half east-west eternity band offers two diamond looks in one effortlessly
Category

2010s Band Rings

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

David Morris Pavé Set Diamond Half Eternity Ring
By David Morris
Located in London, GB
Featuring from the David Morris collection, this half eternity ring is pave set with dazzling
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Platinum

1.03 Carat Round-Cut Diamond in Platinum 900 Channel Setting Half-Eternity Ring
Located in Miami, FL
1.03 Carat Round-Cut Natural Diamond in Platinum 900 Channel Set Band Ring. Details: Item Type
Category

21st Century and Contemporary Modern Wedding Rings

Materials

Diamond, Platinum

Vintage Boodles Half Eternity Ring -alternate princess cut and baguette diamonds
By Boodles
Located in London, GB
Vintage Boodles Half Eternity Ring in Platinum This elegant vintage half eternity ring by Boodles
Category

Early 2000s English Contemporary Bridal Rings

Materials

Diamond, Platinum

Vintage Diamond and 9 Carat White Gold Half Eternity Ring
Located in Chipping Campden, GB
The diamonds in this ring total approximately 50pts and are princess cut which give such a
Category

Vintage 1960s British Modern Band Rings

Materials

Diamond, Platinum

Very Rare 0.18 Carat Natural Hauyne & Diamond Half Eternity Ring Set in Platinum
Located in Tokyo, JP
A stunning eternity Ring featuring a 0.18 Carat Hauynite/Hauyne and 0.24 Carats of Diamond Accents
Category

21st Century and Contemporary Japanese Modern Band Rings

Materials

Other, Diamond, Platinum

Floating Eternity Band Half-way Diamond Ring
Located in Los Angeles, CA
This lovely Diamond Halfway Eternity Ring features a set of Round Cut Natural Diamonds in Floating
Category

2010s American Modern Band Rings

Materials

Platinum, Yellow Gold, White Gold, Rose Gold, 18k Gold, 14k Gold

Vintage Platinum Five Single Cut Diamond Half Eternity Wedding Band
Located in Houston, TX
custom made platinum five-across, diamond vintage wedding band with a half-round shank. The metal was
Category

Late 20th Century Unknown Wedding Rings

Materials

Diamond, Platinum

Art Deco Half-Eternity Diamond Ring Size L (52)
Located in London, GB
Here we have a gorgeous half-eternity diamond ring taken from a time when the Art Deco style was
Category

20th Century Art Deco Fashion Rings

Materials

Diamond, Platinum

Platinum 1.00 Carat Round Brilliant Cut Diamond Half Eternity Wedding Band
Located in Chicago, IL
Timeless and refined, this platinum half-eternity band features nine natural round brilliant cut
Category

2010s American Contemporary Band Rings

Materials

Diamond, Platinum

5.0 Ctw. Oval Cut Diamond Half Eternity Band in 18K Yellow Gold and Platinum
Located in San Francisco, CA
Oval Cut Diamond Half Eternity Band set in 18K Yellow Gold and Platinum. This half eternity band
Category

2010s American Band Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Platinum Diamond Set Eternity/Wedding Ring with 7 Diamonds
Located in London, GB
This Platinum Diamond half eternity band is set with 7 round brilliant cut Diamonds, in total
Category

2010s British Wedding Rings

Materials

Diamond, Platinum

1.50 Carat Princess Cut Diamond Eternity Band Bezel Set Platinum Half Band
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Timeless diamond eternity band / wedding ring, half band. By Alexander Beverly Hills. 1.50ct of
Category

21st Century and Contemporary American Contemporary Band Rings

Materials

Diamond, Platinum

Tiffany & Co Platinum Half Circle Eternity Band Ring .17ct 2 mm Size 6
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. half-circle wedding band ring from the Tiffany setting collection finely crafted in
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Solitaire Engagement Ring 6-prong Half-eternity
Located in Los Angeles, CA
This gorgeous Diamond Engagement Ring features Round Cut Diamond in 6-Prong Setting accompanied by
Category

2010s American Modern Engagement Rings

Materials

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

Vintage 0.50ct Diamond Half Eternity Band, c.1963
Located in London, GB
half eternity band. Weighing 0.05 carat a piece, the diamonds match in quality with colour of F and
Category

Vintage 1960s British Wedding Rings

Materials

Diamond, Platinum

Tiffany & Co. Soleste Half Eternity Band in Platinum 0.17 CTW
By Tiffany & Co.
Located in New York, NY
: Platinum Metal Purity: 950 Ring Size: 4.5 Pre-Owned Jewelry Condition: Excellent SIDE STONE INFORMATION
Category

21st Century and Contemporary Band Rings

Materials

Platinum

18K Yellow Gold Diamond Half Eternity Band Wedding Stacking Fashion Ring
Located in Wan Chai District, HK
This exquisite 18K yellow gold diamond half eternity band is the perfect choice for your special
Category

21st Century and Contemporary Hong Kong Contemporary Band Rings

Materials

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

0.72 Carat Platinum Eternity Unisex Princess Cut Diamond Ring
Located in San Francisco, CA
This Platinum handcrafted eternity unisex band showcases eight (8) perfectly matched Princess cut
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Diamond Half Eternity Ring Pattern Ring Band in 18k Yellow Gold
Located in Hong Kong, HK
Product Specifications: Type: Round Brilliant Diamond High quality Diamond: D-F in color and VS
Category

2010s Hong Kong Modern Wedding Rings

Materials

Diamond, 18k Gold, Yellow Gold

0.23ct Round Brilliant Diamond and Sapphire Eternity Band, Platinum
Located in New York, NY
This exquisite half-eternity band is expertly crafted in luxurious platinum, offering both timeless
Category

21st Century and Contemporary Unknown Art Deco Band Rings

Materials

Diamond, Sapphire, Platinum

18K White Gold Diamond Curvy Channel Set Half Eternity Band Wedding Ring
Located in Wan Chai District, HK
This beautiful 18k white gold diamond curvy channel set half eternity band wedding ring is the
Category

21st Century and Contemporary Hong Kong Contemporary Wedding Rings

Materials

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

OSCAR HEYMAN Half Eternity Ring In 18Kt Yellow Gold Diamonds & Rubies
By Oscar Heyman
Located in Miami, FL
Half eternity ring designed by the Oscar Heyman Brothers. This is a gorgeous half eternity ring
Category

Vintage 1970s American Modernist Band Rings

Materials

White Diamond, Ruby, Diamond, 18k Gold, Yellow Gold, Gold

Half Eternity Pavé Blue Sapphire and Diamond Wedding Band Ring in Yellow Gold
Located in Hong Kong, HK
. Total Carat Weight: 0.70 ct Number of Diamond: 7 Precious Metal: 18K yellow gold Ring Width: 3.2mm
Category

2010s Hong Kong Modern Wedding Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Yellow Gold

0.90 Carat Total Round Diamond Semi-Eternity Band Ring in Platinum
Located in Scottsdale, AZ
Ring Size: 6.75 Introducing an exquisite channel set round diamond semi-eternity band ring – a
Category

21st Century and Contemporary Unknown Contemporary Band Rings

Materials

Diamond, Platinum

Tiffany & Co. Channel Set Semi Eternity Diamond Wedding Band Ring Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 5 Stunning Tiffany & Co. diamond semi eternity band ring. This timeless beauty features
Category

21st Century and Contemporary Unknown Contemporary Band Rings

Materials

Diamond, Platinum

  • 1
Get Updated with New Arrivals
Save "Diamond And Platinum Half Eternity Ring", and we’ll notify you when there are new listings in this category.

Diamond And Platinum Half Eternity Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate diamond and platinum half eternity ring for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from gold, platinum and 18k gold — can elevate any look. You can easily find a 133 antique edition and 284 modern creations to choose from as well. Finding the perfect diamond and platinum half eternity 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. Finding an appealing diamond and platinum half eternity ring — no matter the origin — is easy, but Tiffany & Co., OGI Ltd and Roman Malakov each produced a popular version that is worth a look. 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 brilliant cut and baguette cut alternatives. If you’re browsing our inventory for a diamond and platinum half eternity 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 Diamond And Platinum Half Eternity Ring?

The price for a diamond and platinum half eternity ring starts at $136 and tops out at $290,000 with these rings, on average, selling for $2,526.

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.