Skip to main content

Three Stone Ruby Ring Cushion

to
16
150
59
156
58
49
25
22
21
15
11
6
6
6
6
5
4
4
4
3
3
3
2
1
1
1
1
1
1
21
17
8
6
4
Sort By
3.81 Carat Ruby Cushion Three Stone Ring Marquise Diamonds
Located in New York, NY
Ruby Weight: 3.81 CTS Diamond Weight: 0.78 CT Metal: Platinum Ring Size: 7 Shape: Cushion Color
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Ruby, Platinum

2.58 Carat Cushion Cut Ruby and Diamond Three-Stone Engagement Ring
Located in London, GB
This beautiful three stone ring features a rich red cushion cut ruby weighing 2.58ct in a four claw
Category

2010s English Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Certified 3.07 Carat Cushion Cut Ruby and Diamond Three-Stone Engagement Ring
Located in NEW YORK, NY
Showcasing Certified Cushion cut, Vibrant color Ruby weighing 3.07 carats, flanked by two brilliant
Category

21st Century and Contemporary Modern Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Three Stone Ruby & Diamond Ring
Located in New York, NY
Three Stone Ruby & Diamonds Ring Cushion Cut Ruby 3.25 Carats Surrounded by 2 Triangle Cut
Category

Vintage 1980s American Three-Stone Rings

Materials

Diamond, Ruby

3.52 Carat Elongated Cushion Cut Ruby and Diamond Three Stone Ring in Platinum
Located in NEW YORK, NY
This three-stone ring is set with a 3.52-carat cushion cut ruby center stone flanked with 2
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Vintage Burmese Ruby and Diamond Three-Stone Ring
Located in London, GB
Here we have a truly breath taking ruby and diamond three-stone ring. The focal point of this piece
Category

20th Century Three-Stone Rings

Materials

Diamond, Ruby, Gold, Yellow Gold

Sophia D. Ruby and Diamond Three Stone Platinum Ring
By Sophia D
Located in New York, NY
A three stone ring with 0.92 carat cushion cut center ruby flanked with 1.03 carat pear shaped
Category

2010s Art Deco Three-Stone Rings

Materials

Diamond, Ruby, Platinum

GIA Burma Ruby and Diamond Three Stone Cocktail Ring
Located in Beverly Hills, CA
patterns, this 6.15-carat Burma Ruby three-stone ring is a beautiful work of art from the 1940s- 1950's
Category

Vintage 1940s Burmese Retro Three-Stone Rings

Materials

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

Pigeon's blood Burmese Ruby and Diamond Three-Stone Ring, circa 1900
Located in London, GB
Pigeon's blood Burmese ruby & diamond three stone ring. Set to centre with a cushion shape old cut
Category

Antique Early 1900s Unknown Victorian Three-Stone Rings

Materials

Diamond, Ruby, Yellow Gold

GIA Certified, 4.38 Carat Burma No Heat Ruby Three-Stone Ring
Located in Beverly Hills, CA
This hand made three stone ruby and diamond ring is mounted in platinum. The ruby measures 4.38
Category

2010s Unknown Modern Three-Stone Rings

Materials

Ruby, White Diamond, Diamond, Platinum

Natural Burmese Ruby Diamond Three-Stone Ring, circa 1910
Located in London, GB
Burmese ruby and diamond three stone ring. Set to centre with a cushion shape old cut natural
Category

Antique Early 1900s British Edwardian Three-Stone Rings

Materials

Diamond, Ruby, Platinum

3.52 Carat Antique Cushion Unheated Burma Ruby and Diamond 3-Stone Platinum Ring
Located in Boston, MA
This red cushion cut cut ruby is custom set in an antique one-of-kind diamond and platinum ring
Category

Antique Mid-19th Century Unknown Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Shreve, Crump & Low 9.13 Carat Red Cushion Cut Ruby and Diamond 3-Stone Ring
By Shreve, Crump & Low
Located in Boston, MA
This ruby and diamond 3-stone ring is offered by Shreve, Crump & Low. This cushion cut ruby is
Category

2010s American Three-Stone Rings

Materials

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

Gems Are Forever Three Stone GIA Certified 3.02 ct. Natural Ruby Ring 18k Gold
By Gems Are Forever
Located in beverly hills, CA
and white gold ring is centered with GIA certified 3.02 ct cushion cut no heat ruby accented with two
Category

21st Century and Contemporary Three-Stone Rings

Materials

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

Victorian .70 Ct Old Mine Diamond Ruby Sapphire Three Stone ring 18 KT
Located in Napoli, IT
Victorian Three Stone This classy Victorian statement is suitable for him her Charming
Category

Antique 1870s European Victorian Three-Stone Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold

4.11 carat cushion-cut, untreated Mozambique Ruby ring. AGL certified.
Located in Los Angeles, CA
Few come finer than this ravishing ruby and diamond ring, exquisitely crafted in platinum with 18K
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Platinum

BENJAMIN FINE JEWELRY 4.87 cts Cushion Ruby with Diamond 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
: GRS Product Reference : RR-23052 A three-stone ruby ring with diamonds is a stunning piece of jewelry
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

5.03 Carat Natural Cushion Ruby And White Round Old Cut Diamond Ring In 18K.
By MOGULDIAM INC
Located in New York, NY
This understated, elegant and enticing three stone ring designed and manufactured by Moguldiam Inc
Category

Early 2000s British Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

Emilio Jewelry Untreated Ruby Ring
By Emilio!
Located in New York, NY
iconic Fifth Avenue. Certified Center stone just over 4.65ct Mozambique No Heat pigeon blood high
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

GIA Certified 4.00 Carat Pigeon's Blood Burmese Ruby and Diamond 3-Stone Ring
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Los Angeles. Burmese ruby cushion, 9.05 x 8.02 x 5.90mm, 4.00 carats Asscher cut diamonds, .90 carat
Category

21st Century and Contemporary American Artisan Three-Stone Rings

Materials

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

A.G.L. Burma Ruby and Diamond Thee-Stone Ring, by Pampillonia
By Pampillonia
Located in Bethesda, MD
From the master ring makers of Pampillonia jewelers a vivid red square cut ruby and diamond
Category

2010s American Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

Round Ruby 1.26ct Gia Round & Cushion Diamonds 0.78ct in 18k White Diamond Ring
Located in New York, NY
-certified red ruby gemstone weighing 1.26 carats and surrounded by two gorgeous white cushion diamonds. The
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

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

Emilio Jewelry Certified Burma No Heat Ruby Ring
By Emilio!
Located in New York, NY
pieces to your exact wishes. Emilio Jewelry is proud to be rated a 5 star dealer. Main stone: 6.50
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry Certified 8.00 Carat Ruby Diamond Ring
By Emilio!
Located in New York, NY
From the museum vault at Emilio Jewelry New York, A magnificent Mozambique ruby sits in the center
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Ruby

Green Beryl Ring Cushion 3.91 Carat
By Merkaba
Located in Beverly Hills, CA
Sea-foam 3.91 carat Green Beryl cushion, three-stone platinum ring, decorated with a pair of 0.50
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Multi-gemstone, Beryl, Green Beryl, Platinum

Emilio Jewelry Certified 7.00 Carat Natural Pigeons Blood Ruby Ring
By Emilio!
Located in New York, NY
Main stone: 7.03 carats Color: Vivid Red (PIGEON BLOOD) Shape: CUSHION Setting: 39 white diamonds
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry Certified 7.89 Carat Untreated Burma Ruby Ring
By Emilio!
Located in New York, NY
From Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, GRS certified as vivid red pigeons blood. No Heat and untreated. Burma M...
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry Certified 5.50 Carat No Heat Mozambique Ruby Ring
By Emilio!
Located in New York, NY
Showcasing a certified no heat Mozambique Ruby weighing 4 carats, of gorgeous rich red color. This
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry Certified 7.00 Carat Vivid Red Ruby Ring
By Emilio!
Located in New York, NY
magnificent pigeons blood Mozambique ruby set in The center. The center itself is just over 6 carats and is
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby, Platinum

Emilio Jewelry Certified 15.00 Carat Untreated No Heat Ruby Ring
By Emilio!
Located in New York, NY
Fifth Avenue, Featuring an exceptional ruby weighing over 15 carats! Origin: Mozambique Color
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Vintage 1.70 carat Ruby and Diamond Trilogy Ring, c.1950s
Located in London, GB
round brilliant diamonds. Sitting proudly, the central blood red Ruby is a cushion cut stone, completely
Category

Vintage 1950s Unknown Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

Emilio Jewelry GRS Certified 5.00 Carat Untreated Pigeons Blood Ruby Ring
By Emilio!
Located in New York, NY
vivid red-pigeons blood clean ruby set in the center. The side stones are sapphires totaling 5.00cts in
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Art Deco Burmese 2.08 carat ruby diamond ring
Located in London, GB
Art Deco Burmese ruby and diamond ring. Set with a cushion shape step cut natural unenhanced
Category

Vintage 1920s British Art Deco Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry Certified 5 Carat No Heat Vivid Red Ruby Ring
By Emilio!
Located in New York, NY
From the Museum Vault At Emilio Jewelry New York, Center Stone: Grs certified as pigeons blood no
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Edwardian 1.70ct Ruby and Diamond Trilogy Ring, c.1910s
Located in London, GB
Edwardian trilogy ring. The vibrant ruby is an old cushion cut stone and weighs 1.70 carat. The old cut
Category

Vintage 1910s Unknown Edwardian Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

18 Karat Gold Ladies Ring with Natural Burma Ruby and Diamonds
Located in Braintree, GB
18kt gold ladies ring with natural Burma ruby and diamonds Ring shank tested positive for 18kt gold
Category

Vintage 1960s Three-Stone Rings

Materials

Diamond, Ruby, Gold

Emilio Jewelry Grs Certified 8.00 Carat Vivid Red No Heat Ruby Ring
By Emilio!
Located in New York, NY
carats The pure Mozambique natural no-burn ruby ​​diamond ring, so pure and intense, is a coveted gem.
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry 3.50 Carat Certified Vivid Red Pigeons Blood Ruby Ring
By Emilio!
Located in New York, NY
From The Vault At Emilio Jewelry New York, A gorgeous breathtaking elongated ruby certified by
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Edwardian GIA Burma No Heat Ruby & Diamond Filigree Ring
Located in Boston, MA
An Edwardian period No Heat Burmese Ruby, and diamond ring in platinum. Centered by a bezel set
Category

Antique Early 1900s American Edwardian Three-Stone Rings

Materials

Diamond, Ruby, Platinum

BENJAMIN FINE JEWELRY 5.01 cts Ruby with Diamond 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
Origin : Mozambique Certificate : AIGS / GIA Product Reference : RR-23050 A three-stone ruby ring with
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Gold, Diamond, Ruby and Sapphire Ring
Located in New York, NY
18 kt., one oval diamond ap. .50 ct., one oval ruby & one cushion-shaped sapphire ap. 1.50 cts., no
Category

Antique Late 19th Century Three-Stone Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold

BENJAMIN FINE JEWELRY 5.39 cts Ruby with Diamond 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
creations span from diamonds and emeralds to rubies and sapphires. 5.39 cts Ruby with Diamond 18K Ring 18K
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Gubelin Certified 1.74 Carat No-Heat Burmese Pigeon Blood Ruby and Diamond Ring
Located in New York, NY
exquisite 1.74 carat Burmese Cushion Shaped Ruby Ring, a testament to the rarity and allure of Pigeon's
Category

2010s Burmese Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

BENJAMIN FINE JEWELRY 5.62 cts Unheated Ruby with Diamond 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
Ring 18K, White Gold Ruby : 5.62 cts Side Stones : Cushion Diamond 3.51 / 3.50 cts White Diamond Pavé
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Diamond, Ruby, White Gold, 18k Gold

Gubelin Certified 1.72 Carat No-Heat Burmese Pigeon Blood Ruby and Diamond Ring
Located in New York, NY
Burmese Cushion Shaped Ruby Ring, embodying boldness and allure. The center ruby, with its coveted
Category

2010s Burmese Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

BENJAMIN FINE JEWELRY 1.67 / 1.59 cts Unheated Burmese Ruby 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
18K Ring 18K, White Gold Ruby : 1.67 / 1.59 cts White Emerald Cut Diamond : 2.16 cts White Diamond
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Ruby, 18k Gold, White Gold

Gorgeous Platinum Ring with Vivid Red 5.53 Ct Ruby & 1.5 Ct Heart Shape Diamond
Located in Antwerp, BE
Gorgeous Platinum Ring With Vivid Red 5.53 Ct Ruby and 1.5 Ct Heart shaped Diamond Ruby: Vivid Red
Category

21st Century and Contemporary Belgian Artisan Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Tourmaline Ruby Sapphire Diamond Ring 14k Gold 5.1 TCW GIA Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Tourmaline Ruby Sapphire Diamond Ring 14k Gold 5.1 TCW GIA Certified
Category

2010s American Three-Stone Rings

Materials

Diamond, Ruby, Sapphire, Tourmaline, 14k Gold, White Gold

BENJAMIN FINE JEWELRY 1.41 cts Trio Cushion Emerald 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
creations span from diamonds and emeralds to rubies and sapphires. 1.41 cts Trio Cushion Emerald 18K Ring
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Emerald, 18k Gold, White Gold

Burmese Ruby and diamond cluster ring, circa 1890.
Located in London, GB
Burmese Ruby and diamond cluster ring. Set to centre with one cushion shape old cut natural
Category

Antique Late 19th Century Three-Stone Rings

Materials

Diamond, Ruby, Gold

Sophia D, GIA Certified 2.06 Carat Ruby and 0.68 Carat Diamond Ring in Platinum
By Sophia D
Located in New York, NY
GIA certified 2.06 carat Ruby stone with two 0.68 carat Diamonds on the side, smaller diamonds at
Category

2010s Art Deco Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Andreoli 7.37 Carat Burma Ruby Diamond 18 Karat White Gold Ring CDC Certified
By Andreoli
Located in New York, NY
Andreoli 7.37 Carat Burma Ruby Diamond 18 Karat White Gold Ring This ring features: - 0.40 Carat
Category

2010s Italian Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

BENJAMIN FINE JEWELRY 5.37 cts Siam Ruby with Pie Cut Diamond 18K Ring
By Benjamin Fine Jewelry
Located in New York, NY
Origin : Siam Certificate : GIA Product Reference : RR-23007 A three-stone ruby ring with diamonds is a
Category

21st Century and Contemporary Thai Modern Three-Stone Rings

Materials

Ruby, Diamond, 18k Gold, White Gold

AGL Certified 1.76 Carat Pigeon's Blood Red No Heat CLASSIC Burma Ruby Ring
By Gad & Co.
Located in Miami, FL
AGL Certified 1.76 Carat Cushion Cut Pigeon's Blood Red No Heat Burma Ruby & Diamond Ring in 18k
Category

20th Century Burmese Art Deco Three-Stone Rings

Materials

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

Emilio Jewelry GRS Certified 7.00 Carat Untreated Ruby
By Emilio!
Located in New York, NY
similar Rubies which are far less pricey, however this stone is hard to come by. Featuring a super Gem one
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Natural Pigeon Blood Burma 1.84 Carat Ruby Ring
Located in London, GB
Pigeon blood Burmese ruby and diamond engagement ring. Centrally set with a cushion shape old cut
Category

Vintage 1930s British Art Deco Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry Certified 8.80 Carat Burma No Heat Ruby
By Emilio!
Located in New York, NY
Fifth Avenue, Main Stone: 7.60 carats Red OVAL" Matching: white diamonds totaling about 1.21 carats
Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby, Platinum

Cober with a Ruby of 1.12 Carat and two diamonds of 0.15 Carat Yellow Gold Ring
By Vincent Cober
Located in OSS, NH
true masterpiece. With a ruby of 1.12 ct. and two diamonds of 0.15 ct. each, this ring is a unique
Category

2010s Dutch Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18 kt. White Gold Trilogy Ring 2.2 ct. Vivid Red Siam Ruby & 1.73 ct. Diamonds
Located in Antwerp, BE
Magnificant 18 kt. White Gold Trilogy Ring with 2.2 ct. Vivid Red Ruby & 1.73 ct. Diamonds Ruby
Category

20th Century European Artisan Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Certified 2.31 Carat No Heat Ruby & 1 Carat F-G VS1-2 Diamond 18 Karat Gold Ring
Located in Southampton, GB
. Material: 18ct Yellow & White Gold Ring Size: L Total Ring Weight: 4.8g Ruby Weight: 2.31ct Ruby Shape
Category

21st Century and Contemporary British Three-Stone Rings

Materials

Diamond, Ruby, Gold

  • 1
Get Updated with New Arrivals
Save "Three Stone Ruby Ring Cushion", and we’ll notify you when there are new listings in this category.

Three Stone Ruby Ring Cushion For Sale on 1stDibs

On 1stDibs, you can find the most appropriate three stone ruby ring cushion for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect three stone ruby ring cushion may mean sifting through those created during different time periods — you can find an early version that dates to the 18th Century and a newer variation that were made as recently as the 21st Century. A three stone ruby ring cushion from Emilio!, Brij Nivesh and Gubelin — each of whom created a beautiful version of this treasured accessory — is worth considering. A cushion cut version of this piece has appeal, but there are also antique cushion cut and emerald cut versions for sale. Most of our three stone ruby ring cushion for sale are for women, but there are 29 pieces available to browse for men.

How Much is a Three Stone Ruby Ring Cushion?

Prices for a three stone ruby ring cushion can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $773 and can go as high as $960,000, while this accessory, on average, fetches $21,969.

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.