Tiffany & Co. Platinum Soleste 2 Carat Diamond Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Platinum Soleste 2 Carat Diamond Ring An exquisite Tiffany & Co.
Diamond, White Diamond, Platinum
$64,000Sale Price|20% Off
Tiffany & Co. 2 Carat Soleste Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
This elegant Tiffany & Co. Soleste engagement ring showcases a magnificent 1.81 carat round brilliant cut center diamond, expertly set in platinum. The center stone is graded F c...
Diamond, White Diamond, Platinum
Tiffany & Co. 2 Carat Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Original Pre-Owned Engagement Ring with GIA and Tiffany Certificates Description A true design masterpiece, the Tiffany® Setting remains the world’s most iconic en...
Diamond, White Diamond, Platinum
$68,000Sale Price|20% Off
Tiffany & Co. Certified 2 Carat Round Brilliant Diamond Platinum Ring
By Tiffany & Co.
Located in Chicago, IL
An authentic Tiffany & Co. engagement ring featuring a certified natural round brilliant center diamond weighing 2 carats, graded I color and VS1 clarity.
Diamond, White Diamond, Platinum
$48,000Sale Price|20% Off
Tiffany & Co. 2 Carat Soleste Round Brilliant Cut Diamond Solitaire Ring
By Tiffany & Co.
Located in Chicago, IL
Exquisite symbol of everlasting love: The Tiffany & Co. Platinum Halo Engagement Ring featuring a breathtaking 2.27 ct Round Diamond. Crafted with precision and elegance, this r...
Diamond, White Diamond, Platinum
Certified Tiffany & Co. 2 Carat G VVS2 Oval Brilliant Diamond Platinum Ring
By Tiffany & Co.
Located in Chicago, IL
This certified Tiffany & Co. platinum ring features a stunning 2 carat oval brilliant diamond, combining elegant proportions with exceptional brilliance.
Diamond, White Diamond, Platinum
Tiffany & Co. 1.05 Carat Diamond Engagement Ring
By Tiffany & Co.
Located in London, GB
Condition: Used (Very Good) Weight: 4.4 grams Ring Size: J 1/2 (50) Diamond Weight: 1.01ct Details: Approx.
Diamond, Platinum
Tiffany & Co. Platinum 0.50 Carat VS-2 G Color Flower Diamond Ring
By Tiffany & Co.
Located in New York, NY
Tiffany & Co Ring Condition: Mint Diamond Information Weight: 0.50 Carat Total.
Diamond, Platinum
Tiffany & Co. 0.19 Carat Diamond Solitaire Ring
By Tiffany & Co.
Located in London, GB
Here we have a delightful solitaire diamond ring from the world renowned jewellery designer, Tiffany & Co. This elegant piece has been crafted from platinum and features a single rou...
Diamond, Platinum
Tiffany & Co. 4.95 Carat Rubellite 2.05 Carat Diamond Ring
By Tiffany & Co.
Located in Dallas, TX
A Tiffany Stunner! This ring features a lovely 4.95 carat rubellite and 2.05 carats of diamonds that are stated to be VS 1 - VS 2 in clarity and G - H in color.
Diamond, White Diamond, Rubelite, 18k Gold, Yellow Gold
Tiffany & Co 0.45 Carat Diamond Solitaire Ring
By Tiffany & Co.
Located in London, GB
This classic Tiffany & Co engagement ring features a 0.45 carat round brilliant diamond.
Diamond, Platinum
Tiffany & Co. 1.52 Carat Cushion Cut Diamond Platinum Solitaire Ring
By Tiffany & Co.
Located in Chicago, IL
Details Brand: Tiffany & Co. Style: Solitaire engagement ring Metal: Platinum PT950 Center Diamond: Round Brilliant, 1.52 ct (stamped) Color / Clarity: F / VVS1 Origin Note: Cana...
Diamond, White Diamond, Platinum
Mid Century 1950 Tiffany & Co GIA Flawless 2 Carat Old Mine Cut Diamond Ring
By Tiffany & Co.
Located in Santa Barbara, CA
Prepare to fall in love with this Tiffany & Co. Internally Flawless diamond engagement ring. An antique 2.03 carat old mine cut, hand-faceted with the broad facets, high crown, large...
Diamond, Gold, 18k Gold, Yellow Gold
Tiffany & Company Schlumberger Platinum Gold and Diamond 2 Leaves Ring
By Tiffany & Co.
Located in Chicago, IL
Circa 2015 Tiffany & Company Jean Schlumberger Studios for Tiffany & Company 18k Yellow Gold 2 Leaves Ring, The Platinum Leaves on the Ring top measure 1/2 inch across and are set wi...
Diamond, Gold, 18k Gold, Platinum
Tiffany & Co. 0.30 Carat Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in London, GB
A Tiffany & Co. icon, set in the jeweller’s time-honoured, six claw, knife-edge setting with a lively 0.30 carat round brilliant cut diamond.
Diamond, Platinum
Tiffany & Co Platinum Engagement Ring 0.77 Carat Diamonds & 1.76 Carat Tanzanite
By Tiffany & Co.
Located in New York, NY
Style: Engagement Metal: Platinum Gemstone 1: 1.76 Carat Tanzanite Number of Stones: 1 Shape: Pear Shape Gemstone 2: 0.77 Carat Diamond Number of Stones: 72 Color: F Clarity: VS Shap...
Diamond, Tanzanite, Platinum
Tiffany & Co. 0.55 Carat Lucida Diamond Half-Eternity Ring
By Tiffany & Co.
Located in London, GB
Condition: Used (Excellent) - Professionally polished to appear brand new Weight: 5.8 grams Band Width: 4mm - 3mm (front - back) Ring Size: K 1/2 (50.5) - Resizable Total Diamond Car...
Diamond, Platinum
Tiffany & Co. Platinum 2.26 Carat Emerald-Cut Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Platinum 2.26 Carat Emerald-Cut Diamond Engagement Ring A classic Tiffany & Co. engagement ring crafted in platinum and set with a bright 2.26 carat emerald-cu...
Diamond, White Diamond, Platinum
Tiffany & Co. GIA 3.60 Carat Colombian Emerald Diamond Platinum Cocktail Ring
By Tiffany & Co.
Located in Stamford, CT
Experience the opulent allure of our original early 1900s Tiffany & Co Emerald and diamond Art Deco platinum cocktail ring. This radiant creation showcases a mesmerizing 3.60ct high ...
Diamond, Emerald, Platinum
0.49 Carat Tiffany & Co Lucida Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in London, GB
A 0.49 Carat Tiffany & Co Lucida diamond platinum engagement ring.
Diamond, Platinum
Tiffany & Co., 3.08 Carat Round Brilliant Cut Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Diamond cut: Round Brilliant Carat: 3.08 carats Color: F Clarity: VVS2 Cut: Excellent Polish: Excellent Symmetry: Excellent Metal: Platinum Ring size: 5 1/2 Stamp: TIFFANY&CO.
Diamond, Platinum
Tiffany & Co. Lucida Diamond 3mm Band Ring
By Tiffany & Co.
Located in London, GB
This sleek and stylish ring features a single 0.06 carat Lucida cut (now discontinued) diamond, Tiffany's very own iconic patented diamond cut.
Diamond, Platinum
Tiffany & Co., 3.15 Carat Round Brilliant Cut Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Diamond cut: Round Brilliant Carat: 3.15 carats Color: I Clarity: VVS2 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: Medium Blue Metal: Platinum Ring size: 5 1...
Diamond, Platinum
Tiffany & Co Platinum Ring Round Diamond 2, 29 ct D/IF
By Tiffany & Co.
Located in Berlin, DE
Tiffany & Co. Platinum Ring This exquisite ring from Tiffany & Co. is crafted from 950 platinum, offering exceptional durability and a brilliant white luster that perfectly compleme...
Tiffany & Co. Round Brilliant Diamond and Platinum Wedding Band Ring 2 MM
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Style: Half Circle Diamond Wedding Band Sku Number: 16183334 Size: 6- sizable Metal: Platinum PT950 Total Carat Weight: 0.22 Cts. Diamond Shape: Round Brilliant D...
Diamond, Platinum
Tiffany & Co., 5.26 Carat Oval Brilliant Cut Diamond "Novo" Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
X07061036 on crown Side Diamonds Carat: 0.16 carat total Color: D-G Clarity: IF-VS2 Metal: Platinum Ring size: 5 1/2 Stamp: TIFFANY&CO.
Diamond, Platinum
Tiffany & Co. Platinum Diamond & Green Emerald Contour Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Platinum Diamond & Green Emerald Contour Ring Elegant Tiffany & Co.
Diamond, White Diamond, Emerald, Platinum
Tiffany & Co. 0.28ct Diamond Solitaire Ring
By Tiffany & Co.
Located in London, GB
Taking centre stage in this wonderful Tiffany & Co solitaire engagement ring is a 0.28 carat princess cut diamond.
Diamond, Platinum
Tiffany & Co. 0.74ct Diamond Solitaire Ring
By Tiffany & Co.
Located in London, GB
This iconic knife edge solitaire from Tiffany & Co. features a stunning 0.74 carat round brilliant diamond at its heart.
Diamond, Platinum
Tiffany & Co. 0.91ct Diamond Halo Ring
By Tiffany & Co.
Located in London, GB
From Tiffany & Co.’s Legacy collection, this elegant Diamond Halo Engagement Ring showcases a stunning 0.91 carat cushion modified brilliant cut diamond at it’s centre.
Diamond, Platinum
Tiffany & Co. Diamond Platinum Forever Half Diamond Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. Diamond Platinum Forever Half Diamond Ring Product Details Xupes Ref: J1705 Brand: Tiffany & Co.
Diamond, Platinum
Tiffany & Co. 1.00 Carat Tanzanite and Diamond Three-Stone Ring
By Tiffany & Co.
Located in Santa Monica, CA
Set in platinum, this ring embodies timeless luxury. - Center Stone: 1.00 carat round tanzanite - Side Diamonds: 2 round brilliant cut diamonds, 0.80cttw, VS1, G - Metal: Platinum -...
Diamond, Tanzanite, Platinum
$3,899Sale Price|28% Off
Tiffany & Co Diamond Engagement Ring 0.32ct
By Tiffany & Co.
Located in SYDNEY, NSW
Tiffany & Co grading report 26057892/K10010137, crown laser inscribed:-Weight: 0.32ct Colour: F, Clarity: VVS1 Metal: Platinum PT950 Carat: 0.32ct Colour: F Clarity: VVS1 Cut: Round...
Diamond, Platinum
Tiffany & Co Platinum Halo Ring with 2.65 Carat Cushion Round Diamonds Size 4
By Tiffany & Co.
Located in New York, NY
Style: Halo Metal: Platinum Gemstone 1: 1.65 Carat Diamond Number of Stones: 1 Color: G Clarity: VVS1 Shape: Cushion Brilliant Gemstone 2: 1 Carat Diamond Number of Stones: 42 Color:...
Diamond, Platinum
Tiffany & Co 0.22ct Diamond ‘Etoile’ Ring
By Tiffany & Co.
Located in London, GB
The ring is crafted in 18 carat yellow gold with a collection of round brilliant diamonds, rub over set into platinum across its length.
Diamond, Platinum, 18k Gold, Yellow Gold
Tiffany & Co. 5.74 carat emerald cut diamond platinum three stone ring
By Tiffany & Co.
Located in Beverly Hills, CA
Tiffany & Co. 5.74 carat emerald cut diamond platinum three stone ring is an extraordinary example of timeless elegance and exceptional diamond quality.
Diamond, Platinum
Tiffany & Co. T Narrow Pave Diamond Band -White Gold 18k Rd .45ctw Ring Sz 6 1/2
By Tiffany & Co.
Located in Greensboro, NC
Retail Price: $6,950 Size: 6 1/2 Brand: Tiffany & Co. Collection: T Design: Narrow Pave Ring Metal Content: 18k White Gold Stone Information Natural Diamonds Carat(s): .45ctw Cu...
Diamond, 18k Gold, White Gold
Tiffany & Co. Solitaire Diamond Engagement Ring 18 Karat Yellow Gold 0.42 Carat
By Tiffany & Co.
Located in London, GB
Tiffany & Co solitaire diamond ring in 18 karat yellow gold 0.42 carat.
Diamond, 18k Gold, Yellow Gold
$68,000Sale Price|20% Off
Tiffany & Co. Platinum Emerald Cut Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
A timeless expression of understated elegance, this authentic Tiffany & Co. solitaire engagement ring is crafted in luxurious platinum and showcases a beautifully proportioned em...
Diamond, Emerald, Platinum
Tiffany & Co. Natural Pearl and Diamond Ring
By Tiffany & Co.
Located in New York, NY
Item #: R-22346 Artist: Tiffany & Co. Country: United States Circa: 1910 Size: 6 (this ring can be sized; please contact the gallery for further information) Materials: 2 old Europea...
Diamond, Natural Pearl, Platinum
Tiffany & Co. Sapphire and Diamond Cluster Ring
By Tiffany & Co.
Located in London, GB
Condition: Used (Very Good) Weight: 5.1 grams Ring Size: L 1/2 (52) Band Width: 1.5mm Sapphire Dimensions: 4.5mm Total Diamond Weight: Approx. 0.28 Carats, Diamond Details: Colour – ...
Diamond, Sapphire, Platinum
Tiffany & Co. Classic Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in London, GB
Gemstone: Diamond Stone Shape: Round Brilliant Carat Weight: 0.40 Colour: E Clarity: VS1 Certification: Tiffany #31905516/O06181046 Designer: Tiffany & Co.
Diamond, Platinum
Tiffany & Co. Baguette Cut Diamond and 18 Carat White Gold Wedding Band Ring
By Tiffany & Co.
Located in London, GB
The wonderful piece features 2 fine quality baguette cut diamonds, weighing a total of approximately 0.30ct combined, channel set in an open back setting, at the centre of a high pol...
Diamond, Gold, 18k Gold, White Gold
Tiffany & Co. 3mm Diamond Channel Band - 950 Round .54ctw Wedding Ring
By Tiffany & Co.
Located in Greensboro, NC
Retail Price: $5900 Size: 6 1/2 Sizing Fee: Up 1 size for $80 or Down 1/2 a size for $60 Brand: Tiffany & Co. Design: 3mm Channel Band Metal Content: Platinum 950 Stone Info...
Diamond
Tiffany & Co. Art Deco Sapphire Diamond Ring
By Tiffany & Co.
Located in London, GB
Tiffany & Co. Art Deco sapphire and diamond ring.
Diamond, Sapphire, Platinum
Tiffany & Co 3.18ct Diamond ‘Embrace’ Full Eternity Ring
By Tiffany & Co.
Located in London, GB
This full eternity band comes with a Tiffany & Co box. Gemstone: Diamond Stone Shape: Round Brilliant Carat Weight: 3.02 Colour: F Clarity: VVS Metal: Platinum Certification: Tiffan...
Diamond, Platinum
Tiffany & Co. Tiffany Forever Round Diamond Semi-Eternity Band Ring in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Metal: Platinum Gemstones: Diamonds Diamond Count: 9 Diamond Cut: Round Diamond Total Carat Weight: 0.27 CTW Diamond Color: G-H Diamond Clarity: VS1-VS2 Diamond Measurements: 2...
Diamond, Platinum
Tiffany & Co Soleste Oval 1.14ct Diamond Halo Ring
By Tiffany & Co.
Located in London, GB
Gemstone: Diamond Stone Shape: Oval Brilliant Cut Carat Weight: 1.14 Colour: E Clarity: VVS2 Metal: Platinum Age: Modern, Pre-owned Size: H 1/2 Designer: Tiffany & Co.
Diamond, Platinum
Tiffany & Co Brilliant Cut 0.58ct Diamond Solitaire Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Model: 0.58ct Diamond Tiffany Setting Ring Type: Ring Serial Number: undefined RRP: £5,925 Accompanied By: Tiffany Box Material(s): Platinum Gemstone: Diamond UK Ring Size: M 1/2 EU ...
Diamond, Platinum
Tiffany & Co. 2.42ct Brilliant Cut Diamond Platinum Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Model: 2.42ct Diamond Tiffany Setting Ring Type: Ring Age: 2001 Accompanied By: Tiffany & Co.
Diamond, Platinum
$2,895Sale Price|41% Off
Tiffany & Co. Platinum Diamond Forever Band Ring 0.27ct 4.58g
By Tiffany & Co.
Located in SYDNEY, NSW
Set with 9 round brilliant cut diamonds with a total combined weight of 0.27ct. Metal: Platinum PT950 Carat: 0.27ct Colour: N/A Clarity: N/A Cut: Round Brilliant Cut Weight: 4.58 gr...
Diamond, Platinum
Tiffany & Co. 18k White Gold Diamond T Wire Ring
By Tiffany & Co.
Located in Aventura, FL
Brand: Tiffany & Co. Period: Contemporary Metal: 18K White Gold Stones: Natural Diamonds Ring Size: 6 1/2 to 7 (sizable) Stamped: Tiffany & Co.
Diamond, White Diamond, Gold, 18k Gold, White Gold
2 Jean Schlumberger by Tiffany Sixteen Stone Diamond Rings in Platinum and 18k
By Jean Schlumberger for Tiffany & Co.
Located in Wailea, HI
2 Jean Schlumberger by Tiffany Sixteen Stone Diamond Rings in Platinum and 18k One-of-a-Kind Vintage Tiffany & Co.
Diamond, 18k Gold, Platinum
Tiffany & Co. Forever 3mm Shared Prong Diamond Wedding Band Platinum .57ctw Ring
By Tiffany & Co.
Located in Greensboro, NC
Retail Price: $7,000 Size: 6 1/4 Sizing Fee: Up 2 sizes for $80 or Down 1 size for $60 Brand: Tiffany & Co. Collection: Forever Design: 3mm shared prong Metal Content: Platin...
Diamond, Platinum
Tiffany & Co Very rare large Rubellite and diamond ring
By Tiffany & Co.
Located in Addlestone, GB
Tiffany & Co Rubellite and Diamond ring. Set in platinum, with a large pear cut rubellite tourmaline of approximately 6.15 carats With a Halo border of 53 round brilliant cut Dia...
Diamond, Rubelite, Platinum
Tiffany & Co. GIA Certified Engagement Ring in Platinum with 0.45cts Diamond
By Tiffany & Co.
Located in Miami, FL
This modernist piece have been crafted in solid .950/.999 platinum with high polished finish. Diamonds: Mount in the center in a six-prongs setting, with 1 round brilliant cut diamo...
Diamond, White Diamond, Platinum
Tiffany & Co. 0.24ct Cushion Cut Diamond Platinum Soleste Ring
By Tiffany & Co.
Located in Bishop's Stortford, Hertfordshire
Tiffany & Co. 0.24ct Cushion Cut Diamond Platinum Soleste Ring Product Details Xupes Ref: J1311 Brand: Tiffany & Co.
Diamond, Platinum
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.
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 rings, vintage 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.