GIA Certified .91 Carat Diamond Solitaire Engagement Ring
Located in Stamford, CT
sizable. Platinum Stamped: 10% irid PLAT 6.18 mm wide at top 6.36 mm high at top 1.5 mm wide at bottom
Diamond, Platinum
7.50 Carat Square Colombian Emerald Diamond Engagement Ring
Located in Stamford, CT
weight .70cts, F, VS Size 4.5 and sizable Platinum Tested: Platinum Stamped: Irid Plat 9.5 grams Width at
Diamond, Emerald, Platinum
Art Deco 2.82 Carat Antique Cut Diamond Engagement Ring
Located in Chicago, IL
. Stamp: 10% IRID PLAT Metal: platinum Ring size: 6 1/2 Gross weight: 3.95 grams GIA, 2017, Report No
Diamond, Platinum
Sold|$12,575
Unheated 6.93 Carat Spinel and Diamond Ring
Located in Chicago, IL
beautifully made platinum mounting with double claw prongs. Ring size 6 1/2 Material: Platinum Stamp: 10%IRID
Diamond, Spinel, Platinum
Tiffany & Co. GIA Certified 1.11 Carat Diamond Blue Sapphire Engagement Ring
By Tiffany & Co.
Located in Stamford, CT
. 1.47cts Size 6.75 and sizable Platinum Stamped: 10% Irid plat Hallmark: Tiffany & Co 4.0 grams
Diamond, Sapphire, Blue Sapphire, Platinum
Art Deco 1.72 Carat Marquise Diamond Scrolling Pave Dinner Ring, circa 1930
Located in Philadelphia, PA
gallery featuring a geometric motif Stamped Irid Plat for platinum-iridium Circa: 1930s Ring Size: 5
Diamond, White Diamond, Platinum
Art Deco 1.72 Carat Marquise Diamond Scrolling Pave Dinner Ring, circa 1930
Located in Philadelphia, PA
gallery featuring a geometric motif Stamped Irid Plat for platinum-iridium Circa: 1930s Ring Size: 5
Diamond, White Diamond, Platinum
Contemporary 1.30 Total Carat Diamond Bypass Ring
Located in Narberth, PA
A stunning Vintage diamond ring from the 1960's era! This unique platinum piece features two rows
Diamond, Platinum
Art Deco Sapphire Diamond Engagement Ring 1.12ct Original 1930-1940 Antique Plat
Located in Dearborn, MI
Platinum Features a Genuine 1ct Natural Blue Round Sapphire at its Center With its Unique Charm, this
Diamond, Sapphire, Platinum
Art Deco 2 Stone Sapphire Diamond Ring 2.71ct Baguettes Original 1920's Plat
Located in Dearborn, MI
Characteristics) Your Ring's Specs Size: 6.5 (Sizing Available) Metal: Platinum Stamp: IRID PLAT Weight
Diamond, Sapphire, Platinum
David Webb 2.40 Carat Diamond Cultured Pearl Drop Ear-Clip Earrings
By David Webb
Located in Philadelphia, PA
Completed by hinged omega backs Signed Webb and stamped 10% Irid Plat for platinum-iridium Measures: 1/2 x
White Diamond, Cultured Pearl, Platinum
Sold|$13,500
F & F Felger Art Deco Natural Jade Diamond Ring
Located in Litchfield, CT
color and VS1 clarity diamonds HALLMARKS: PLAT. For Platinum, 10% IRID for 10% Iridium and FFF for F
Jade, White Diamond, Platinum
GIA Certified 3.00 Carat Blue Yellow Sapphire Diamond Engagement Ring
Located in Stamford, CT
baguette diamonds, G-H VS approx. .50cts Size 6 and sizable Platinum Stamped: 10%IRID PLAT Width at top
Diamond, Sapphire, Blue Sapphire, Yellow Sapphire, Platinum
M. Waslikow & Son Art Deco Diamond and Synthetic Sapphire Tennis Bracelet
Located in Chicago, IL
. Waslikow & Sons. Stamp: 10 IRID PLAT (maker's mark) Material: Platinum Gross weight: 22.60 grams Length: 7
Diamond, Sapphire, Platinum
Colombian Emerald and 1.20ct Diamond Twist Ring - Antique
Located in Jesmond, Newcastle Upon Tyne
to the interior with the maker's mark (YARD) and the platinum fineness mark (IRID.PLAT.). This
Diamond, Emerald
Cartier Diamond Sapphire Irid Platinum Line Tennis Bracelet
By Cartier
Located in Southampton, PA
Irid Platinum Diamond And Sapphire Line Tennis Bracelet by Cartier. This bracelet comes with
Diamond, Blue Sapphire, Platinum
Art Deco Round Square Diamond Platinum Hinged Link Bracelet
Located in Stamford, CT
1.70cts, F-G, VS. Width: 12.5 to 4.5mm. Depth: 2.5mm. 17.7 grams. Stamped: Irid Platinum. Length: 6 7
Diamond, Platinum
Vintage Tiffany & Co Diamond Emerald Platinum Cocktail Ring
By Tiffany & Co.
Located in Southampton, PA
Irid Platinum Emerald Diamond Vintage Ring by Tiffany & Co. With 30 round old European cut VVS1
Diamond, Emerald, Platinum
Art Deco Milgrain Band Ring, Platinum, Ring Size 6.75, Stackable
Located in McLeansville, NC
% IRID Platinum" *Antique 1931 SKU: R3825 A Couple Of Things to Note: * This is a vintage item and may
Platinum
Tiffany & Co. Purple Amethyst Platinum Heart Pendant Necklace
By Tiffany & Co.
Located in Stamford, CT
Amethyst, approx. total weight 41.50cts, VS, 24.31 x 23.30 x 16.28mm Irid Platinum Stamped: Irid Plat
Amethyst, Platinum
C.H. Meylan Platinum Diamond and Enamel Pocket Watch
By C.H. Meylan
Located in Stamford, CT
diamond rim Outside case: RBP engraved Inside case: 10% Irid Platinum 3423 Movement: CH Meylan Brassus
Diamond, Enamel, Platinum
Tiffany & Co. Square Emerald Diamond Estate Ring 18 Karat Two-Tone Gold
By Tiffany & Co.
Located in Boca Raton, FL
karat yellow gold, and is currently size 6.5. Signed Tiffany & Co. 18k IRID Platinum.
Diamond, White Diamond, Emerald, 18k Gold, Yellow Gold, Platinum
Vintage Tiffany & Co. Emerald Diamond Cocktail Ring
By Tiffany & Co.
Located in Southampton, PA
Irid Platinum Emerald Diamond Ring by Tiffany & Co. With 16 round shape diamonds and 6 marquis
Diamond, Emerald, Platinum
1.75 Carat Platinum Old Mine Diamond Engagement Ring
Located in Washington Depot, CT
10% IRID. Platinum H 5.3 g / 3.4 dwt Excellent pre owned condition.
Diamond, Platinum
Antique Art Deco Platinum GIA 2.57ct Large Center Diamond Engagement Ring
Located in Montclair, NJ
+ Platinum (tested) - Marked 5% Irid Platinum Weight: 5.45 Grams Ring Size: 6.0 (fitted on a finger. We can
Diamond, Yellow Diamond, Emerald, Platinum
Antique 1.71 Carat Old Euro Diamond Sapphire Wedding Platinum Ring EGL, USA
Located in New York, NY
Diamond is set into Handmade Platinum Mounting (stamped irid-platinum); the weight of the ring is 3.27
Diamond, Blue Sapphire, Platinum
1930s Art Deco Star Sapphire Diamond Platinum Ring
Located in Narberth, PA
shank is "IRID PLATINUM." An enchanting ring, it looks very flattering when worn and would make a
Diamond, Star Sapphire, Platinum
Old European Cut Round and Baguette Diamond Cocktail Ring in Platinum E-F / VS1
Located in Scottsdale, AZ
% IRID PLATINUM Condition: Very good
Diamond, Platinum
Art Deco Sapphire Diamond Engagement Ring .72ct Antique Platinum KSK 1947
Located in Dearborn, MI
) Weight: 4.2 Grams Metal: Platinum Stamp: 10% IRID PLATINUM Measures: 5.9mm off the finger 5.6mm in
Diamond, Sapphire, Platinum
Sold|$1,450
Art Deco Diamond Platinum Engagement Ring
Located in Litchfield, CT
carat total weight I-J color, SI1 clarity HALLMARKS: 10% Irid rubbed p for platinum, and maker's
Diamond, Platinum
Sold|$3,795
Platinum Art Deco Diamond Ring 2.03ct
Located in Laguna Beach, CA
Ladies Art Deco platinum and diamond ring. Stamped Plat Irid and tests 90% platinum and 9.5
Diamond, Platinum
Platinum Diamond Ring with Old Miner Diamonds
Located in Washington Depot, CT
noticeable when wearing but noticeable in picture Stamped platinum and 10% IRID
Diamond, Platinum
Sold|$5,500
Art Deco Diamond Platinum Engagement Ring
Located in Litchfield, CT
HALLMARKS: IRID for iridium, PLAT for platinum and maker's mark STOCK NUMBER: 17360 Jewelry acquired
White Diamond, Platinum
Art Deco Old European Cut Diamond Platinum Ring
Located in Stamford, CT
top: 9.7mm Height at top: 7.2mm Width at Bottom: 1.6mm 3.4 grams Tested: Platinum Stamped: 10
Diamond, Platinum
Art Deco Hamilton Platinum Diamond Ladies Watch
By Hamilton
Located in New York, NY
Measurements: 5.75 inches 14 x 7.8mm Hallmark: 10% IRID, PLAT Metal: Platinum case and bracelet, 15k white gold
Diamond, Platinum
Oval Royal Blue Sapphire Diamond Platinum Ring
Located in Stamford, CT
clarity Platinum Stamped: 10% Irid Plat 5.9 grams Width at top: 8.8mm Height at top: 6.7mm Width at
Blue Sapphire, Diamond, Platinum
Art Deco Diamond Old European Platinum Engagement Ring
Located in Stamford, CT
single cut diamonds, approx. total weight .06cts, G, VS Platinum Stamped: 10% irid Plat 2.7 grams Width
Diamond, Platinum
Art Deco Diamond Set Platinum Engagement Ring
Located in Litchfield, CT
total weight I color, SI1 clarity diamonds for .90 carat overall HALLMARKS: 10%IRID PLAT for platinum
White Diamond, Platinum
Antique Square Cut Diamond Platinum Engagement Ring
Located in Stamford, CT
weight .08cts, G, VS1-SI1 3.2 grams Platinum Size 6.5 and sizable Stamped: Irid Plat Tested
Diamond, Platinum
Art Deco 10.60 Carat Aquamarine Diamond Platinum Ring
Located in Stamford, CT
: 9.5mm Width at bottom: 1.8mm 7.2 grams Stamped: 10% irid Plat for 10% Iridium Platinum
Aquamarine, Diamond, Platinum
Antique .62 CTW Diamond Platinum Alternative Engagement Ring
Located in Philadelphia, PA
accent diamonds weighing 0.27 CTW Splendid alternative or engagement ring Stamped 900 Plat .100 IRID
Diamond, Platinum
EGL Certified 1.23 Carat Marquise Diamond Platinum Engagement Ring
Located in Stamford, CT
. .30cts Size 6.5 and sizable Platinum Stamped: 10% IRID PLAT 5.3 grams Width at top: 15.1mm Height at
Diamond, Platinum
Natural GIA Cert Blue Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
, VS – SI Platinum Tested: Platinum Stamped: 10% Irid Plat 3.4 grams Width at top: 7.39mm Height
Blue Sapphire, Diamond, Platinum
Antique Art Deco Platinum Orange Blossom Wedding Band Ring
Located in Philadelphia, PA
Engravings: With a dedication - CLM & DCK Oct 23 1926 Marks: 5% IRID-PLAT for Iridium plated platinum
Platinum
GIA Certified Natural Coral Diamond Platinum Dangle Drop Earrings
Located in Stamford, CT
cabochon coral 118 round brilliant cut H-I SI-I diamonds, Approximate 1.10cts Platinum Stamped: IRID PLAT
Coral, Diamond, Platinum
2.86 Carat Diamond Swirl Platinum Gold Pendant Brooch
Located in Stamford, CT
: 14k & Platinum Stamped: 10% Irid Plat 17.8 grams Top to bottom: 47.35mm or 1.86 inches Width: 33.47mm
Diamond, Platinum, Gold, 14k Gold, White Gold
Oscar Heyman Brothers Diamond And Sapphire Platinum Ring c1960
By Oscar Heyman
Located in Stamford, CT
: 8mm Width at Bottom: 4mm Size 6.25 and sizable 16.5 grams Tested: Platinum Stamped: Irid Plat
Diamond, Sapphire, Platinum
Retro 8.35 Carat Vivid Ruby Diamond Platinum Line Bracelet
Located in Philadelphia, PA
Stamped Irid Plat for iridium platinum Length: 7 1/8 inch Width: 1/8 inch Circa 1940 Total weight
White Diamond, Ruby, Platinum
EGL Certified Art Deco Diamond Three-Stone Platinum Engagement Ring
Located in Stamford, CT
Diamonds, approx. total weight .33cts, G – H, VS2 – SI1 Platinum Tested: Platinum Stamped: 10% Irid Plat
Diamond, Platinum
Natural Light Blue Star Cabochon Sapphire Diamond Platinum Ring
Located in Stamford, CT
cut diamonds, .03cts each, approx. total weight .18cts, F, VS Stamped: 10% irid Plat Platinum 8.2
Diamond, Star Sapphire, Platinum
Art Deco Old European Diamond Ideal Cut Platinum Engagement Ring
Located in Stamford, CT
Platinum Tested: Platinum Stamped: 10% irid Plat 3.2 grams Width at top: 6.7mm Height at top: 7mm Width at
Diamond, Platinum
Tiffany & Co. 1.12 Carat Sapphire Platinum Eternity Wedding Band Ring
By Tiffany & Co.
Located in Stamford, CT
, approx. 1.12cts Size 6 and not sizable Platinum Stamped: IRID PLAT Hallmark: Tiffany+Co 2.9 grams Width
Sapphire, Platinum
GIA Certified 1.54 Carat Diamond Platinum Art Deco Engagement Ring
Located in Stamford, CT
baguette F-G VS diamonds Approximate .08cts Size 7 and sizable Platinum Stamped: 10%IRID PLAT 3.8 Grams
Diamond, Platinum
Tiffany & Co. GIA Certified .58 Carat Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in Stamford, CT
approx. 0.32cts, D – E, VS Size 6.25 and sizable Platinum Tested: Platinum Stamped: Irid Plat Hallmark
Diamond, Platinum
1940s Retro 1.42 Carat Diamond Platinum Foliate Cluster Engagement Ring
Located in Philadelphia, PA
weighing approximately 0.70 carat total, I to J color and VS to SI clarity (mostly VS) Stamped Irid Plat
White Diamond, Platinum
1.45 Carat Emerald Cut Diamond Platinum Lovebright Engagement Ring GIA
Located in Philadelphia, PA
the Lovebright mountings collection With maker's mark for Fisher & Co. Stamped 900 Plat 10 Irid for
Diamond, White Diamond, Platinum
Art Deco 1.5 Carat Marquise Diamond Platinum Engagement Ring, circa 1930s
Located in Cape May, NJ
: 10% IRID PLAT Composition: 90% Platinum 10% Iridium Primary Stone: Marquise Cut Diamond Stone
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.
Ancient Egyptians referred to the vibrant stone as the “gem of the sun.”
There are many ways to showcase a diamond, from traditional prongs to a smooth, streamlined bezel. Here’s everything you need to consider.
The vintage bombé ring is bursting with color and timeless style.
Zircon is a magnificent and underrated natural gemstone that has been worn and adored for centuries.
Givers of fine gems enjoy surprise more than receivers, and women more than men. Find out what else our survey of 3,000 Americans revealed.
If diamonds don’t seem right, what about a magnificent sapphire, ruby or emerald?
Accounting for just 1 percent of all diamonds, these marvels of nature are exceedingly rare and gorgeously complex.
Learn about these antique jewelry styles, then choose a design that speaks to you.