Tiffany Co Swiss Platinum Diamonds Pocket Watch
By Tiffany & Co.
Located in New York, NY
An American Tiffany and Co Platinum pocket watch. Swiss made. An enameled dial with Roman numerals
Diamond, Platinum, Enamel
Antique Art Deco Platinum Diamond Half-Eternity Wedding Band
Located in Great Neck, NY
illusion of 4 larger diamonds. 10%IRID Platinum is marked inside the shank. Unisex! #R0312 Metal
Diamond, Platinum
Art Deco 2.35 Carat Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
engraved pattern on entirety of shank Circa 1930's Stamped 5% Irid Platinum Ring Size: 7 1/2
Diamond, Platinum
1.20 Carat White Sapphire Baguette Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
.10cts, G, VS Size 7 and sizable Platinum Stamped 10% irid Platinum 3.8 grams Width at top: 6.5mm Height
Diamond, Sapphire, Platinum
Platinum Lab Created Sapphire Diamond Ring Size 6 #15637
Located in Washington Depot, CT
Vintage Platinum Lab Created Sapphire and Diamond Ring Size 6 JAGi Certified- This elegant ring
Diamond, Sapphire, Platinum
Sold|$2,198
Vintage Platinum Diamond Cluster Ring
Located in Los Angeles, CA
Specifications Metal: Irid. Platinum Type: cluster ring BuyWeight: 4.80 grams Size: 5.25 US Hallmark: "IRID
Diamond, 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
Tiffany & Co. Cultured Pearl Sapphire Emerald Diamond Necklace
By Tiffany & Co.
Located in New York, NY
. With signed Tiffany Box. Signed, "Tiffany & Co” “Irid. platinum”. (MG #16560)
Cultured Pearl, Diamond, Emerald, Sapphire, Platinum
1960s Cartier 14 Karat White Gold Solitaire Diamond Engagement Ring 1.08 Carat
By Cartier
Located in Washington Depot, CT
clarity and G in color Inside of band is stamped Cartier 14K 10% Irid Platinum Band is approx. 2.5mm in
Diamond, 14k Gold
1960s Cartier 14 Karat White Gold Solitaire Diamond Engagement Ring 1.08 Carat
By Cartier
Located in Washington Depot, CT
clarity and G in color Inside of band is stamped Cartier 14K 10% Irid Platinum Band is approx. 2.5mm in
Diamond, 14k Gold
Sold|$12,948
Art Deco Platinum Diamond Engagement Ring 2.68ct
Located in Narberth, PA
An outstanding diamond engagement ring from the Art Deco (ca1930s) era! Crafted in platinum, the
Diamond, Platinum
Sold|$4,790
Edwardian Platinum Sapphire & Diamond Ring
Located in Narberth, PA
the shank is stamped: "IRID PLATINUM". A gorgeous piece, this ring would make a fantastic addition to
Diamond, Sapphire, Platinum
Lusserna Art Deco Diamond and Platinum Cocktail Wristwatch, Circa 1930
Located in London, GB
marked 10% irid platinum, with service record numbers M555, 17989, 11-49NY. The movement is signed R. H
Diamond, 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
Tiffany & Co. Mid-Century Platinum .54 ct Pear Shape Diamond Engagement Ring
By Tiffany & Co.
Located in New York, NY
: IRID Platinum Finger Size: 5 (resizable) Width of Shank: 1.5mm Weight: 3.4 grams Hallmarks: TIFFANY
Diamond, Platinum
Vintage Sapphire Ring 1.70ct Original 1920's Deco Diamond Platinum Engagement
Located in Dearborn, MI
Ring's Specs Size: 6 (Sizing Available for $100) Metal: Platinum Stamp: 10% IRID Platinum We
Diamond, Sapphire, Platinum
3.16ctw Diamond Cluster Ring, Platinum 100 IRID, Ring Size 6.5
Located in McLeansville, NC
Platinum 100 IRID. This size 6.5 ring features an impressive array of diamonds arranged in a dazzling
Diamond, Platinum
10% Irid 90% Platinum 6.65 Carat Pear Shape Diamond with Tapered Baguette Ring
Located in Montgomery, AL
10% Iridium 90% Platinum Pear Shape Cut Diamond With A Baguette Cut Diamond Ring 6.6 Grams Ring
Diamond, Platinum
Art Deco Platinum Old Euro Cut .90Ct Diamond and Sapphire Vintage Solitaire Ring
Located in Addison, TX
% Irid Platinum Engraving: none Width: 9.30mm at head tapering to 1.50mm at shank Finger to Top of Ring
Diamond, Sapphire, Platinum
Vintage 10% Irid 90% Plat European Cut Diamond with Baguette 3-Stone Ring
Located in Montgomery, AL
10% Iridium 90% Platinum Round European Cut Diamond With A Baguette Cut Diamond Ring 4.0 Grams Ring
Diamond, Platinum
10% Irid 90% Plat GIA 1.52 F-VS2 Marquise Diamond & Baguette Wedding Set Ring
Located in Montgomery, AL
10% Iridium 90% Platinum Marquise GIA Certified Diamond 3 Stone Engagement Ring W/ Matching Band
Diamond, Platinum
Sold|$1,450
Platinum Diamond Ring
Located in Towson, MD
Platinum (stamped 10% IRID PLAT) ring with 6 prong set round brilliant diamonds. The diamonds weigh
Diamond, Platinum
Sold|$875
Platinum and Diamond Ring
Located in Washington Depot, CT
: SI1-VS2 Ring Size: 5.5 Weight: 2.1 dwt. / 3.4 gr. Stamped: Platinum 55 IRID Very good condition
Diamond, Platinum
Sold|$20,000
Estate Platinum Diamond Bracelet
Located in Dallas, TX
Stamped IRID PLA Platinum Diamond Bracelet with 12.5 CTW Diamonds and this bracelet is 7 inches
Diamond, Platinum
Sold|$13,500
Platinum Diamond Engagement Ring
Located in Towson, MD
One platinum (stamped IRID PLAT) estate engagement ring set with one 2.25 carat European cut
Diamond, Platinum
Sold|$17,845
Diamond Line Platinum Bracelet
Located in Stamford, CT
22.0 grams Tested: Platinum Stamped: 10% irid Plat
Diamond, Platinum
Sold|$12,950
7.28 Carat Diamond Platinum Necklace
Located in Stamford, CT
, G-H VS approx. 2.28cts 209 straight cut baguettes, G-H VS approx. 5.00cts Platinum Stamped: 10%IRID
Diamond, Platinum
Sold|$4,750
Platinum Green Sapphire Ring
Located in Towson, MD
Platinum (stamped 10%IRID PLAT) ring featuring 8.85 mm by 6.9 mm oval green sapphire weighing 2.74
Green Sapphire, 18k Gold, Yellow Gold, Platinum
Sold|$8,950
Platinum Engagement Ring, circa 1960
Located in Towson, MD
One platinum (stamped 10%IRID PLAT) engagement ring featuring one 7.99X7.93mm round brilliant
Diamond, Platinum
Tiffany & Co. Platinum Wedding Band Ring
By Tiffany & Co.
Located in Philadelphia, PA
Tiffany & Co. Stamped 100 Irid - 900 Plat. for Platinum-Iridium Ring Size: 4 1/2 & sizable Top measures
Platinum
Natural Oval Chrysoberyl Diamond Platinum Ring
Located in Stamford, CT
, VS Platinum Tested: Platinum Stamped: 10% irid Plat 5.5 grams Width at top: 10mm Height at top
Chrysoberyl, Diamond, Platinum
Edwardian Diamond Platinum Bow Design Engagement Ring
Located in Stamford, CT
Platinum Tested: Platinum Stamped: 5% Irid 3.8 grams Width at top: 9.46mm Height at top: 5.14mm Width
Diamond, Platinum
Sold|$4,995
Art Deco Diamond Platinum Engagement Ring
Located in Stamford, CT
.02cts, H, SI1 2.8 grams Platinum Stamped: 10% irid Tested: Platinum Width at top: 7mm Height at
Diamond, Platinum
Rolex Platinum Diamond Wristwatch, circa 1960
By Rolex
Located in North Hollywood, CA
) round brilliant Diamonds totaling 2.50 Carats. Signed "10% Irid 90% Platinum" on back of case. Movement
White Diamond, Platinum
Sold|$4,250
Platinum Art Deco Diamond Engagement Ring
Located in Towson, MD
One platinum (stamped 10%IRID PLAT D.R. To L.M.C.V 7-18-30) Art Deco diamond engagement ring set
Diamond, Platinum
Sold|$2,500
Art Deco Platinum Diamond Shield Ring
Located in Cape May, NJ
Era: Art Deco Hallmark: 5% IRID PLAT Composition: Platinum Primary Stone: Diamond Stone Carat
Diamond, Platinum
Art Deco Single Cut Diamond Platinum Engagement Ring
Located in Stamford, CT
. total weight .10cts, F, VS Platinum Stamped: 10% irid Plat 3.1 grams Width at top: 5.9mm Width at
Diamond, Platinum
Sold|$1,555
Art Deco 0.60 Carat Diamond Platinum Ring
Located in Philadelphia, PA
irid 900 plat for platinum With maker's mark CTW: 0.60 Ring Size: 5 & sizable Top measures: 7.3 mm
Diamond, Platinum
Sleek Art Deco Platinum Bar Link Charm Bracelet
Located in Philadelphia, PA
jump ring spacer links Completed by spring ring clasp Stamped IRID PLAT for platinum Circa: 1930s
Platinum
Vintage Sapphire Diamond Platinum Line Bracelet
Located in Philadelphia, PA
clarity Completed by a concealed clasp with a fold-over safety Stamped Irid Plat for platinum Inscribed
Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum
Art Deco Platinum Raised Flower Wedding Band Ring
Located in Philadelphia, PA
inside inscription, signed Arbutus, and maker's mark for Byard F. Brogan Stamped 900 Plat 100 Irid for
Platinum
Edwardian 0.80 Carat Diamond Platinum Engagement Ring
Located in Philadelphia, PA
engraved foliate shoulders partway down shank Stamped irid. plat for iridium platinum Ring Size: 4 3/4
Diamond, Platinum
GIA Certified 3.12CTW Oval Diamond Ring in Platinum
Located in Webster, NY
Diamonds: .50CTW, Tapered Baguette, D-E Color, VS1 Clarity Metal: Platinum Stamped: "10% IRID PLAT" Weight
Diamond, Platinum
Retro Period, Platinum, Cabochon Ruby & Diamond Ring
Located in Brisbane City, QLD
% IRID. PLAT.' for platinum purity Ring size - 54/N Total diamond weight - 0.78 carat Total weight of
Diamond, Ruby, Platinum
1940s Retro 1.08 Carat Diamond Platinum Engagement Ring
Located in Philadelphia, PA
clarity With a pierced triangle motif gallery Stamped 10% Irid Plat for iridium platinum Circa 1940's
Diamond, Platinum
Round Channel and Baguette Diamond Platinum Dome Ring
Located in Stamford, CT
3.08cts 62 baguette diamonds approx. total weight 2.50cts, E color, VVS to VS Platinum Stamped 10% irid
Diamond, Platinum
Retro 2.89 Carat Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
VS to SI2 clarity Squared-off, tri-lobe prongs with millegrain platinum detail Stamped PLATINUM
Diamond, Platinum
GIA Certified .81 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
Vintage 1950's diamond engagement ring. GIA certified faint brown center stone in a platinum
Diamond, Platinum
1.31 Carat Diamond Marquise Baguette Platinum Engagement Ring
Located in Stamford, CT
: Platinum Stamped: 10% irid Plat Hallmark: ME Width at top: 11.4mm Height at top: 8.2mm Width at bottom
Diamond, Platinum
Art Deco Platinum Geometric Bar Link Chain Charm Bracelet
Located in Philadelphia, PA
centering a pierced trellis design Completed by a spring ring clasp Stamped Irid Plat for platinum-iridium
Platinum
Edwardian 1.00 Carat Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
around shank CTW: 1.00 Stamped 5% irid plat for platinum Ring Size: 7 Top measures: 6.6 mm and sits
Diamond, Platinum
Art Deco .31 Carat Diamond Platinum Dome Engagement Ring
Located in Stamford, CT
, VS1 – SI1 Platinum 5.7 grams Tested: Platinum Stamped: 10% Irid Plat Width at top: 12.95mm Height at
Diamond, Platinum
EGL Certified 3.12 Carat Diamond Platinum Engagement Ring
Located in Stamford, CT
center stone in a three-stone platinum setting with 2 tapered baguette side diamonds. The center diamond
Diamond, Platinum
Art Deco Old European Diamond Platinum Engagement Ring
Located in Philadelphia, PA
, and triangular motif Stamped .900 Plat .100 Irid for Platinum-Iridium Ring Size: 6 1/2 & sizable
Diamond, Platinum
Delicate Art Deco Diamond Platinum Filigree Link Bracelet
Located in Philadelphia, PA
-clean and white Completed by pierced navette spacer links and a spring ring clasp Stamped IRID PLAT
Diamond, White Diamond, Platinum
1930s Art Deco 0.73 Carat Diamond Platinum Engagement Ring
Located in Philadelphia, PA
weighing approximately 0.08 carat total, eye-clean and white Stamped 10% Irid Plat for platinum-iridium
Diamond, Platinum
Art Deco Sapphire Diamond Engagement Ring .68ct Antique Platinum Bishop & Bishop
Located in Dearborn, MI
Size: 6.25 (Sizing Available) Weight: 2.8 Grams Metal: Platinum Stamp: 10% IRID PLAT Measures
Diamond, Sapphire, 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.