GIA Certified Round Transition Cut Loose Diamond 0.67ct
Located in Laguna Beach, CA
GIA Certified .67ct Round Transition Cut Diamond. H Color SI1 Clarity Good Cut.
Late 20th Century Loose Gemstones
Diamond
GIA Certified Round Transition Cut Loose Diamond 0.67ct
Located in Laguna Beach, CA
GIA Certified .67ct Round Transition Cut Diamond. H Color SI1 Clarity Good Cut.
Diamond
Mid-Century 0.84 CTW Transitional Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.72 carat - J color with VS1 clarity Set by tri-beads in a stylized square form head flanked by pointed cathedral shoulde...
Diamond, Platinum
2.44 Carat Transitional Cut Platinum Diamond Art Deco Pendant Necklace
Located in Stamford, CT
1930's Art Deco transitional cut diamond pendant necklace. EGL certified center stone set in platinum with 7 round cut accent diamonds on a platinum 18.50 inch chain. 1 Transitiona...
Diamond, Platinum
Retro 0.95 CTW Transitional Diamond 14 Karat White Gold Vintage Engagement Ring
Located in Philadelphia, PA
Featuring a transitional cut diamond weighing approximately 0.85 carat - J color with VS clarity Set low in a square form head and flanked by two transitional cut diamonds Weighing c...
Diamond, Gold, 14k Gold, White Gold
16.14 Carat Round Cut Diamond Riviera Necklace
Located in New York, NY
Finely crafted in platinum featuring a center Transitional cut Diamond weighing 1.34 carat and Round Brilliant cut Diamonds weighing a total of approximately 14.80 carats. 16 inches ...
Diamond, Platinum
Transitional cut Round Diamond Ring 18K White Gold Hallmarked Delia
Located in East Brunswick, NJ
Set with a Transitional cut diamond in the center and round brilliant cut accent diamonds.
Diamond, White Gold
Vintage 1950s 12.00 Carat Graduating Old European Cut Diamond Tennis Bracelet
Located in New York, NY
Finely crafted in platinum with graduating Old European and Transitional cut Diamonds weighing approximately a total of 12.00 carats, E-F color, VS1-VS2 clarity.
Diamond, Platinum
Retro 1.02 CTW Transitional Cut Platinum 14K Yellow Gold Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 1.02 carats - H color with VS2 clarity Set with tri-split prongs in a square form platinum head and flanked by gold should...
Diamond, Gold, 14k Gold, Yellow Gold, Platinum
Mid-Century 1.36 CTW Transitional Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 1.06 carats - G color with VS clarity Basket set and flanked by cathedral shoulders bar set with tapered baguette cut diam...
Diamond, Platinum
Retro 0.38 CTW Transitional Diamond Platinum Vintage Knife Edge Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.32 carat - H color with VS2 clarity Set with tri-split prongs in a square form head and flanked by foliate motif shoulde...
Diamond, Platinum
European Cut Diamond Platinum Pendant
Located in Stamford, CT
1940s handmade open work pendant set with European and transitional cut diamonds. Hinged handmade Platinum bail. 3 old European cut diamonds approximate total weight .60cts. 14 Eur...
Diamond, Platinum
1950s 1.50 CTW Transitional Diamond Platinum Three Stone Vintage Engagement Ring
Located in Philadelphia, PA
Featuring a transitional cut diamond weighing approximately 1.25 carats - O/P color with VS1 clarity Flanked by cathedral shoulders bar set with tapered baguette cut diamonds Weighin...
Diamond, Platinum
Art Deco Filigree Three Stone Diamond Engagement Ring
Located in Stamford, CT
1930's raised top filigree Art Deco diamond engagement ring. 3 European transitional cut diamonds set in an 18k white gold filigree setting. 3 European transitional cut diamonds, a...
Diamond, 18k Gold, White Gold, Gold
EGL Certified .40 Carat Diamond Gold Filigree Art Deco Engagement Ring
Located in Stamford, CT
1930-1940 filigree transitional cut diamond engagement ring. Raised hand carved and filigree in its original 18k white gold setting. 1 transitional cut diamond, approx. total weight...
Diamond, Gold, 18k Gold, White Gold
Art Deco 1932 Transitional Diamond Platinum Vintage Stepped Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.58 carat - H color with VS2 clarity Bead set in a square form head and flanked by cathedral shoulders Accented by groove...
Diamond, Platinum
Art Deco Demaria 0.91 CTW Transitional Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.73 carat - I color with VS2 clarity Flanked by stylized geometric cathedral shoulders with milgrain detailing throughout...
Diamond, Platinum
Art Deco 1.30ct Sapphire and Diamond Three Stone Ring, c.1930s
Located in London, GB
An intense blue sapphire sits between two glittering transitional cut diamonds in this Art Deco trilogy ring.
Diamond, Sapphire, 18k Gold, White Gold, Platinum
Vintage 0.90 Carat Diamond Gypsy Ring
Located in London, GB
Here we have a classic 18ct yellow gold vintage diamond gypsy ring. A single round transitional cut diamond has been rub-over set at the centre of the face.
Diamond, 18k Gold
1.65 Carat Diamond Platinum Art Deco Pendant Necklace
Located in Stamford, CT
Art Deco 1930's diamond pendant necklace. 22 transitioanl and baguette cut diamonds on a 16 inch chain. 12 transitional cut diamonds, H-I VS-SI approx. .35cts 7 straight cut baguet...
Diamond, Platinum
Mid-Century 1.08 CTW Diamond Platinum Vintage Bypass Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.83 carats total L color with VS2 clarity - set in a bypass style prong and bezel mount Flanked by pierced scrolling bypa...
Diamond, Platinum
Retro French 18 Karat White Gold and 2.50 Carat Diamond Tank Ring
Located in New York, NY
Retro 18k White Gold and 2.50 Carats Transitional-cut Diamond Tank Ring c.1940s 12.5 grams Made in France Size 7
Diamond, 18k Gold, White Gold
Mid-Century 4.13 CTW Diamond Emerald Platinum Vintage Cluster Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.84 carat - H color with VS2 clarity Flanked by emerald cut emeralds weighing approximately 1.72 carats total Transparent...
Diamond, Emerald, Platinum
Retro 0.65 CTW Diamond Platinum Vintage Square Form Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.65 carat - H color with VS2 clarity Bead set in a square form head and flanked by square form cathedral shoulders Bead s...
Diamond, Platinum
Art Deco inspired diamond sapphire platinum target stud earrings
Located in Beverly Hills, CA
These Art Deco-inspired platinum target stud earrings feature two transitional cut diamonds totaling approximately 0.50 carats, G color, VS clarity, encircled by 30 calibre cut blue ...
Diamond, Sapphire, Platinum
Mid-Century 0.84 CTW Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.72 carat - J color with VS1 clarity Set with tri-beads in a square form head flanked by cathedral shoulders Accented by ...
Art Deco style 1.64 carat diamond emerald platinum square ring
Located in Beverly Hills, CA
This modern Art Deco-inspired platinum ring showcases a stunning 1.64 carat transitional cut diamond, framed by vibrant calibre cut emeralds and sparkling antique-cut diamonds.
Diamond, Emerald, Platinum
Antique Art Deco 1930s 3.50 Carat Diamond Circle Brooch
Located in New York, NY
Finely crafted in platinum with Marquise, Old European, and Transitional cut Diamonds weighing total of approximately 3.50 carats, accented by Sapphires.
Diamond, Platinum
Antique Edwardian 1910s 1.17 Carat Diamond Engagement Ring
Located in New York, NY
Finely crafted in 18k white gold with a GIA certified Transitional cut Diamond weighing 1.17 carats, I color, VS2 clarity, GIA #2151214984.
Diamond, 18k Gold
Elegant Oval Brooch with French & Mixed-Cut Diamonds
Located in Scottsdale, AZ
Stone Info: Old French Cut Diamonds 6x 2.5mm 1x 3mm Old European Diamonds 49x 2.5-1mm in size Transitional Cut Diamonds 4x 3mm 2x 3.5mm Likely Late 1800s early 1900s (mix of old F...
Diamond, Platinum
Circa 1950s 14K White Gold Diamond Swirl Cocktail Ring
Located in Hicksville, NY
Year: 1950s Item Details: Ring Size: 6.75 (Sizable) Metal Type: 14K White Gold [Hallmarked, and Tested] Weight: 3.6 grams Diamond Details: .50ct total weight, Round Brilliant Transit...
Diamond, Gold, 14k Gold, White Gold
Art Deco Diamond Solitaire Ring
Located in Denver, CO
A round transitional-cut diamond weighing approximately 0.50 carats, I color and VS clarity, centers this elegant Art Deco solitaire ring in a refined bezel setting atop an intricate...
Diamond, 18k Gold, White Gold
Art Deco 1920s Platinum 0.78ctw Diamond Solitaire Ring with Diamond Shoulders
Located in Staines-Upon-Thames, GB
A platinum and diamond ring, comprising one round transitional cut diamond, and six rose cut diamonds, set in platinum, to a platinum band.
Diamond, Platinum
Art Deco 2.97ct Emerald and Diamond Ring, c.1920s
Located in London, GB
Surrounded by a double halo of transitional cut diamonds is a fantastic 2.97 carat, natural emerald of Columbian origin.
Diamond, Emerald, 18k Gold, Platinum
Late Deco 0.80ct Ruby and Diamond Three Stone Ring, c.1940s
Located in London, GB
A luscious red ruby is flanked by transitional cut diamonds in this three stone ring from the 1940s.
Diamond, Ruby, Platinum
Mid-Century Two-Tone Diamond Engagement Ring
Located in Denver, CO
A transitional-cut diamond measuring approximately 0.22 carat, F color SI1 clarity, shines brilliantly at the center of this vintage mid-century ring accented with four single cut di...
Diamond, 14k Gold, White Gold, Yellow Gold
Mid-Century Diamond and Platinum Engagement Ring
Located in Denver, CO
This stunning mid-century ring is designed around an Old European-cut diamond center stone measuring approximately 0.62 carats, G color SI2 clarity, and flanked by four transitional-...
Diamond, Platinum
20.50 Carat Aqua Diamond Ruby Art Deco Rose Gold Pendant Necklace
Located in Stamford, CT
Retro Art Deco Cats Eye Aqua, diamond and ruby pendant necklace. 20.50 cabochon natural cats eye Aqua with a 14k rose gold bail, accented with 3 transitional cut diamonds and 7 squar...
Aquamarine, Diamond, Ruby, 14k Gold, Rose Gold, Gold
Two Tone Ruby and Diamond Pendant Necklace
Located in Denver, CO
A round red ruby measuring 3mm centers this ornate sunburst pendant encircled by five round transitional cut diamonds and embellished with delicate milgraining and intricate metalwork.
Diamond, Ruby, 14k Gold, White Gold, Yellow Gold
Art Deco Platinum Diamond Solitaire Engagement Ring, Circa 1930
Located in Altrincham, GB
A stunning diamond engagement ring, set with a 0.80 carat transitional cut diamond.
Diamond, Platinum
Mid-Century Two-Tone Diamond Wedding Set
Located in Denver, CO
This classic mid-century wedding set features a round transitional-cut diamond weighing approximately 0.20 carats at its center, presented between two single-cut diamonds.
Diamond, 14k Gold, Yellow Gold, White Gold
Edwardian 1900s Antique 6 Carat Colombian Emerald Diamond 18K Ring Size 7.5
Located in Santa Monica, CA
18K Edwardian 1900s Antique Natural Colombian Emerald Diamond Ring Size 7.5 Rectangular Cut Emerald, 10.8 mm by 11.7 mm by 6.6 mm deep, approximated to be 6.2 Carat, 5.20 Carat if...
Diamond, Emerald, 18k Gold
8.51 CTW Old European Cut Diamond Platinum Vintage Halo Engagement Ring GIA
Located in Philadelphia, PA
Centering an old European cut diamond weighing 6.91 carats - U/V color with VS1 clarity Set with talon prongs with a halo of round brilliant and transitional cut diamonds Weighing ap...
Diamond, Platinum
Vintage Two Tone Gold Ring with Three Stone Diamond Design
Located in Coral Gables, FL
18 karat yellow gold vintage 3 stone ring with engraved flower detail featuring 3 transitional cut diamonds of I1 clarity and H color totaling approximately 0.50 carats.
Diamond, Gold, 18k Gold, Yellow Gold
Art Deco Three-Stone Diamond Engagement Ring
Located in Denver, CO
This late Art Deco engagement ring features a transitional-cut diamond weighing approximately 0.35 carats, G color SI1 clarity, flanked by two Old European-cut diamond side stones.
Diamond, 14k Gold, White Gold
1.05ct Old-European Cut Three-Stone Diamond Retro Flower Ring in 14K Rose Gold
Located in MELBOURNE, AU
This visually striking English retro piece of jewellery is is crafted in 14K Rose Gold with remarkable attention to details: Designed as a flowerhead, centering a vertical cluster ...
Diamond, Rose Gold, 14k Gold
Vintage Emerald Old Cut Diamond White Gold Earrings
Located in Chicago, IL
Majority of the diamonds are old European cut stones with a few old miners and transitional cut diamonds.
Diamond, White Diamond, Emerald, Gold, 14k Gold, White Gold
Art Deco 10.00 Ct Natural Amethyst Diamond 18 KT Ring
Located in Napoli, IT
Natural untreated Amethyst cabochon of gorgeous Purple colour Complemented by line of 16 transitional cut Diamonds for .40 CT G/H VVS/SI adding character and sparkle It measures 16 m...
Amethyst, Diamond, 18k Gold
Art Deco Diamond and Platinum Engagement Ring
Located in Denver, CO
This late Art Deco engagement ring features a round transitional-cut diamond weighing approximately 0.50 carats, GH color and SI2 clarity, secured in an elevated four-prong setting.
Diamond, Platinum
Gubelin sapphire and diamond bombé cocktail ring, circa 1950.
By Gubelin
Located in London, GB
Gubelin sapphire and diamond bombé cocktail ring. Set to centre with one round transitional cut diamond in an open back claw setting with an approximate weight of 0.80 carats, flanke...
Diamond, Sapphire, Platinum
Van Cleef & Arpels Vintage Platinum Diamond Eternity Wedding Band
Located in Great Neck, NY
Stunning Van Cleef & Arpels antique platinum diamond eternity wedding band with transitional cut diamonds.
Diamond, Platinum
An Art-Deco Style 5-Stone Half-Hoop 0.65ct Diamond Ring. English hallmarks.
Located in MELBOURNE, AU
An Art-Deco Style Five-Stone Diamond Ring, Set with 5 round transitional cut diamonds of 0.65ct in total, of very good colour and clarity Total item's weight: 2.9gr.
Diamond, Gold, 18k Gold
Cartier Diamond Platinum Ring and Band Ring
By Cartier
Located in New York, NY
Cartier Diamond Platinum Ring and Band Ring One transitional-cut diamond weighing 1.27 carats, six small round-cut, set in platinum; marked Cartier Band ring made of platinum and s...
Diamond, Platinum
Mid-Century 0.78 CTW Diamond Platinum Vintage Seven Stone Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing 0.65 carat total - H color with VS2 clarity Prong set in a pierced basket and flanked by cathedral shoulders Bead set with rows of singl...
Diamond, Platinum
Art Deco Platinum 1.45 Carat GIA Old European Cut Diamond Engagement Ring
Located in Los Angeles, CA
Set with an additional 6 Transitional Cut diamonds weighing approximately 0.35 carats in total.
Diamond, Platinum
Antique Edwardian Platinum Old Cut Diamond Floral Engagement Ring - GIA
Located in Great Neck, NY
This ring features a gorgeous old transitional cut diamond in the center of an incredible floral Edwardian mounting.
Diamond, Platinum
Mid Century GIA 2.04 carat diamond 14k white gold engagement ring
Located in Beverly Hills, CA
Two transitional cut diamonds, totaling approximately .15 carats in H color and VS clarity, flank the center stone, adding a touch of sparkle that enhances its vintage charm.
Diamond, Gold, 14k Gold, White Gold
Kutchinsky Hand Forged 18K Yellow Gold and 2.80 Carat, Diamond Ring, circa 1970s
By Joseph Kutchinsky
Located in New York, NY
Kutchinsky 18k Yellow Gold and 2.80cts Transitional Cut Diamonds c.1970s For those who see jewelry as art, there is nothing quite like the House of Kutchinsky.
Diamond, Yellow Gold, 18k Gold
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.

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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.