Brilliant 0.70ct Ideal Cut Cut-Cornered-Rectangular-Shaped Diamond - GIA
Located in רמת גן, IL
Brilliant 0.70ct Ideal Cut Cut-Cornered-Rectangular-Shaped Diamond - GIA Certified This exceptional 0.70-carat cut-cornered rectangular diamond is a true gem, perfect for any jewelr...
Diamond
Luminous 1.01ct Double Excellent Ideal Cut Cut-Cornered Rectangular Diamond
Located in רמת גן, IL
Luminous 1.01ct Double Excellent Ideal Cut Cut-Cornered Rectangular - Shaped Diamond - GIA Certified Elevate your jewelry collection with this exquisite 1.01-carat cut-cornered rect...
Diamond
14K White Gold Natural Radiant Cut Diamond Ring 1.01ct F/SI1 GIA Twist Pave
Located in Carmel By The Sea, CA
14K White Gold Radiant Cut Diamond Ring 1.01ct F/SI1 GIA, Twist Pave Shank, Size 7 Description: Crafted in 14-karat white gold, this engagement ring contains one cut-cornered rectan...
Diamond, 14k Gold, White Gold
$45,600Sale Price|20% Off
Tiffany & Co. 2.03 Carat True Radiant Brilliant Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. 2.03 Carat True™ Cut Radiant Brilliant Diamond Engagement Ring Offered here is a stunning Tiffany & Co. engagement ring featuring a 2.03 carat Tiffany True™ Cut Corner...
Diamond, White Diamond, Platinum
$128,000Sale Price|20% Off
Tiffany & Co. 3.26 Carat True Cut Diamond Platinum Solitaire Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
True® solitaire engagement ring, crafted in platinum and centered with a Tiffany 3.26 carat True™ Cut cornered square radiant brilliant cut diamond.
Diamond, White Diamond, Platinum
0.50 Carat Fancy Intense Pink Diamond Double Halo Ring in 18K Gold GIA Certified
Located in New York, NY
The centerpiece features a 0.50 carat round-cornered rectangular (radiant) cut natural pink diamond, GIA certified with an Intense Pink color grade, Even distribution, and I1 clarity.
Diamond, Pink Diamond, 18k Gold
Peter Suchy EGL 2.06 Carat Fancy Yellow Diamond Halo Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Set in an 8 sided rectangular bead set top with round full cut diamonds in a split shank style setting with diamonds along each shoulder. 1 cut corner Radiant cut diamond 2.06cts, ...
Diamond, Yellow Diamond, Platinum
GIA Certified 1.14 Carat Brown - Green Yellow Diamond 18 KT Gold Engagement Ring
Located in London, GB
This stunning GIA Certified 1.14 Carat Natural Fancy Dark Brown-Greenish Yellow Radiant Cut - Cornered rectangular modified Diamond situated in the center of the ring featuring 0.80 ...
Brown Diamond, Diamond, Yellow Diamond, White Diamond, Gold, 18k Gold, W...
Spectra Fine Jewelry GIA Certified 3.02 Carat Fancy Brown-Pink Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
The cut-cornered rectangular radiant cut diamond is surrounded by a similarly shaped rose gold halo, set with pink pavé diamonds that continue part way down the band.
Diamond, Pink Diamond, 18k Gold, Rose Gold, Yellow Gold
Peter Suchy GIA Certified 1.42 Carat Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Gorgeous 1.42 carat natural GIA certified radiant cornered cut diamond engagement ring. At the center of this three-stone setting is a brownish yellow rectangular cut 1.42ct diamond.
Diamond, Yellow Diamond, Brown Diamond, Platinum
GIA Certified 2.02 Carat Cut-Cornered Rectangular Diamond Pendant
Located in Central, HK
This item is another perfect gift for her everyday wear or special occasions. The pendant features a H Colour Internally Flawless 2.02 carat cut-cornered rectangular shape diamond, a...
White Diamond, Platinum
GIA Certified "Radiant" Cut 5.07 Carat Platinum Ring
Located in Surfside, FL
GIA certified cut-cornered rectangular modified brilliant "RADIANT" cut diamond 5.07 carat ( I color, VS2 clarity) ring set in platinum.
Platinum
Tiffany & Co. Diamond Platinum Lucida Solitaire Engagement Ring
By Tiffany & Co.
Located in Narberth, PA
The cut cornered square diamond sparkles radiantly, with a unique arrangement of facets that is exclusive to the Tiffany & Co.
Diamond, Platinum
Stunning 1.01ct Double Excellent Ideal Cut Cut-Cornered Rectangular Diamond
Located in רמת גן, IL
Stunning 1.01ct Double Excellent Ideal Cut Cut-Cornered Rectangular Diamond Embrace the magnificence of our 1.01-carat cut-cornered rectangular diamond, an epitome of perfection and...
Diamond
Fascinating 0.90ct Ideal Cut Cut-Cornered Rectangular-Shaped Diamond - GIA
Located in רמת גן, IL
Fascinating 0.90ct Ideal Cut Cut-Cornered Rectangular-Shaped Diamond - GIA Certified This elegant 0.90-carat cut-cornered rectangular diamond offers a timeless blend of sophisticati...
Diamond
Captivating 1.51ct Ideal Cut Cut-Cornered Rectangular - Shaped Diamond - GIA
Located in רמת גן, IL
Captivating 1.51ct Ideal Cut Cut-Cornered Rectangular - Shaped Diamond - GIA Certified This exquisite 1.51-carat cut-cornered rectangular diamond showcases a captivating color grade...
Diamond
Lovely 2.02ct Double Excellent Ideal Cut Cut Cornered Rectangular Shaped Diamond
Located in רמת גן, IL
Exquisite 2.02ct Double Excellent Ideal Cut Cut Cornered Rectangular-Shaped Diamond - GIA Certified This extraordinary 2.02-carat cut-cornered rectangular diamond is a true testamen...
Diamond
Exceptional 1.43ct Ideal Cut Pair of Cut-Cornered Rectangular-Shaped Diamond
Located in רמת גן, IL
Exceptional 1.43ct Ideal Cut Pair of Cut-Cornered Rectangular-Shaped Diamond - GIA Certified Introducing an exquisite pair of cut-cornered rectangular diamonds, with a total carat w...
Diamond
Magnificent 1.00ct Cut-Cornered Rectangular-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Magnificent 1.00ct Cut-Cornered Rectangular-Shaped Diamond - GIA Certified Presenting an exquisite pair of cut-cornered rectangular diamonds, totaling 1.00-carat.These diamonds are ...
Diamond
3.01 Carat Radiant Cut Diamond Ring
Located in San Francisco, CA
Gorgeous Ring Features One 3.01ct Cut Corner Rectangular Modified Brilliant (Radiant Cut) Diamond graded I color and SI1 clarity by the European Gemological Laboratory.
Diamond, Platinum
Brilliant 1.02ct Double Excellent Ideal Cut Cut Cornered Rectangular-Shaped Diam
Located in רמת גן, IL
Brilliant 1.02ct Double Excellent Ideal Cut Cut Cornered Rectangular-Shaped Diamond - IGI Certified Experience the brilliance of this stunning 1.02-carat radiant cut diamond, featur...
Diamond
3.01 Carat GIA Certified K/SI1 Radiant Cut Diamond Engagement Ring by Neil Lane
By Neil Lane
Located in Los Angeles, CA
Contemporary 3.01 Carat Cut-Cornered Rectangular Mixed Cut "Radiant" Diamond Ring by Neil Lane composed of platinum.
Diamond, Platinum
GIA-Certified 7.27 Carat Radiant-Cut Diamond Ring with 0.75 Carat Side Trillions
Located in Sherman Oaks, CA
This important ring, made in 2009, features a very slightly elongated, cut-cornered square (i.e., Radiant) diamond prong-set between two trillions in a handmade platinum mounting.
Diamond, White Diamond, Platinum
3.10 Carat Radiant Diamond 18 Karat White Gold Engagement Ring
Located in Scottsdale, AZ
Designer: custom design Material: 18k white gold GIA Cert #: 6127478348 Center Stone: cut-cornered square modified “radiant” 3.10 carat diamond Color: H Clarity: VS1 Diamonds: 18 rou...
Diamond, 18k Gold, White Gold
Sold
H 0.29 in W 0.26 in D 0.2 in
Loose Diamond, 2.02ct, GIA Certified Cut-Cornered Rectangular Modified Brilliant
Located in Vienna, VA
Loose Diamond, 2.02ct, GIA Certified, Cut-Cornered Rectangular Modified Brilliant Cut Loose Cut-Cornered Rectangular Modified Brilliant Cut GIA Certified Weight: 2.02ct Clarity: SI1...
Diamond
$78,400Sale Price|20% Off
Tiffany & Co. Soleste Platinum Cushion Diamond Double Halo Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Soleste Platinum Cushion Diamond Double Halo Engagement Ring An iconic Tiffany & Co. Soleste engagement ring crafted in platinum, featuring a dazzling cushion-cut diam...
Diamond, White Diamond, Platinum
GIA Certified Tiffany & Co. Emerald Cut Diamond Engagement Ring 1.59ct E/VS1
By Tiffany & Co.
Located in Mayfair, London, London
A stunning platinum diamond single stone ring by Tiffany & Co. The solitaire features an emerald cut diamond weighing 1.59ct, E colour and VS1 clarity set in a four prong mount. The ...
Diamond, Platinum
Tiffany & Co. Platinum Cushion Cut Diamond Soleste Ring 1.55ct G/VS1
By Tiffany & Co.
Located in Mayfair, London, London
A scintillating platinum diamond engagement ring by Tiffany & Co. from the Soleste collection. The ring is set to the centre with a gorgeous cushion cut diamond weighing 1.55ct, G co...
Diamond, Platinum
$75,237Sale Price|20% Off
GIA Certified 6.02 Carat Marquise Shape Fancy Light Yellow Diamond Cocktail Ring
By Joke Quick
Located in Antwerp, BE
Experience exceptional Belgian high jewellery craftsmanship with this rare, one-of-a-kind ring, designed by jewellery artist Joke Quick. Crafted in 18K yellow and rose gold, the piec...
Diamond, Yellow Diamond, Pink Diamond, 18k Gold, Rose Gold, Yellow Gold
1938 Ring natural Emerald Diamonds solid 18K White Gold ØUS5.75 / 1.9 gr
By GD&Co
Located in SE
Elegant Emerald and Diamonds Ring with curved band in solid 18ct White Gold with bezel set natural emerald cut Emerald stone 4.5 mm x 4 mm x 3.2 mm deep / ca. 0.5 ct of vivid Green...
Diamond, Emerald, 18k Gold, White Gold
Tiffany & Co. Legacy Cushion Diamond 1.33 Tcw Halo Engagement Ring Platinum
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. LEGACY Cushion Diamond Engagement Ring Style: Halo Ref. number: 24971589/J10100317 Metal: Platinum PT950 Size: 6 TCW: 1.33 tcw Main Diamond: Cushion Modified Bri...
Diamond, Platinum
Tiffany & Co. Round Brilliant Diamond 1.22 cts I VS1 Platinum Engagement Ring
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Round Brilliant Diamond Solitaire Classic Engagement Ring Style: 6-Prong Solitaire Ref. number: 33402309 Metal: Platinum Pt950 Size / Measurements: 4.75 - sizable M...
Diamond, Platinum
Tiffany & Co. Novo 1.47 Tcw Cushion Diamond Eng Ring Pave Diamond Platinum Band
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co NOVO Cushion-Cut Engagement Ring with Pave Diamond Platinum Band GIA: 2221781006 Metal: Platinum PT950 Size: 5.5 sizable TCW: 1.47 tcw Main Diamond: Cushion Cut Dia...
Diamond, Platinum
TIFFANY & Co. Soleste Platinum Half Eternity Diamond Band Ring 4.5
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Soleste Platinum Half Circle Diamond Band Ring 4.5 Metal: Platinum Size: 4.5 Band Width: 2mm Diamond: round brilliant diamonds Hallmark: ©TIFFANY&Co. Pt950 Condition: ...
Diamond, Platinum
TIFFANY & CO Round Diamond 1.60 cts G VS2 Solitaire Engagement Ring Certificate
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co Diamond Solitaire Engagement Ring Style: Solitaire 6-Prong T&C Diamond Certificate: 31545102/O02200084 Metal: Platinum. PT950 Size: 6 sizable Main Diamond: Round Brillia...
Diamond, Platinum
GIA Certified 3.95 Carat Natural Pink Sapphire Ring in Platinum
Located in Palm Beach, FL
GIA Certified 3.95 Carat Natural (No Heat) Pink Sapphire Ring. Center sapphire is cushion cut. Two side half-moon-shaped diamonds totaling 0.64 carat; clarity VVS2-VS1, color H-I. Ri...
Diamond, Pink Sapphire, Platinum
Tiffany & Co. 1.01 Carats Cushion Cut Diamond Engagement Ring & Wedding Band Set
By Tiffany & Co.
Located in New York, NY
A beautiful pair of Tiffany & Co. wedding rings, showcasing a 1.01 carats cushion cut diamond with H color and VS1 clarity, set on a four prong setting. Accented by a row of round br...
Diamond, Platinum
J. Birnbach GIA Certified 2.30 Carat F VVS2 Radiant Cut Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
This exquisite platinum three-stone ring showcases a stunning 2.30 carat radiant cut diamond, certified by GIA as F color and VVS2 clarity. The center diamond’s crisp facets and exce...
Diamond, Platinum
Tiffany & Co. Novo 1.46 Carat Diamond Solitaire Engagement Ring Set in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Ring Size: 6 This breathtaking Tiffany & Co. Novo diamond solitaire engagement ring is the epitome of timeless elegance and sophistication. Set in luxurious platinum, this ring feat...
Diamond, White Diamond, Platinum
Vintage GIA Colorless 2.06ctw Old European Diamond Flower Cluster Platinum Ring
Located in New York, NY
Vintage GIA Colorless 2.06ctw Old European Diamond Cocktail Flower Cluster Platinum Ring. This breathtakingly shimmering classic Edwardian style flower-shaped cluster, composed of 12...
Diamond, Platinum
Tiffany & Co. 1.74 Carat Diamond Knife Edge Engagement Ring
By Tiffany & Co.
Located in Bethesda, MD
The ring features a center brilliant cut diamond weighing 1.74 carats. The diamond is H color and VS1 clarity. All Tiffany & Co rings are pre-owned and sold with authentic Tiffany & ...
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.