1.66 Carat Loose H / VS2 Round Brilliant Cut Diamond GIA Certified
Located in Sherman Oaks, CA
Diamond General Info GIA Report Number: 2183351693 Diamond Cut: Round Brilliant Measurements: 7.72 x 7.64 - 4.59 Diamond Grading Results Carat Weight: 1.66 Color Grade: H Clarity...
Diamond
1.58 Carat Loose D / VS1 Round Brilliant Cut Diamond GIA Certified
Located in Sherman Oaks, CA
Diamond General Info GIA Report Number: 5181451253 Diamond Cut: Round Brilliant Measurements:7.44 - 7.49 x 4.66 mm Diamond Grading Results Carat Weight: 1.58 Color Grade: D Clarity ...
Diamond
Natural 1.61ct Gia Fancy Yellow I1 Round Brilliant Cut Loose Diamond
Located in Houston, TX
Might show minor signs of wear. One (1) round brilliant cut natural diamond: Measurements: 7.28mm - 7.47mm in diameter x 4.63mm in depth.
Diamond
1.50 Carat Loose H / VVS2 Round Brilliant Cut Diamond GIA Certified
Located in Sherman Oaks, CA
Diamond General Info GIA Report Number: 6183391854 Diamond Cut: Round Measurements: 7.42 x 7.34 - 4.47 mm Diamond Grading Results Carat Weight:1.50 Color Grade: H Clarity Grade: ...
Diamond
TJD Certified Canadian Colourless 0.54 Carat Round Brilliant Cut Loose Diamond
By TJD
Located in New York, NY
Weight: 0.54ct Cut: Round Brilliant Color: E Clarity: VS1 Polish: EX Symm: EX ...
Diamond
TJD Certified Canadian Colourless 0.55 Carat Round Brilliant Cut Loose Diamond
By TJD
Located in New York, NY
Weight: 0.55ct Cut: Round Brilliant Color: E Clarity: VS1 Polish: EX Symm: Ver Good ...
Diamond
Loose Diamond - Round Brilliant 1.83ct GIA I I1 Triple Excellent Solitaire
Located in Greensboro, NC
Carat(s): 1.83ct Cut: Round Brilliant Color: I Clarity: I1 Stone Note: Triple Excellent Certified by: GIA Report Number: 6237455857 Condition: New
Diamond
TJD Certified Canadian Colourless 0.63 Carat Round Brilliant Cut Loose Diamond
By TJD
Located in New York, NY
Weight: 0.63ct Cut: Round Brilliant Color: E Clarity: VVS2 Polish: EX Symm: Ver Good ...
Diamond
Natural Loose 0.44ct Round Brilliant Fancy Gray Diamond VS Bluish GIA Certified
Located in New York, NY
Understated yet unforgettable, this 0.44 carat Round Brilliant Fancy Gray diamond offers a refined, contemporary beauty that stands apart from traditional white stones. Fancy Gray is...
Diamond
GIA Certified 6.82 Carat, G Color, VS1 Clarity, Round Brilliant Loose Diamond
Located in Miami, FL
GIA Certified 6.82 Carat, G Color, VS1 Clarity, Round Brilliant Cut Loose Natural Diamond. Untreated.
Diamond, White Diamond
GIA Certified 4.10 Carat Round Brilliant Cut D/VS2 Natural Diamond Loose Stone
Located in Miami, FL
GIA-certified 4.10 carat natural round brilliant diamond in D color and VS2 clarity — the highest color grade available — offered as a loose investment-grade stone with GIA report nu...
Diamond
GIA Certified 4.03 Carat Round Brilliant Diamond D Color I1 Clarity Loose Stone
Located in Miami, FL
This 4.03 carat GIA-certified loose diamond features a round brilliant cut with icy D color and natural I1 clarity inclusions, making it an impressive choice for a standout solitaire...
Diamond
GIA 1.62 Carat Loose Round Brilliant Cut Natural Diamond I Color VS2 Clarity
Located in Carmel By The Sea, CA
Description Offered is one (1) natural round brilliant cut diamond accompanied by a newly issued GIA Natural Diamond Dossier Report #5232936175 dated April 23, 2026.
Diamond
GIA Certified 4 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Diamond
Located in Miami, FL
GIA Certified 4.00 Carat, D Color, VS2 Clarity, Round Brilliant Cut Loose Natural Diamond. Untreated.
Diamond, White Diamond
Loose Diamond, Round Brilliant Cut 1.30 Carat GIA S-T VS2 Solitaire
Located in Greensboro, NC
Weight: 1.30ct Cut: Round Brilliant Color: S - T Light Brown Clarity: VS2 Dimensions (mm): 6.85 - 6.91 x 4.50 GIA Report Number: 6157215331 Condition: New Please check out...
Diamond
Loose Diamond, Round Brilliant Cut 1.26 Carat GIA W-X VVS2 Solitaire
Located in Greensboro, NC
Weight: 1.26ct Cut: Round Brilliant Color: W - X Clarity: VVS2 Dimensions (mm): 6.76 - 7.01 x 4.22 GIA Report Number: 1126601714 (laser inscribed only) Condition: New Ple...
Diamond
1.53ct Round Brilliant Cut Natural Diamond GIA Certified Loose Excellent E SI2
Located in San Diego, CA
Beautiful 1.53ct round brilliant cut diamond that has been certified by GIA #168604401. See the GIA certificate in the image gallery. Design your own jewelry piece with this diamond...
Diamond
TJD IGI Certified 1.04Carat Round Brilliant Cut Loose Diamond J Color IF Clarity
By TJD
Located in New York, NY
Weight: 1.04ct Cut: Emerald Cut Color: J Clarity: IF Polish: EX Symm: EX ...
Diamond
0.41 Carat IGI Certified Natural Diamond Round Brilliant
Located in רמת גן, IL
0.41 Carat IGI Certified Natural Diamond Round Brilliant Experience the magnificent brilliance and exquisite purity of this spectacular 0.41-carat round brilliant-cut natural diamon...
Diamond
0.52 Carat IGI Certified Natural Diamond Round Brilliant
Located in רמת גן, IL
0.52 Carat IGI Certified Natural Diamond Round Brilliant Featuring the pristine scintillation and eternal allure of this magnificent 0.52-carat round brilliant-cut natural diamond. ...
Diamond
0.51 Carat IGI Certified Natural Diamond Round Brilliant
Located in רמת גן, IL
0.51 Carat IGI Certified Natural Diamond Round Brilliant Indulge in the breathtaking sparkle and unmatched clarity of this dazzling 0.51-carat round brilliant-cut natural diamond. P...
Diamond
0.67 Carat IGI Certified Natural Diamond Round Brilliant
Located in רמת גן, IL
0.67 Carat IGI Certified Natural Diamond Round Brilliant Indulge in the dazzling radiance and timeless sophistication of this remarkable 0.67-carat round brilliant-cut natural diamo...
Diamond
Sparkling 0.70 carat Round Cut Brilliant Diamond
Located in רמת גן, IL
Natural cut Round diamond in a .70 carat H VVS1 Excellent cut. This diamond comes with GIA Certificate and laser inscription number. This exquisite diamond is a dazzling .70 carat H...
Diamond
GIA Certified 7.20ct Round Brilliant Champagne Yellow Diamond, VS2
Located in Tucker, GA
This Desert diamond is the current popular trend in 2026. It is 7.20 Carats with a Round Brilliant cut, VS2 quality, and a rare color grade of U-V.
Diamond
Brilliant 1.52ct Natural Round-Shaped Diamond - IGI Certified
Located in רמת גן, IL
Brilliant 1.52ct Natural Round-Shaped Diamond - IGI Certified This exquisite 1.52ct round brilliant diamond radiates exceptional sparkle and brilliance. A stunning investment or cen...
Diamond
1pc. Dazzling 4.42 Carat Round Brilliant Natural Diamond
Located in רמת גן, IL
This stunning diamond is sure to turn heads. It features a sparkling 4.42 carat round brilliant cut diamond with an E color, Flawless clarity, and EX cut grade. The diamond comes wit...
Diamond
1pc. Dazzling 1.02 Carat Round Brilliant Natural Diamond
Located in רמת גן, IL
This stunning 1.02 carat D VVS2 round brilliant cut natural diamond is a truly rare and special gem. With its colorless (D) grade and very, very slightly included (VVS2) clarity, thi...
Diamond
$1,596Sale Price|20% Off
GIA Certified 0.62CT Round Brilliant Fancy Grey Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: 53328 Stone Shape: Round Diamond Weight: 0.62CT Clarity: SI1 Color: Very Light Grey Cut: Excellent Measurements: 5.43 - 5.52 x 3.18mm Symmetry: None Polish:...
Yellow Diamond
1pc Sparkling 2 Carat Round Brilliant Natural Diamond
Located in רמת גן, IL
This stunning 2 carat D Flawless round brilliant cut natural diamond is a truly rare and special gem. With its colorless (D) grade and flawless (FL) clarity, this diamond is the epit...
Diamond
Shiny 0.92 carat natural cut round brilliant diamond
Located in רמת גן, IL
One shiny natural cut round brilliant diamond in a 0.92 carat D IF 3EX cut, polish and symmetry with ideal cut with full of sparkles. this diamond comes with IGI Certificate laser, i...
Diamond
$16,000Sale Price|20% Off
Rare & Unique 1.84Ct Round Brilliant Orange Diamond - GIA Certified!
Located in Ramat Gan, IL
Exceptional 1.84 Carat Round Brilliant Fancy Deep Yellow-Orange Diamond – GIA Certified A rare and mesmerizing treasure, this 1.84 carat Round Brilliant Cut Diamond exhibits a strik...
Diamond
$1,200Sale Price|20% Off
GIA Certified 0.10ctw Fancy Orangy Pink Natural Round Loose Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC58606 Stone Shape: Round Diamond Weight: 0.10ctw Fancy Color: Fancy Orangy Pink Cut: Round Brilliant Symmetry: Good Polish: Good Fluorescence : None Measur...
Pink Diamond
GIA Certified 3.54 Carat Round Cut G/VS2 Loose Natural Diamond
Located in Miami, FL
GIA-certified loose natural diamond featuring 3.54 carats in round brilliant cut with G color and VS2 clarity.
Diamond
1pc. Glittering 2.07 Carat Round Brilliant Natural Diamond
Located in רמת גן, IL
Carat Weight: 2.07 carats Color: F Clarity: VS1 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: None GIA Report Number: 6465614524 SKU: DSPV-185709
Diamond
Brilliant 1.41ct Pair of Round-Shaped Diamonds - GIA Certified
Located in רמת גן, IL
Brilliant 1.41ct Pair of Round-Shaped Diamonds - GIA Certified A dazzling duo of perfectly matched round diamonds totaling 1.41 carats, these stones embody harmony and refined luxur...
Diamond
Brilliant 1.12ct Ideal Cut Round Natural Diamond - GIA Certified
Located in רמת גן, IL
Brilliant 1.12 ct Ideal Cut Round Natural Diamond - GIA Certified Discover the pinnacle of diamond perfection with this stunning 1.12-carat round brilliant diamond. With its GIA ce...
Diamond
$2,900Sale Price|20% Off
Gia Certified 1.50 Carat G Vvs2 Round Brilliant Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56426 Stone Shape: ROUND BRILLIANT Diamond Weight: 1.50 CT Clarity: VVS2 Color: G Cut: Excellent Measurements: 7.26 X 7.32 X 4.55 mm Depth %: 62.30% Table %...
White Diamond
0.27CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.27 CT Color: D Clarity: SI2 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscription...
Diamond
1pc. Dazzling 1.95 Carat Round Brilliant Cut Natural Diamonds
Located in רמת גן, IL
This stunning diamond is sure to turn heads. It features a sparkling 1.95 carat round brilliant cut diamond with a D color, IF clarity, and 3EX cut grade. The diamond comes with a GI...
Diamond
1pc. Glittering 2.08 Carat Round Brilliant Cut Natural Diamonds
Located in רמת גן, IL
This stunning diamond is sure to turn heads. It features a sparkling 2.08 carat round brilliant cut diamond with a D color, FL clarity, and 3EX cut grade. The diamond comes with a GI...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23CT Color: D Clarity: VS1 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: None Inscription : IGI ...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23CT Color: D Clarity: VS1 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: None Inscription : IGI ...
Diamond
1.30CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 1.30CT Color: I Clarity: VVS 2 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: None Inscription IGI:...
Diamond
0.16CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.16 CT Color: D Clarity: VVS2 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscriptio...
Diamond
0.26CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.26 CT Color: D Clarity: VS2 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscription...
Diamond
0.23CT IGI Certified Round Brilliant.
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23CT Color: D Clarity: VVS2 Cut: Excellent Polish: Very Good Symmetry: Excellent Fluorescence: Very Slight Inscriptio...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23CT Color: E Clarity: SI1 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: Very Slight inscription...
Diamond
0.21CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.21 CT Color: D Clarity: VS1 Cut: Excellent Polish: Very Good Symmetry: Excellent Fluorescence: None Laser inscription...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23 CT Color: D Clarity: SI1 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscription...
Diamond
0.15CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.15 CT Color: D Clarity: VVS2 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscriptio...
Diamond
0.15CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.15 CT Color: D Clarity: VVS2 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: None Laser inscriptio...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23 CT Color: D Clarity: VS1 Cut: Very Good Polish: Excellent Symmetry: Excellent Fluorescence: Slight Laser inscripti...
Diamond
0.28CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.28 CT Color: D Clarity: VS1 Cut: Excellent Polish: Excellent Symmetry: Excellent Fluorescence: Very Slight Laser insc...
Diamond
0.23CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.23 CT Color: D Clarity: VVS2 Cut: Very Good Polish: Very Good Symmetry: Excellent Fluorescence: None Laser inscriptio...
Diamond
0.24CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.24 CT Color: D Clarity: VS2 Cut: Very Good Polish: Very Good Symmetry: Excellent Fluorescence: None Laser inscription...
Diamond
0.17CT IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 0.17 CT Color: D Clarity: VVS2 Cut: Very Good Polish: Very Good Symmetry: Excellent Fluorescence: None Laser inscriptio...
Diamond
3.05ct IGI Certified Round Brilliant
Located in kOWLOON, HK
Natural Diamond graded by IGI. Shape: Round Brilliant Weight: 3.05 CT Color: D Clarity: VS1 Cut: Good Polish: Excellent Symmetry: Very good Fluorescence: Sligh...
Diamond
PRICE TO SELL, 1.12ct Round Brilliant Cut Natural Diamond
Located in Great Neck Plaza, NY
1.12 ct round brilliant cut loose natural diamond *Free shipping within the US
Diamond, 14k Gold, White Gold
$2,132Sale Price|20% Off
Antique 1.16ct Round Brilliant White Diamond, SI Clarity, M Color
Located in New York, NY
ITEM DESCRIPTION ID #: 56813 Stone Shape: Round Brilliant Diamond Weight: 1.16 CT Clarity: SI Color: M Measurements 6.50 x 6.55 x 4.12 mm Our Price: $2665.40 These genuine diamonds...
White Diamond
$7,534Sale Price|20% Off
1.00 Carat Round Brilliant GIA Certified H Color Vs2 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56706 Stone Shape: ROUND BRILLIANT Diamond Weight: 1.00ct Clarity: VS2 Color: H Cut: Good Measurements: 6.19 - 6.24 x 4.05 mm Depth %: 65.1% Table %:57% Sy...
Diamond, White Diamond
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.
Are you shopping for diamonds and other loose gemstones to create your own custom jewelry?
Why might you purchase a diamond or gemstone “loose” — that is, on its own, not mounted in a piece of jewelry? Perhaps you’re a connoisseur looking to acquire a unique investment. The scarcity of high-quality colored diamonds, for instance, especially pink diamonds, means that their value increases over time; the same is true of rare Kashmir sapphires and Burmese rubies. Far rarer than diamonds, Paraiba tourmaline, discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.
A more common scenario would be that you’re hoping to create a very special piece of custom jewelry, such as an engagement ring or a milestone-birthday present, and want to personally select the most beautiful, unusual, or ultra-rare stone you can find and afford. Doing so adds to the romance and substance of the gift and can be a part of the story told as the jewel is passed from generation to generation.
If this sounds like you, read on for tips on becoming one of the world’s savviest gem hunters.
Educate yourself: When buying any piece of gem-set fine jewelry, you should familiarize yourself with the factors that determine a stone’s price. This will enable you to streamline your search for the perfect gem and have intelligent, productive conversations with sellers.
There is a wealth of information online, such as our diamond-buying guide and this overview of colored gemstones for engagement rings. The buying guides of the Gemological Institute of America (GIA), searchable by stone type, are also a widely trusted source for consumers venturing into the world of diamonds and gems for the first time.
Vet your vendor: If you peruse 1stDibs with any regularity, you know there is no shortage of vendors who deal in top-quality loose gemstones. (Read about our vetted sellers.) Finding a trustworthy, established dealer may be as easy as getting a recommendation from friends or family. And, although it may sound obvious, it pays to Google your candidates — and consult customer reviews — before making contact.
Harakh Mehta, designer and founder of the Mumbai, India–based fine-jewelry brand Harakh, has an innate understanding of proper client relations, especially when the customer is in unfamiliar territory. “Start chatting with the dealer, get to know them better," he says. "It’s very important to establish a comfort level. We never push a sale, as we want it to be a carefully considered purchase. So, if the client is not in a rush, we do it over a few virtual meetings or phone calls.”
Request documentation: The best dealers go to great lengths to furnish clients with documents verifying the quality rating, natural origin and provenance of a stone — showing, for example, that loose emerald hails from the famous Muzo mine in Colombia — and disclosing any treatments applied to enhance its appearance. (And who doesn't love emerald jewelry? The most valuable emeralds are the ones that have a deep bluish-green to true green color and no visible inclusions.)
If no grading report is available for a stone you are interested in, the dealer should be able to provide an authenticity document, such as an appraisal or info sheet, that has been signed by an in-house gemologist or professional appraiser. Google those names, too, for extra peace of mind.
Ask for videos and visuals: When transacting with a gem dealer online, you should always request real-time videos and photographs, since professional photos of a stone, usually on a white background, have likely been retouched for optimal presentation.
Read more about how to buy loose gemstones and find your dream gems today on 1stDibs.