13.58ct Vivid Copper-Bearing Neon Blue-Green Natural Paraiba Tourmaline
Located in New York, NY
Paraiba tourmaline is prized for a phenomenon few gemstones can rival: a copper-bearing chemistry that ignites an unmistakable neon blue-green glow. First discovered in Brazil’s Para...
Paraiba
26.46ct Vivid Neon Blue-Green (Copper-Bearing) Natural Paraiba Tourmaline
Located in New York, NY
Paraiba tourmaline is famed for a color phenomenon found in very few gemstones: a copper-bearing, neon blue-green radiance that appears lit from within. First discovered in Brazil’s ...
Paraiba
15.35ct Vivid Neon Blue-Green (Copper-Bearing) Natural Paraiba Tourmaline
Located in New York, NY
Paraiba tourmaline is celebrated for a phenomenon few gemstones can rival: a copper-bearing, neon blue-green radiance that appears lit from within. First discovered in Brazil’s Paraí...
Paraiba
Demantoid Garnet 0.75 cts Demantoid Gem Madagascar Demantoid Garnet
Located in Chicago, IL
Demantoid Garnet, 0.75 cts Demantoid Gem Madagascar Demantoid Garnet Green Demantoid Garnet, CERTIFIED Demantoid Garnet, Excellent Cut. size 6.90 x 4.80 x 2.80 mm Very very nice c...
Garnet
GIA 5.22ct K SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 5.22 carat oval diamond is available loose and can be mounted in the solitaire setting sh...
Diamond, White Gold
GIA 5.57ct Oval I SI2 Natural Diamond Loose or Mounted Solitaire Ring
By EMD Diamonds
Located in New York, NY
At 13.84 x 9.91 x 6.22 mm and a 1.40 ratio, the oval silhouette offers an impressive spread for its weight-ideal for collectors or those searching to buy a loose diamond or a stateme...
Diamond, White Gold
GIA Certified 5.02ct E SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
With no fluorescence, excellent polish and symmetry, and well-proportioned facets, this stone reads bright and lively across lighting environments. The oval shape maximizes visual s...
Diamond, White Gold
GIA Certified 6.02ct Oval Diamond I VS2 Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
The oval cut offers an elegant elongated silhouette and excellent spread at 14.14 x 10.35 x 6.31 mm with a 1.37 ratio, combining presence and refinement for a classic choice for an e...
Diamond, White Gold
GIA Certified 3.30ct Oval I VS1 Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
With an I color and VS1 clarity, the stone reads beautifully in the face and offers outstanding eye appeal for collectors and engagement buyers seeking a real diamond with impressive...
Diamond, White Gold
GIA Certified Natural 5.51ct K SI1 Oval Diamond Loose or Solitaire Ring Set
By EMD Diamonds
Located in New York, NY
Diamond Details: Certificate: GIA (Gemological Institute of America) Type: Natural Diamond Carat Weight: 5.51 ct Shape: Oval Color Grade: K Clarity Grade: SI1 Fluorescence: None Poli...
Diamond, White Gold
GIA Certified 8.01ct F SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Buy loose diamond or have it set; either way, you acquire a rare, impressive 8.01 carat oval that reads big and beautiful.
Diamond, White Gold
GIA Certified 6.05ct H SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose ; this GIA certified natural 6.05 carat H SI2 oval diamond is available loose and can be mounted in the solitaire rin...
Diamond, White Gold
GIA Certified 5.02ct L VVS2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Offered loose, this GIA certified natural 5.02 carat L color VVS2 oval diamond is Remarkably rare and crafted by nature, delivering pure brilliance and a commanding presence.
Diamond, White Gold
GIA Certified 5.01ct I VVS2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 5.01 carat Oval diamond is available loose and can be mounted in the solitaire ring shown...
Diamond, White Gold
GIA Certified 5.04ct F SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 5.04 carat F SI2 oval diamond is available unmounted and can be mounted in the pictured s...
Diamond, White Gold
GIA Certified 3.02ct Oval Diamond I SI2 Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA-certified natural 3.02ct oval diamond is available loose and can be mounted in the pictured solitaire ring ...
Diamond, White Gold
GIA Certified 3.51ct H SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 3.51 carat oval diamond is available loose and can be mounted in the solitaire ring shown...
Diamond, White Gold
GIA Certified 5.01ct L SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting into the solitaire ring shown is available upon request.
Diamond, White Gold
GIA Certified Natural 8ct Oval Diamond VS1 Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
With an elegant oval silhouette and excellent spread, this loose diamond is perfect for collectors and engagement buyers searching for a high-quality, show-stopping stone.
Diamond, White Gold
GIA Certified 3.01ct I SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 3.01 carat oval diamond is available loose and can be mounted into the solitaire setting ...
Diamond, White Gold
GIA Certified 3.01ct G SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Ideal for collectors and engagement buyers searching for a high-impact loose diamond or a classic center stone for a solitaire setting, this oval delivers elegant spread, lively bril...
Diamond, White Gold
GIA Certified 3.01ct J SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: This GIA certified natural 3.01 carat oval diamond is sold loose and can be mounted into the pictured solitaire ring...
Diamond, White Gold
GIA Certified 3.02ct J SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting into the pictured solitaire ring is available upon request.
Diamond, White Gold
GIA Certified 4.01ct Oval Diamond G VS2 Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose ; this GIA certified natural 4.01 carat Oval diamond can be mounted into the solitaire ring shown in the photos upon ...
Diamond, White Gold
GIA Certified 5.02ct J SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Diamond Details: Certificate: GIA (Gemological Institute of America) Type: Natural Diamond Shape: Oval Carat: 5.02 Color: J Clarity: SI2 Fluorescence: Faint Polish: EX Symmetry: EX D...
Diamond, White Gold
GIA Certified 4.01ct I SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting available upon request.
Diamond, White Gold
GIA Certified 3.01ct H SI1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Unmistakably rare and crafted by nature, this GIA certified natural 3.01 carat oval diamond is a timeless diamond that reads classic and remarkably wearable.
Diamond, White Gold
GIA Certified 4.01ct I VS2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting into the pictured solitaire ring is available upon request.
Diamond, White Gold
GIA Certified 6.33ct E VS1 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting into the pictured solitaire ring is available upon request.
Diamond, White Gold
GIA Certified 3.01ct H SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose; mounting in the shown solitaire ring is available upon request.
Diamond, White Gold
GIA Certified Natural 3.20ct G SI2 Oval Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: This GIA certified natural 3.20 carat G SI2 oval diamond is sold loose and may be mounted into the pictured solitair...
Diamond, White Gold
GIA Certified 5ct Oval J VS2 Natural Diamond Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
Diamond Details: Certificate: GIA (Gemological Institute of America) Type: Natural Diamond Shape: Oval Carat: 5.01 Color: J Clarity: VS2 Polish: EX Symmetry: EX Fluorescence: NONE De...
Diamond, White Gold
GIA Certified 5.42ct Natural Oval I SI2 Loose or Set in Solitaire Ring
By EMD Diamonds
Located in New York, NY
**Save this diamond ❤️ to receive price updates** *Offered loose: this GIA certified natural 5.42 carat Oval diamond is available loose and can be mounted into the solitaire setting ...
Diamond, White Gold
GIA Certified Oval 1.03 Carat Natural Loose Fancy Light Pink VS1 Diamond
Located in Ramat Gan, Tel Aviv District
Kindly notice: This is a loose diamond, it is not mounted on any jewelry item.
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.