0.42ct Green Diamond - Natural Loose Fancy Light Green Diamond Cushion GIA Real
Located in New York, NY
ITEM SPECIFICATION DIAMOND INFORMATION Item Stock Number:4432567765 Retail Value : $12,500 Certificate Number:GIA Shape:Cushion Carat Weight:0.42ct Measurements: 4.39×4.11×2.60 Col...
Diamond
Green Diamond - 0.05Ct Natural Loose Fancy light Blue Green Color GIA Oval
Located in New York, NY
ITEM SPECIFICATION DIAMOND INFORMATION Retail Price – $2875.00 Item Stock Number – 262147093742 Shape – Oval Weight – 0.05 ct. Color – Fancy Light Bluish Green Clarity – VS1 Cut Gra...
Diamond
Natural Loose 0.37ct Fancy Grayish Yellowish Green Heart Diamond VVS2
Located in New York, NY
Offered for resale is a GIA-graded natural colored diamond with a distinctive heart silhouette. GIA Report Number 5231868044 confirms this stone as a 0.37 carat Heart Modified Brill...
Diamond
Natural Loose 0.37ct Fancy Grayish Yellowish Green Heart Diamond VVS2
Located in New York, NY
Offered for resale is a GIA-graded natural colored diamond with a distinctive heart silhouette. GIA Report Number 5231868044 confirms this stone as a 0.37 carat Heart Modified Brill...
Diamond
Chameleon Diamond - 1.82ct Natural Loose Fancy Green Yellow HeartGIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $15,900 Item Stock Number - CH59764763722 Certificate Number - GIA 6522012706 Shape - Heart Carat Weight - 1.82ct Measurements - 7.20 x 8.01 x 4.2...
Diamond
1.36 Carat Very Light Green VVS2 Round Brilliant Natural Diamond — GIA Certified
By Ajami Diamonds
Located in Ramat Gan, IL
This exquisite 1.36 carat Natural Very Light Green Round Brilliant Diamond is certified by GIA and displays a rare, naturally formed green hue. With an impressive VVS2 clarity grade,...
Diamond
Chameleon Diamond - 0.27ct Natural Loose Fancy Green Chamelon VVS1 GIA Cushuion
Located in New York, NY
DIAMOND INFORMATION Retail Price - $8,500 Item Stock Number - CH6345187251 Certificate Number - GIA 1232807278 Shape - Cushion Carat Weight - 0.27ct Measurements - 3.72 x 3.70 x 2.3...
Diamond
Chameleon Diamond - 1.02ct Natural Loose Fancy Green Yellow Marquise GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,900 Item Stock Number - CH59764763720 Certificate Number - GIA 2145584899 Shape - Marquise Carat Weight - 1.02ct Measurements - 11.30 x 5.27 ...
Diamond
Chameleon Diamond - 3.01ct Natural Loose Fancy Yellow Green Cushion GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $28,900 Item Stock Number - CH59764763727 Certificate Number - GIA 5221751659 Shape - Cushion Carat Weight - 3.01ct Measurements - 11.30 x 6.60 x ...
Diamond
Chameleon Diamond - 0.27ct Natural Loose Fancy Green Chamelon VVS1 GIA Cushuion
Located in New York, NY
DIAMOND INFORMATION Retail Price - $8,500 Item Stock Number - CH6345187251 Certificate Number - GIA 1232807278 Shape - Cushion Carat Weight - 0.27ct Measurements - 3.72 x 3.70 x 2.3...
Diamond
Chameleon Diamond - 1.27ct Natural Loose Fancy Green Yellow Heart GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,900 Item Stock Number - CH59764763719 Certificate Number - GIA 6237430852 Shape - Heart Carat Weight - 1.27ct Measurements - 5.94 x 6.79 x 3.9...
Diamond
Chameleon Diamond - 2.56ct Natural Loose Fancy Yellow Green Heart GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $28,900 Item Stock Number - CH59764763728 Certificate Number - GIA 2296259726 Shape - Heart Carat Weight - 2.56ct Measurements - 7.92 x 9.07 x 5.3...
Diamond
Chameleon Diamond - 1.27ct Natural Loose Fancy Green Yellow Heart GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,900 Item Stock Number - CH59764763719 Certificate Number - GIA 6237430852 Shape - Heart Carat Weight - 1.27ct Measurements - 5.94 x 6.79 x 3.9...
Diamond
Yellow Diamond 2.00ct Natural Loose Fancy Light Green Yellow GIA SI2
Located in New York, NY
- All Diamonds are natural and certified - Free expedited shipping Main Stone Name: Natural Diamonds Main Stone Weight: 2 ct. Main Stone Clarity: SI2 Main Stone Shape: Cushion ...
Yellow Diamond
GIA Radiant 6.17ct. Natural Loose F. Grayish Yellowish Green VVS2 Diamond
Located in Ramat Gan, Tel Aviv District
GIA Report #2165887491 GIA Radiant 6.17 Carat Natural Loose Fancy Grayish Yellowish Green VVS2 Diamond Color: Natural Fancy Grayish Yellowish Green Shape and Cut: Radiant Cut Car...
Diamond
Chameleon Diamond - 0.71ct Natural Loose Fancy Green Chamelon Color GIA Pear VS1
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,500 Item Stock Number - CG43637275483 Certificate Number - GIA 2466634998 Shape - Pear Carat Weight - 0.71ct Measurements - 7.06 x 4.49 x 3.02...
Diamond
Chameleon Diamond 1.01ct Natural Loose Fancy Yellow Green Color Pear GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $18,900 Item Stock Number - CG316537248553 Certificate Number - GIA 2235298140 Shape - Pear Carat Weight - 1.01ct Measurements - 8.95 x 5.39 x 3.1...
Diamond
Chameleon Diamond - 1.00ct Natural Loose Fancy Gray Yellow Green Pear GIA VS2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $13,900 Item Stock Number - CH59764763724 Certificate Number - GIA 523275826 Shape - Pear Carat Weight - 1.00ct Measurements - 8.31 x 4.92 x 3.25 ...
Diamond
Chameleon Diamond - 1.01ct Natural Loose Fancy Gray Yellow Green Oval GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,500 Item Stock Number - CH3643754827 Certificate Number - GIA 6522895538 Shape - Oval Carat Weight - 1.01ct Measurements - 7.97 x 5.33 x 3.47 ...
Diamond
Chameleon Diamond - 1.51ct Natural Loose Fancy Gray Yellow Green Oval GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $19,500 Item Stock Number - CH3643754828 Certificate Number - GIA 5231114128 Shape - Oval Carat Weight - 1.51ct Measurements - 9.29 x 6.16 x 4.08 ...
Diamond
Chameleon Diamond - 1.00ct Natural Loose Fancy Dark Gray Green Oval GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $16,500 Item Stock Number - CH3643754829 Certificate Number - GIA 6505783816 Shape - Oval Carat Weight - 1.00ct Measurements - 6.56 x 5.11 x 3.49 ...
Diamond
Chameleon Diamond - 0.49ct Natural Loose Fancy Gray Yellow Green Pear GIA VS2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $9,0500 Item Stock Number - CH923598365 Certificate Number - GIA 5231807084 Shape - Pear Carat Weight - 0.49ct Measurements - 6.72 x 4.01 x 2.53 C...
Diamond
Chameleon Diamond - 0.30ct Natural Loose Fancy Gray Yellow Green Pear GIA SI1
Located in New York, NY
DIAMOND INFORMATION Retail Price - $6,0500 Item Stock Number - CH923598366 Certificate Number - GIA 1232807245 Shape - Pear Carat Weight - 0.30ct Measurements - 5.42 x 3.46 x 2.25 C...
Diamond
Chameleon Diamond - 2.01ct Natural Loose Fancy Dark Yellow Green Oval GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $18,900 Item Stock Number - CH59764763726 Certificate Number - GIA 2235649906 Shape - Oval Carat Weight - 2.01ct Measurements - 9.08 x 6.27 x 4.34...
Diamond
Chameleon Diamond - 1.01ct Natural Loose Fancy Gray Green Yellow Pear GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $16,500 Item Stock Number - CH3643754830 Certificate Number - GIA 6237769372 Shape - Pear Carat Weight - 1.01ct Measurements - 8.31 x 4.89 x 3.35 ...
Diamond
Chameleon Diamond - 1.51ct Natural Loose Fancy Deep Yellow Green Radiant GIA VS1
Located in New York, NY
DIAMOND INFORMATION Retail Price - $18,900 Item Stock Number - CH59764763725 Certificate Number - GIA 6505780294 Shape - Radiant Carat Weight - 1.51ct Measurements - 7.83 x 5.19 x 3...
Diamond
Chameleon Diamond - 1.01ct Natural Loose Fancy Dark Green Yellow Pear GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,000 Item Stock Number - CH59764763718 Certificate Number - GIA 6237769372 Shape - Pear Carat Weight - 1.01ct Measurements - 8.31 x 4.89 x 3.35...
Diamond
Chameleon Diamond - 1.00ct Natural Loose Fancy Dark Yellow Green Oval GIA SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $13,900 Item Stock Number - CH59764763723 Certificate Number - GIA 6505783816 Shape - Oval Carat Weight - 1.00ct Measurements - 6.56 x 5.11 x 3.49...
Diamond
Rare Diamond VS2 GIA 0.40ct Natural Loose Fancy Green Gray - Collectors Grade
Located in New York, NY
DIAMOND INFORMATION Retail Price - $12,500 Item Stock Number - GG23573586 Certificate Number - GIA 2235736584 Shape - Cushion Carat Weight - 0.40ct Measurements - 3.96 x 3.74 x 2.76...
Diamond
Chameleon Diamond - 0.47ct Natural Loose Fancy Green Pear GIA VS1 Match Pair
Located in New York, NY
DIAMOND INFORMATION Retail Price - $8,500 Item Stock Number - CH923598368 Certificate Number - GIA 2231806925, GIA 5232806452 Shape - Pear Carat Weight - 0.24ct, 0.23ct Measurements...
Diamond
Chameleon Diamond - 0.47ct Natural Loose Fancy Green Pear GIA VS1 Match Pair
Located in New York, NY
DIAMOND INFORMATION Retail Price - $8,500 Item Stock Number - CH923598368 Certificate Number - GIA 2231806925, GIA 5232806452 Shape - Pear Carat Weight - 0.24ct, 0.23ct Measurements...
Diamond
Chameleon Diamond - 0.50ct Natural Loose Fancy Gray Yellow Green Pear GIA VS2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $9,000 Item Stock Number - CH923598364 Certificate Number - GIA 2235736033 Shape - Pear Carat Weight - 0.50ct Measurements - 6.20 x 4.12 x 2.60 Co...
Diamond
Chameleon Diamond - 0.50ct Natural Loose Fancy Gray Yellow Green Pear GIA VS2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $9,000 Item Stock Number - CH923598364 Certificate Number - GIA 2235736033 Shape - Pear Carat Weight - 0.50ct Measurements - 6.20 x 4.12 x 2.60 Co...
Diamond
Gray Diamond - 1.50Ct Natural Loose Fancy Green Gray Color Pear shape SI2
Located in New York, NY
DIAMOND INFORMATION Retail Price - $15,500 Item Stock Number - G43725865976 Certificate Number - GIA 2239223972 Shape - Pear Carat Weight - Measurements - 9.60 x 6.26 x 4.01 C...
Diamond
Natural 1.80ct Gia Fancy Dark Brown Green Yellow Heart Brilliant Loose Diamond
Located in Houston, TX
One loose diamond described as follows... In excellent condition. Pre-owned in excellent condition. Might show minor signs of wear. One (1) heart-shape brilliant cut natural diamon...
Diamond
GIA Certified Pear 8.27ct. Natural Loose F. Grayish Yellowish Green VVS2 Diamond
Located in Ramat Gan, Tel Aviv District
GIA Report #2165887491 GIA Radiant 8.27 Carat Natural Loose Fancy Grayish Yellowish Green VVS2 Diamond Color: Natural Fancy Grayish Yellowish Green Shape and Cut: Pear Modified Br...
Diamond
GIA Oval 0.86 Total Carat Weight Natural Loose Purplish-Pink & Blue-Green Combo
Located in Ramat Gan, Tel Aviv District
GIA Report #5201855945 & 1186481503 GIA Certified Oval 0.86 Total Carat Weight Natural Loose Purplish-Pink & Blue-Gray Mixed Diamond Pair Shape and Cut: Oval Modified Brilliant. C...
Blue Diamond, Pink Diamond
$12,159Sale Price|24% Off
GIA Emerald Natural Diamond 1.60ct F/VS1 Loose GIA XX $2000 Credit, Inscription
By GIA
Located in San Diego, CA
Exquisite loose 1.60ct emerald-cut diamond certified by GIA with laser inscription number 1175388529. F Color and VS1 Clarity with no fluorescence. The diamond has excellent polish a...
Diamond, Alexandrite, Amethyst, Aquamarine, Blue Diamond, Yellow Diamond...
Antique Green Beryl 146.20carats Gem with 22kgold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 146.20Carats Size: 35x19 MM Pieces: 1 Shape: Rondelle Smooth Bead
Beryl, Diamond, Green Beryl
Antique Green Beryl 145.12carats Gem with 22kgold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 145.12Carats Size: 35x20 MM Pieces: 1 Shape: Rondelle Smooth Bead
Beryl, Diamond, Green Beryl
Antique Green Beryl 238.47carats Gem with 22kgold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 238.47Carats Size: 36x25 MM Pieces: 1 Shape: Rondelle Smooth Bead
Beryl, Diamond, Green Beryl
Antique Green Beryl 66.76 Carats Gem with 22kGold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 66.76 Carats Size: 24x16.5 MM Pieces: 1 Shape: Rondelle Smooth Bead
Beryl, Diamond, Green Beryl
Antique Green Beryl 50.47 Carats Gem with 22kgold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 50.47 Carats Size: 23x12 MM Pieces: 1 Shape: Rondelle Smooth Bead
Beryl, Diamond, Green Beryl
GIA Certified 1.01 Carat Faint Green( Undetermine ) VS1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 2494368553 Shape And Cut: Radiant Carat Weight: 1.01 carat Measurements: 5.54 x 5.53 x 3.53 mm Color Grade: Faint Green ( Undetermine ) FEATURES OF...
Diamond
GIA Certified 0.75 Light Green SI2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 6382202298 Shape And Cut: Heart Carat Weight: 0.75 carat Measurements: 5.89 x 6.53 x 2.81 mm Color Grade: Light Green FEATURES OF THE DIAMOND: This...
Diamond
GIA Certified 2.00 Carat Fancy Yellow Green VVS2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 1236926377 Shape And Cut: Pear Carat Weight: 2.00 carat Measurements: 10.85 x 6.95 x 4.43 mm Color Grade: Fancy Yellow Green FEATURES OF THE DIAMO...
Diamond
GIA Certified 1.55 Carat Fancy Yellow Green Si1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 2557086013 Shape And Cut: Pear Carat Weight: 1.55 carat Measurements: 9.22 X 5.71 X 3.92 mm Color Grade: Fancy Yellow Green FEATURES OF THE DIAMON...
Diamond
GIA Certified 0.30 Carat Faint Yellow Green Vs2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 6402468061 Shape And Cut: Round Carat Weight: 0.30 carat Measurements: 4.24 - 4.26 x 2.65 mm Color Grade: Faint Yellow Green FEATURES OF THE DIAMON...
Diamond
$784Sale Price|56% Off
IGI certified 0.38carat Natual diamond Rare Gray Green Yellow
Located in bangkok, TH
D91 IGI certified Natual diamond Fancy Green Gray Yellow Weight:0.38ct/ Color: Green Gray Yellow Clarity:SI1 Certified: IGI Cutting: Very Good Origin: African
Diamond
GIA Certified 0.88 Carat Light Green SI1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 2378585083 Shape And Cut: Pear Carat Weight: 0.88 carat Measurements: 7.77 x 5.23 x 3.06 mm Color Grade: Light Green FEATURES OF THE DIAMOND: This ...
Diamond
GIA Certified 0.69 Carat Light Green VS1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 7386398643 Shape And Cut: Pear Carat Weight: 0.69 carat Measurements: 7.15 x 4.66 x 2.85 mm Color Grade: Light Green FEATURES OF THE DIAMOND: This ...
Diamond
GIA Certified 1.58 Carat Faint Green VS2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 1338402456 Shape And Cut: Cushion Carat Weight: 1.58 carat Measurements: 6.76 x 6.75 x 3.94 mm Color Grade: Faint Green FEATURES OF THE DIAMOND: Th...
Diamond
GIA Certified 0.80 Carat Faint Green VS1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 2376457588 Shape And Cut: Radiant Carat Weight: 0.80 carat Measurements: 6.67 x 4.3 x 2.95 mm Color Grade: Faint Green FEATURES OF THE DIAMOND: T...
Diamond
GIA Certified 0.48 Carat Fancy Light Yellow Green SI2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 1549113465 Shape And Cut: RADIANT Carat Weight: 0.48 carat Measurements: 4.36 x 4.34 x 2.86 mm Color Grade: Fancy Light Yellow Green FEATURES OF TH...
Diamond
GIA Certified 1.14 Carat Fancy Light Yellow Green SI2 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 6542176855 Shape And Cut: Round Carat Weight: 1.14 carat Measurements: 6.69 - 6.74 x 4.13 mm Color Grade: Fancy Light Yellow Green FEATURES OF THE ...
Diamond
GIA Certified 1.02 Carat Fancy Light Green Yellow Si1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 2547485879 Shape And Cut: Pear Carat Weight: 1.02 carat Measurements: 7.85 x 5.09 x 3.35 mm Color Grade: Fancy Light Green Yellow FEATURES OF THE D...
Diamond
GIA Certified 0.75 Carat Light Green SI1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 7373762049 Shape And Cut: Pear Carat Weight: 0.75 carat Measurements: 7.66 x 4.88 x 2.9 mm Color Grade: Light Green FEATURES OF THE DIAMOND: This ...
Diamond
Loose GIAa Certified 0.92 Carat Fancy Natural Green Rectangular Diamond
Located in Toronto, CA
0.92 Carat Weight Natural Fancy Vivid-Yellow Green Diamond I1 Clarity Dimensions: 5.21mm x 4.89mm x 4.18mm Mined Diamond GIA Report # 6183503820 Green diamonds are amongst the rarest...
Diamond, Yellow Diamond
Loose GIA Certified 0.92 Carat Fancy Natural Green Rectangular Diamond
Located in Toronto, CA
0.92 Carat Weight Natural Fancy Vivid-Yellow Green Diamond I1 Clarity Dimensions: 5.21mm x 4.89mm x 4.18mm Mined Diamond GIA Report # 6183503820 Green diamonds are amongst the rarest...
Diamond, Yellow Diamond
GIA Certified 2.04 Carat Fancy Blue Green VS2 Cushion Loose Diamond
By Tamir
Located in Beverly Hills, CA
Immensely rare and exotic 2.04ct fancy bluish green, VS2, cushion loose diamond. GIA certificate attached.
Blue Diamond
Pair of GIA Certified Loose Tapered Baguette Treated Natural Fancy Green 0.39ct
Located in Houston, TX
One pair of loose diamonds described as follows... One (1) tapered baguette cut natural diamond: Measurements: 5.82mm x 2.90mm x 1.39mm in depth.
Diamond
GIA certified 0.70 Old Mine Green Diamond
Located in Ramat Gan, IL
Introducing a rare and captivating treasure: a 0.70-carat GIA Certified Old Mine Green Diamond. This exquisite gem is a celebration of timeless elegance and natural beauty, featuring...
Diamond
GIA Certified 1.16 Carat Faint Green SI1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 1483287323 Shape And Cut: Cushion Carat Weight: 1.16 carat Measurements: 5.93 x 5.81 x 3.79 mm Color Grade: Faint Green FEATURES OF THE DIAMOND: O...
Diamond
Sold
H 0.17 in W 0.24 in L 0.24 in
GIA Certified 1.33 Carat Fancy Intense Yellowish Green SI1 Clarity Diamond
Located in บางรัก, TH
Certificate: GIA Report Number: 5176326196 Shape And Cut: Cushion Carat Weight: 1.33 carat Measurements: 6.03 x 6.02 x 4.08 mm Color Grade: Fancy Intense Yellowish Green FEATURES O...
Diamond
Sold
D 0.83 in L 1.11 in
Antique Green Beryl 235.55carats Gem with 22kgold Handwork with Natural Diamonds
Located in Jaipur, RJ
Weight: 235.55Carats Size: 28x21 MM Pieces: 2 Shape: Rondelle Smooth Beads
Beryl, Diamond, Green Beryl
IGI certified natural Diamond 0.78carat Fancy Brown Green Yellow VS2
Located in bangkok, TH
Name: natural fancy color diamond weight: 0.78ct origin: African color: Fancy brown green yellow clarity: VS2 certificate: IGI Cut: Very good
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.