Certified Gemstones

Natural Gemstones

Blue Spinel

Loose Spinel Gemstone

Natural Sandawana Emerald Octagon Cut Certified Gemstone 1.51 Cts Green Emerald.

$950

Natural Sandawana Emerald Octagon Cut Certified Gemstone 1.51 Cts Green Emerald.

Located in Chicago, IL

Natural Sandawana Emerald Octagon Cut Certified Gemstone 1.51 Cts Green Emerald. Certification: IGITL / IGI.

Category

2010s Zimbabwean Art Deco Loose Gemstones

Materials

Emerald

AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats

$6,750

AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats

By OGI Ltd

Located in New York, NY

AGL certificate Natural Pink Sapphire weighing 2.92 carats Purplish Pink Color Oval Shaped, mix cut Heated Color Stability Excellent Measuring 8.63x7.11x5.10 mm Natural corundum pi...

Category

Mid-20th Century Sri Lankan Contemporary Loose Gemstones

Materials

Pink Sapphire

Natural 1.18Ct Deep Green Blue Teal Sapphire Heart Cut IGI Certified Gemstone

$415Sale Price|20% Off

Natural 1.18Ct Deep Green Blue Teal Sapphire Heart Cut IGI Certified Gemstone

By Gems and Jewels UK

Located in Birmingham, GB

Natural 1.18Ct Deep Green Blue Teal Sapphire Heart Cut IGI Certified Gemstone Fine Deep Green Blue ‘Teal’ Sapphire In IGI Blister. 1.18 Carat with an excellent heart cut and excelle...

Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Green Sapphire, Other

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.

$3,147

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.

By GRALJEWELRY

Located in Dublin, D

Natural Garnet Spessartite loose gemstone 5.17 Ct. Colourstone certified Gemstone Color: Vivid Orange Gemstone Type: Garnet Spessartite Gemstone size: 10.40x8.94x6.31 mm Gemstone Sh...

Category

2010s Tanzanian Loose Gemstones

Materials

Garnet

$1,010

Natural Tourmaline rubellite loose gemstone 2.11 ct., VIVID Pink , Certificate!

By GRALJEWELRY

Located in Dublin, D

Natural Tourmaline Rubellite Loose gemstone 2.11 ct., Origin Afghanistan GFCO laboratory certified Gemstone Color: VIVID Pink Gemstone Type: Tourmaline Rubellite Gemstone size: 8.00...

Category

2010s Afghan Loose Gemstones

Materials

Materials

Sapphire, Agate, Diamond, White Diamond

Unavailable

W 0.61 in D 0.34 in L 0.42 in

9.70ct Cushion Morganite GIA Certified

Located in Toronto, Ontario

This is a stunning GIA Certified Morganite The GIA report reads as follows: GIA Report Number: 2201973629 Shape: Cushion Cutting Style: Cutting Style: Crown: Brilliant Cut Cutting ...

Category

2010s Brazilian Loose Gemstones

Materials

Morganite

Unavailable

Emerald Pearshape Zambia 10.23 TCW Certified

Located in ประเวศ, TH

"This Pear-Shaped Zambian Emerald, weighing 10.23 TCW and certified by GFCO, combines a striking green colour with substantial size, offering a luxurious and authentic gem that’s sur...

Category

2010s Loose Gemstones

Materials

Emerald

2.92ct Cushion Green Tsavorite Garnet GIA Certified

Unavailable

W 0.36 in D 0.23 in L 0.27 in

2.92ct Cushion Green Tsavorite Garnet GIA Certified

Located in Toronto, Ontario

This is a stunning GIA Certified Tsavorite Garnet The GIA report reads as follows: GIA Report Number: 1533744409 Shape: Cushion Cutting Style: Cutting Style: Crown: Brilliant Cu...

Category

2010s Kenyan Loose Gemstones

Materials

Garnet, Tsavorite

Unavailable

GIA Certified 8.25 Carat Oval Ruby

Located in LA, CA

8.25 carats Oval Ruby 15.25 x 11.82 x 4.36 mm GIA #2221208088 Ruby is the most famous and well-known red gemstone, and it stands out for its intense red color. This tiny piece of 8....

Category

2010s Loose Gemstones

Materials

Ruby

GIA Certified 2.3ct Octagonal Burma Ruby

Unavailable

GIA Certified 2.3ct Octagonal Burma Ruby

Located in LA, CA

2.3ct Octagonal Shape Natural Burma Ruby 10.28 x 5.58 x 3.48 mm GIA #2205450036 #B3-34 Burmese rubies have a very distinct, intensely saturated color that results from the high chrom...

Category

2010s Loose Gemstones

Materials

Ruby

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$16,875

L 6.75 in

Van Cleef & Arpels Paris Diamond Gold Link Bracelet

By Van Cleef & Arpels

Located in Greenwich, CT

Link up with this spectacular Van Cleef & Arpels Paris diamond and 18 karat yellow gold vintage bracelet. With a total of 2.50 carats of round cut diamonds, this one-of-a-kind b...

Category

1990s French Modernist Link Bracelets

Materials

Diamond, Gold, 18k Gold

$59,000

W 0.39 in D 0.24 in L 0.46 in

$120,000

GIA certified 7.86 ct Natural Fancy-Brown Yellow Marquise Diamond Ring in Pt

By HYT Jewelry

Located in Hong Kong, HK

A one-of-a-kind cocktail ring featuring a rare GIA-certified Fancy Brown Yellow marquise-cut diamond. This special piece from our exclusive collection showcases exceptional color an...

Category

2010s Hong Kong Early Victorian Cocktail Rings

Materials

White Diamond, Yellow Diamond, Platinum

GIA Rare No Oil Emerald 1.47carat Ural Russia origin Collection

$2,800Sale Price|30% Off

GIA Rare No Oil Emerald 1.47carat Ural Russia origin Collection

Located in bangkok, TH

Natural Ural Emerald No Oil Weight : 1.47 ct Color: Green Treatment : No / No oil / Untreatment Certified by GIA Origins : Ural Russia EMA137 No-oil emeralds are among the rares...

Category

2010s Loose Gemstones

Materials

Emerald, 18k Gold

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Certified Gemstones For Sale on 1stDibs

Browse a vast assortment of certified gemstones for sale on 1stDibs. Frequently made of Gold, Platinum and 18k Gold, these items were constructed with great care. Find a collection of 3 vintage versions or 71 modern creations for a more contemporary example of these cherished accessories. Our collection, which features older pieces for sale from the 20th Century and newer versions made as recently as the 21st Century, has proven very popular over the years. The designs in our inventory of certified gemstones bearing Contemporary or Modern hallmarks are very popular. Many examples in our inventory of these items are appealing no matter their origins, but Merkaba, Tamir and FERRUCCI produced popular versions that are worth a look. Many pieces in our collection are stylish for most occasions, but Diamond versions, from our inventory of 48, can add a particularly distinctive touch to your look, day or night. Today, if you’re looking for oval cut certified gemstones and are unable to find the perfect match, our selection also includes cushion cut and emerald cut alternatives. Most of our certified gemstones for sale are for women, but there are 29 pieces available to browse for men.

How Much are Certified Gemstones?

Prices for certified gemstones start at $353 and top out at $325,000 with these rings, on average, selling for $28,000.

Finding the Right Loose-gemstones for You

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.