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13.56 Carat Aquamarine Oval-Cut Unset Loose 3-Stone Ring Gemstone
By Gems Paradise
Located in Jaipur, IN
13.56 Carat Aquamarine Emerald-Cut Unset Loose 3-Stone Ring Gemstone Length: 10.12 mm Width: 12.74
Category

2010s Unknown Artisan Loose Gemstones

Materials

Aquamarine

34.25 Carat Aquamarine Emerald-Cut Unset Loose 3-Stone Ring Gemstone
By Gems Paradise
Located in Jaipur, IN
34.25 Carat Aquamarine Emerald-Cut Unset Loose 3-Stone Ring Gemstone Length: 13.39 mm Width: 27.57
Category

2010s Unknown Artisan Loose Gemstones

Materials

Aquamarine

10.55 Carat Aquamarine Emerald-Cut Unset Loose 3-Stone Ring Gemstone
By Gems Paradise
Located in Jaipur, IN
10.55 Carat Aquamarine Emerald-Cut Unset Loose 3-Stone Ring Gemstone Length: 9 mm Width: 14.10 mm
Category

2010s Unknown Artisan Loose Gemstones

Materials

Aquamarine

1.50 Carat Oval Loose Unset Tanzanite Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 1.50 carat oval tanzanite has beautiful, medium violet-blue color and is such a pretty gem! It
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

7.34 Carat Oval Peridot, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This striking peridot gem has beautiful color and is exceptionally brilliant! Peridot of this fine
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Peridot

7.20 Carat Oval Tanzanite, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
beautifully symmetrical gem like this which measures 13.78 x 10.52 x 6.86 millimeters. the possibilities are
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

74.72 Carat Rectangular Aquamarine, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
33.00 x 21.00 x 13.80 millimeters and would be stunning in a gem collection or a prominent piece of
Category

21st Century and Contemporary Brazilian Artisan Loose Gemstones

Materials

Aquamarine

74.72 Carat Rectangular Aquamarine, Unset Loose Gemstone
74.72 Carat Rectangular Aquamarine, Unset Loose Gemstone
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W 0.83 in D 0.55 in L 1.3 in
.92 Carat Oval Unset Loose Ruby Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, almost electric cherry red color with gorgeous pinkish highlights. It is eye clean and a real gem! This
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Ruby

Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Very unique Copper Tourmaline round gem, offered loose to someone special. Returns are accepted and
Category

21st Century and Contemporary Unknown Contemporary Loose Gemstones

Materials

Tourmaline, Other

Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
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W 0.37 in Dm 0.37 in L 0.37 in
65.49 Carat Amethyst Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This luscious royal purple amethyst weighs 65.49 carats and would make a perfectly regal and eye-catching pendant! It is beautifully faceted and crystal clean, with velvety rich purp...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Amethyst

65.49 Carat Amethyst Oval, Unset Loose Gemstone
65.49 Carat Amethyst Oval, Unset Loose Gemstone
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W 0.91 in D 0.7 in L 1.15 in
7.25 Carat Aquamarine Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautifully crystalline aquamarine is a perfectly shaped oval weighing 7.25 carats and would make a spectacular ring or pendant. Brilliantly faceted with extraordinary life and ...
Category

21st Century and Contemporary Brazilian Artisan Loose Gemstones

Materials

Aquamarine

7.25 Carat Aquamarine Oval, Unset Loose Gemstone
7.25 Carat Aquamarine Oval, Unset Loose Gemstone
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W 0.47 in D 0.31 in L 0.6 in
1.24 Carat Oval Loose Unset Ruby Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This pretty ruby has a rich red color and is the perfect size for a classic 3-stone ring! Weighing 1.24 carat, it measures 6.81 x 4.85 millimeters and has beautiful proportions. The ...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Ruby

Rhodolite Garnet Ring Gem 9.27 Carat Unset Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Marvelous 9.27 carats Rhodolite Garnet gem, offered loose to a gemstone lover. Returns are accepted
Category

21st Century and Contemporary Unknown Modern Loose Gemstones

Materials

Garnet, Rhodolite

1.62 Carat Tsavorite Garnet Cushion, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This pretty tsavorite garnet is so bright and lively! The perfect shade of spring green, this gem
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet, Tsavorite

16.93 Carat Orange Zircon Cushion, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
superior brilliance and clarity! Faceted as a cushion shape with excellent proportions, this gem would make
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Zircon

16.93 Carat Orange Zircon Cushion, Unset Loose Gemstone
16.93 Carat Orange Zircon Cushion, Unset Loose Gemstone
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W 0.46 in D 0.38 in L 0.57 in
1.42 Carat Tsavorite Garnet Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This tsavorite oval is an absolute gem! Whether you're looking for spring, summer, or holiday green
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet, Tsavorite

3.84 Carat Spessartite Garnet Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. An eye clean and lively gem, this beauty weighs 3.84 carats and would make a stunning piece of
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet

19.34 Carat Blue Zircon Cushion, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This brilliant, cushion cut gem checks all the boxes if you're looking for an unusually large, fine
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Zircon, Zircon

1.32 Carat Pear-Shaped Loose Unset Tanzanite Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, this gem is a beautifully proportioned pear shape that will make a gorgeous pendant or ring. A really
Category

21st Century and Contemporary Zambian Artisan Loose Gemstones

Materials

Tanzanite

1.57 Carat Oval Unset Loose Unmounted Aquamarine Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
brilliance, this crystalline gem is collection worthy! We specialize in custom designs and would love to
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Aquamarine

7.49 Carat Rose Zircon Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
because of its range of hues, brilliance and fire. This particular gem is unusually well-cut and
Category

21st Century and Contemporary Loose Gemstones

Materials

Zircon

4.56 Carat Peridot, Pear Shape, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, this gem has lovely proportions and would lend itself to either ring or pendant designs. We offer
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Peridot

.96 Carat Oval Loose Unset Fancy Sapphire Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
your gem! Weighing .96 carats, it is just shy of a full carat, has gorgeous color and is such a
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Pink Sapphire

2.77 Carat Oval Mandarin Garnet, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
design allows for exceptional brilliance and an exquisite display of color and life. This gem has a very
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Mandarin Garnet, Garnet

5.61 Carat Pear Shaped Tanzanite, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
excellent luster, this gem will be dazzling whether set in a sleek and modern design or surrounded with
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

5.61 Carat Pear Shaped Tanzanite, Unset Loose Gemstone
5.61 Carat Pear Shaped Tanzanite, Unset Loose Gemstone
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W 0.35 in D 0.26 in L 0.56 in
4.54 Carat Aquamarine, Pear Shape, Loose Unset Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. It weighs 4.54 carats, is perfectly proportioned and such a brilliant gem! It would be stunning set
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Aquamarine

4.54 Carat Aquamarine, Pear Shape, Loose Unset Gemstone
4.54 Carat Aquamarine, Pear Shape, Loose Unset Gemstone
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W 0.38 in D 0.27 in L 0.56 in
1.02 Oval Unset Unmounted Loose Pink Tourmaline Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 1.02 carat oval pink tourmaline is sure to put a smile on your face! With its slightly purplish pink hue and pleasing shape, this sparkling gemstone would make a very pretty rin...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Rubelite, Tourmaline

10.18 Carat Round Blue Zircon, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This blue zircon is a vivid, bright "Windex" blue color, is exceptionally clean and would make a beautiful pendant or necklace enhancer! Faceted as a classic round shape, it measures...
Category

21st Century and Contemporary Loose Gemstones

Materials

Zircon, Blue Zircon

Tourmaline Earrings Gemstone Pair 11.26 Carat Unset Asscher Cut Loose Gems
By Merkaba
Located in Beverly Hills, CA
Superb pair of light bluish green, "loupe clean", Tourmaline gem square octagons, weighing a total
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline

Mandarin Garnet Earrings Gemstone Pair 3.78 Carat Unset Oval Loose Gems
By Merkaba
Located in Beverly Hills, CA
Superb pair of Mandarin Garnet oval gems, weighing a total of 3.78 carats, offered loose to a fine
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Garnet, Mandarin Garnet

Blue Green Tourmaline Gem 9.64 Carat Unset Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exclusive 9.64 carat elongated emerald-cut Bluish Green Tourmaline gem offered loose to a very
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Other, Tourmaline

Green Beryl Ring Gem Princess Cut 15.52 Carat Unset Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Magnificent pastel, Cyan, bluish Green Beryl, princess-cut gem, weighing a total of 15.52 carats
Category

21st Century and Contemporary Mozambican Modern Loose Gemstones

Materials

Green Beryl, Beryl

Amethyst Ring Gem 18.80 Carat Unset Fancy Oval Brazil Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Exclusive 18.80 carat Brazilian Amethyst fancy cut oval gem, offered loose to a very unique lady or
Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Amethyst, Quartz

Royal Purple Garnet Ring Gem 14.24 Carat Unset Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Collection 14.24 carat reddish purple Garnet gem, offered loose to an avid gem collector
Category

21st Century and Contemporary Mozambican Modern Loose Gemstones

Materials

Garnet, Other

4.72 Carat Pear Shaped Blue Zircon, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
pendant or ring! Zircon is one of the most brilliant, lively natural gemstone varieties. This gem has
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Blue Zircon, Zircon

4.72 Carat Pear Shaped Blue Zircon, Unset Loose Gemstone
4.72 Carat Pear Shaped Blue Zircon, Unset Loose Gemstone
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W 0.32 in D 0.24 in L 0.42 in
6.25 Carat Red Orange Zircon Pear, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
out off the ordinary. This pretty gem measures 12.29 x 9.64 x 5.79 millimeters and weighs 6.25 carats
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Zircon

6.25 Carat Red Orange Zircon Pear, Unset Loose Gemstone
6.25 Carat Red Orange Zircon Pear, Unset Loose Gemstone
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W 0.38 in D 0.23 in L 0.49 in
Mandarin Garnet Earrings Gemstone Pair 5.80 Carat Unset Oval Loose Gems
By Emeralds Maravellous
Located in US
Natural Untreated pair of Mandarin Garnet oval gemstones, weighing a total of 5.80 carats, offered loose and design your own is available don't hesitate to contact us. Measurements: ...
Category

21st Century and Contemporary Nigerien Modern Loose Gemstones

Materials

Garnet, Mandarin Garnet

3.70 Carat Colombian Emerald, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
millimeters, this gem is exceptionally well cut and proportioned, giving the emerald superior brilliance and
Category

21st Century and Contemporary Colombian Artisan Loose Gemstones

Materials

Emerald

3.37 Carat Emerald Cut Octagonal Loose Unset Aquamarine Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
cut in a way that gives it the appearance of a larger gem. It would be lovely set as a pendant or ring
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Aquamarine, Emerald

7.40 Carat Burgundy Rhodolite Garnet Cushion, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
cushion shape. With such rich red color and exceptional clarity, this gem would make a beautiful piece of
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Rhodolite, Garnet

5.47 Carat Blue Zircon Square Octagon, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
breathtaking light return and life. Measuring 9.84 x 9.27 x 5.43 millimeters, this lovely gem weighs 5.47
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Zircon, Blue Zircon

6.40 Carat Octagon Cut Golden Zircon, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
-proportioned. This gem has excellent luster, no visible doubling, and is a gem in every sense of the word! This
Category

21st Century and Contemporary Loose Gemstones

Materials

Zircon

2.00 Carat Blue Sapphire Oval Loose Unset Ring Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
gem will brighten anyone's day! Natural inclusions and internal characteristics are magnified by
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

2.00 Carat Blue Sapphire Oval Loose Unset Ring Gemstone
2.00 Carat Blue Sapphire Oval Loose Unset Ring Gemstone
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W 0.24 in D 0.17 in L 0.36 in
5.26 Carat Round Apple Green Peridot, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, well cut round, offering great versatility for design options. This 5.26 carat gem has excellent luster
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Peridot

5.26 Carat Round Apple Green Peridot, Unset Loose Gemstone
5.26 Carat Round Apple Green Peridot, Unset Loose Gemstone
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W 0.44 in D 0.31 in L 0.44 in
3.28 Carat Bi-Color Watermelon Tourmaline, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
carat emerald-cut gem measures 11.09 x 7.20 x 4.30 millimeters and would lend itself to a variety of
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

1.37 Carat Emerald Oval, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This vibrant, bright green emerald is an exceptional gem with gorgeous color and clarity! It is a
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Emerald

1.17 Carat Unset Loose Unmounted Cushion Shaped Tanzanite Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
balance of rich blue and purple, this is unmistakeable as the highly-prized African gem from Tanzania. It
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

33.40 Carat Bi-Color Tourmaline Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
proportions, this gem displays endless life and sparkle! It measures 22.54 x 16.37 x 12.50 millimeters and
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

7.16 Carat Precious Imperial Topaz Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautiful 7.16 carat precious topaz has brilliant apricot-orange color and exceptional clarity! Measuring 13.43 x 9.40 x 7.08 millimeters, this beautifully well-proportioned ova...
Category

21st Century and Contemporary Loose Gemstones

Materials

Imperial Topaz, Topaz

1.76 Carat Brazilian Emerald, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautiful 1.76 carat emerald is a gorgeous, vivid green color with exceptional clarity! Highly saturated with even coloring and lovely secondary hints of blue, this superior eme...
Category

21st Century and Contemporary Brazilian Artisan Loose Gemstones

Materials

Emerald

3.66 Carat Unset Loose Pear Shaped Unmounted Tanzanite Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This gorgeous 3.66 carat pear-shaped tanzanite has rich, deep color, which is seldom seen. It will make a stunning necklace or ring! It measures 9.79 x 8.16mm and has a perfect blend...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

33.95 Carat Imperial Topaz Cushion, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This impressive, peachy orange gem is a beautiful example of Imperial topaz at its finest! It is an
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Topaz, Imperial Topaz

Privately Curated Zircon Collection, Unset Loose Gemstones, 347.05 Carats Total
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Gem Trade Association. Zircon is the birthstone for December and would make the ultimate gift for the
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Zircon

Greenish Yellow Tourmaline Ring Gem 17.54 Carat Unset Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exclusive 17.54 carat, "loupe clean", greenish yellow Tourmaline, emerald-cut gem, offered loose to
Category

21st Century and Contemporary Namibian Contemporary Loose Gemstones

Materials

Tourmaline, Other

Unheated .75 Carat Padparadscha Sapphire, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
blessed with this much vivid color naturally, especially in gems under a carat. This natural color .75
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Sapphire, Padparadscha Sapphire

Pink Spinel Ring Gem 2.98 Carat Unset Fancy Cut Mahenge Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
One-of-a-kind 2.98 carat Pink Spinel fancy cut gem, from Mahenge Tanzania, offered loose to a world
Category

21st Century and Contemporary Unknown Modern Loose Gemstones

Materials

Spinel, Other

.85 Carat Cushion Cut Unset Loose Unmounted Red Spinel Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
If you are looking for a superb, fine-quality red spinel, look no further than this lovely gem
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Spinel

1.46 Carat "Berry" Color Change Garnet Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
, this gem is one you'll have fun wearing forever!
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet

2.00 Carat Heart Shaped Ruby, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
sparkling diamonds. This gem has no secondary purple or brown and the way it is faceted makes it appear much
Category

21st Century and Contemporary Thai Artisan Loose Gemstones

Materials

Ruby

2.19 Carat Cornflower Blue Sapphire Oval, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
gem from Sri Lanka, one of the world's premier sources of fine blue sapphires. This pretty oval
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

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Unset Gems For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of unset gems. Frequently made of 18k Gold, Gold and Platinum, these items were constructed with great care. The designs in our inventory of unset gems bearing Artisan or Modern hallmarks are very popular. Many examples in our inventory of these items are appealing no matter their origins, but Sarosi By Timeless Gems, Tamir and Merkaba produced popular versions that are worth a look. Any of these pieces can lend versatility to your look, but Tourmaline versions, from our inventory of 38, are particularly popular. A selection of oval cut, cushion cut and emerald cut can be found today on these pages. If you’re browsing the variety of unset gems for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are Unset Gems?

Prices for unset gems can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $65 and can go as high as $913,000, while unset gems, on average, fetch $5,515.

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.