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Loose Gems Alexandrite

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GIA Certified 3.99 Carat Natural Sri Lankan Alexandrite, Alexandrite Loose Gem
Located in Los Angeles, CA
color and measures 3.99 carats. This beautiful Sri Lankan Alexandrite is a natural gem of exceptional
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

Alexandrite Chrysoberyl 1.16 Carat Loose Gemstone, GIA Certified - RTP
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Gorgeous 1.16 carat cushion-shaped alexandrite chrysoberyl with beautiful blue-green body color in
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl

Alexandrite Chrysoberyl .78 Carat Loose Gemstone, GIA Certified - RTP
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This .78 carat alexandrite chrysoberyl is a gorgeous teal green color in fluorescent/daylight with
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl

Cat’s Eye Alexandrite Chrysoberyl, 5.24 Carat Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This captivating 5.24 carat cat's eye alexandrite chrysoberyl is exceptionally rare, as it exhibits
Category

21st Century and Contemporary Unknown Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl, Cat’s Eye

GIA Certified 0.76 Carat Natural Brazilian Alexandrite, Loose Alexandrite
Located in Los Angeles, CA
Need a sparkle in your life? This is it. This gem brings you the royalty of Brazilian Alexandrite
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 1.06 Carat Natural Alexandrite, Alexandrite Loose Gemstone
Located in Los Angeles, CA
on the lookout for that big deal gem you can't miss. This amazing alexandrite stone is a wonderful
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 1.00 Carat Natural Alexandrite, Loose Precious Gemstone
Located in Los Angeles, CA
on the lookout for that big deal gem you can't miss. This amazing alexandrite stone is a wonderful
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 1.24 Carat Natural Brazilian Alexandrite, Color Change Alexandrite
Located in Los Angeles, CA
The natural Brazilian Alexandrite is one of the most valuable and beautiful gems on earth. This
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 3.57 Carat Natural Alexandrite, Estate Color Change Alexandrite
Located in Los Angeles, CA
Alexandrite, the most exquisite of all colored gems. This natural alexandrite has been graded 3.57 carats with
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

7.95 Carat Oval Sphene, Loose Gemstone for Ring or Pendant
By Sarosi By Timeless Gems
Located in Los Angeles, CA
and is a beautifully crystalline gem. Expertly cut to maximize the doubling effect and dispersion for
Category

21st Century and Contemporary Artist Loose Gemstones

Materials

Alexandrite

Aquamarine Ring Loose Gemstone 4.26 Carat Oval Unmounted Gem
By Tamir
Located in Beverly Hills, CA
Bright 4.26 carat Aquamarine oval loose gemstone, offered unmounted to a very special person
Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Aquamarine, Beryl

Aquamarine Ring Loose Gemstone 4.26 Carat Oval Unmounted Gem
Aquamarine Ring Loose Gemstone 4.26 Carat Oval Unmounted Gem
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W 0.39 in D 0.12 in L 0.49 in
Pink Tourmaline Ring Gem 3.18 Carat Unmounted Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Pristine 3.18 carat Pink Tourmaline emerald cut loose gemstone, offered unmounted to a fine
Category

21st Century and Contemporary Congolese Contemporary Loose Gemstones

Materials

Tourmaline

GIA Certified Natural Alexandrite 0.56 Carats
Located in Los Angeles, CA
We're glad to share with you the certificate of GIA report. With this, you can be sure that the gem
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Alexandrite 0.56 Carats
GIA Certified Natural Alexandrite 0.56 Carats
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W 0.18 in D 0.11 in L 0.31 in
GIA Certified 0.48 Carats Brazilian Alexandrite
Located in Los Angeles, CA
Presenting a stunning Natural Brazilian Alexandrite weighing 0.48 carats, verified by a GIA Report
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 0.48 Carats Brazilian Alexandrite
GIA Certified 0.48 Carats Brazilian Alexandrite
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W 0.2 in D 0.13 in L 0.18 in
GIA Certified Natural Alexandrite 2.06 Carats
Located in Los Angeles, CA
, just like this natural alexandrite gemstone. Check out this gorgeous natural gem 2.06 carats with GIA
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Alexandrite 2.06 Carats
GIA Certified Natural Alexandrite 2.06 Carats
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W 0.26 in D 0.2 in L 0.31 in
Blue Tourmaline Ring Gem 2.75 Carat Cushion Unmounted Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Splendid 2.75 carat "Lagoon" Blue Tourmaline cushion loose gemstone, offered unmounted to a fine
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline

GIA Certified 2.69 Carats Indian Alexandrite
Located in Los Angeles, CA
Filled with an even tone, this well cut Alexandrite has an internal glow that will triumph. A color
Category

21st Century and Contemporary Indian Loose Gemstones

Materials

Alexandrite

GIA Certified 2.69 Carats Indian Alexandrite
GIA Certified 2.69 Carats Indian Alexandrite
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W 0.27 in D 0.24 in L 0.36 in
0.2 Carat Natural Color-Changing Russian Alexandrite
By Tsarina Jewels
Located in Bangkok, TH
0.2 ct weight natural Russian Alexandrite. The natural Russian Alexandrite is renowned for its
Category

2010s Russian Modern Loose Gemstones

Materials

Alexandrite

GIA Certified 0.78 Carats Natural Alexandrite
Located in Los Angeles, CA
, characteristic of Alexandrites. The cut is described as Modified Brilliant/Step, highlighting the gem
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

GIA Certified 0.78 Carats Natural Alexandrite
GIA Certified 0.78 Carats Natural Alexandrite
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W 0.22 in D 0.12 in L 0.23 in
GIA Certified Natural Alexandrite 5.10 Carats
Located in Los Angeles, CA
most beautiful and rare natural alexandrite gem that you can find. Please inquire for more videos
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified  Natural Alexandrite 5.10 Carats
GIA Certified  Natural Alexandrite 5.10 Carats
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W 0.36 in D 0.24 in L 0.41 in
Emerald Cut Loose Emerald from Russia Ring Gem 2.1 Carat
By Tsarina Jewels
Located in Bangkok, TH
-house from rough gems we source in Russia. We use only natural, untreated and certified Emeralds
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

GIA Certified 2.62 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This 2.62 carats natural Alexandrite is a remarkable gem with a cushion shape measuring 9.61 x 7.14
Category

21st Century and Contemporary Indian Loose Gemstones

Materials

Alexandrite

GIA Certified 2.62 Carats Color Changes Alexandrite
GIA Certified 2.62 Carats Color Changes Alexandrite
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W 0.29 in D 0.17 in L 0.38 in
GIA Certified Natural Brazilian Alexandrite 0.41 Carats
Located in Los Angeles, CA
gem you purchased is a genuine natural Brazil Alexandrite 0.41 carats. GIA Report states that the
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Brazilian Alexandrite  0.41 Carats
GIA Certified Natural Brazilian Alexandrite  0.41 Carats
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W 0.19 in D 0.1 in L 0.19 in
GIA Certified 1.13 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This 1.13 carats natural Alexandrite is a captivating gem with an oval shape measuring 7.04 x 5.50
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 1.13 Carats Color Changes Alexandrite
GIA Certified 1.13 Carats Color Changes Alexandrite
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W 0.22 in D 0.15 in L 0.28 in
0.24 Carat Weight Natural Color-Changing Russian Alexandrite
By Tsarina Jewels
Located in Bangkok, TH
0.24 ct weight triangular-shaped natural Russian Alexandrite. The natural Russian Alexandrite is
Category

2010s Russian Modern Loose Gemstones

Materials

Alexandrite

GIA Certified 0.72 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This 0.72 carats natural Alexandrite is a charming gem with a cushion shape measuring 5.63 x 4.38 x
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 0.72 Carats Color Changes Alexandrite
GIA Certified 0.72 Carats Color Changes Alexandrite
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W 0.18 in D 0.14 in L 0.23 in
Peach Tourmaline Ring Gem 10.36 Carat Antique Pear Shape Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exquisite 10.36 carat Peach Tourmaline antique pear shape gem, offered loose to a gemstone lover
Category

21st Century and Contemporary Mozambican Contemporary Loose Gemstones

Materials

Tourmaline, Other

Mint Green Tourmaline Ring Gem 7.68 Carat Unmounted Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Pristine 7.68 carat Mint Green Tourmaline cushion loose gemstone, offered unmounted to a fine gem
Category

21st Century and Contemporary Congolese Contemporary Loose Gemstones

Materials

Tourmaline

GIA Certified 1.11 Carats Color Change Alexandrite
Located in Los Angeles, CA
This natural Alexandrite, weighing 1.11 carats, is a captivating gem with an oval shape measuring
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

GIA Certified 1.11 Carats Color Change Alexandrite
GIA Certified 1.11 Carats Color Change Alexandrite
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W 0.2 in D 0.18 in L 0.26 in
GIA Certified 1.77 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This 1.77 carats natural Alexandrite is a captivating gem with an oval shape measuring 7.06 x 5.55
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

GIA Certified 1.77 Carats Color Changes Alexandrite
GIA Certified 1.77 Carats Color Changes Alexandrite
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W 0.22 in D 0.19 in L 0.28 in
GIA Certified 3.03 Carats Color Changes Alexandrite
Located in Los Angeles, CA
Presenting a remarkable natural color-changing Alexandrite, weighing 3.03 carats, accompanied by a
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

GIA Certified 3.03 Carats Color Changes Alexandrite
GIA Certified 3.03 Carats Color Changes Alexandrite
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W 0.28 in D 0.25 in L 0.31 in
Mint Green Tourmaline Ring Gem 4.78 Carat Unmounted Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Gorgeous 4.78 carat Mint Green Tourmaline cushion loose gemstone, offered unmounted to a devoted
Category

21st Century and Contemporary Mozambican Contemporary Loose Gemstones

Materials

Tourmaline

Mint Green Tourmaline Ring Gem 4.52 Carat Unmounted Trillion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Unique 4.52 carat Mint Green Tourmaline Trillion loose gemstone, offered unmounted to someone
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Mint Green Tourmaline Ring Gem 4.49 Carat Unmounted Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Fantastic 4.49 carat Mint Green Tourmaline cushion loose gemstone, offered unmounted to someone
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Mint Green Tourmaline Ring Gem 3.46 Carat Unmounted Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Vibrant 3.46 carat Mint Green Tourmaline cushion loose gemstone, offered unmounted to someone very
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

7.35 Carat Cushion Natural Alexandrite GIA Certified
Located in San Francisco, CA
A Rare 7.35 Carat Cushion Shaped Natural Alexandrite GIA Certificate 6192711041 was hand-selected
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

Oval Cut No Oil Russian Emerald Loose Gem 1.28 Carat Weight
By Tsarina Jewels
Located in Bangkok, TH
we facet in-house from rough gems we source in Russia. We use only natural, untreated and certified
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

15.52 Carat Faceted Chrysoberyl Cushion, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Faceted chrysoberyl may be less widely recognized compared to its famous cat's eye and alexandrite
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Chrysoberyl

15.52 Carat Faceted Chrysoberyl Cushion, Unset Loose Gemstone
15.52 Carat Faceted Chrysoberyl Cushion, Unset Loose Gemstone
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W 0.51 in D 0.4 in L 0.52 in
Alexandrite 0.24ct deep green to pinkish color change rare gemstone
Located in bangkok, TH
AXA09 Alexandrite 0.24ct deep green to pinkish color change rare gemstone Weight: 0.24ct Size
Category

2010s Loose Gemstones

Materials

Alexandrite

GIA Certified Natural 1.10 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This 1.10 carats natural Alexandrite is a captivating gem with an oval shape measuring 7.74 x 5.31
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural 1.10 Carats Color Changes Alexandrite
GIA Certified Natural 1.10 Carats Color Changes Alexandrite
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W 0.21 in D 0.14 in L 0.31 in
0.3 Carat Oval Shape Natural Color-Changing Russian Alexandrite
By Tsarina Jewels
Located in Bangkok, TH
0.3 ct weight oval shape natural Russian Alexandrite. The natural Russian Alexandrite is renowned
Category

2010s Russian Modern Loose Gemstones

Materials

Alexandrite

GIA Certified 1.12 Carats Brazilian Cat's Eye Alexandrite
Located in Los Angeles, CA
Introducing a remarkable Natural Brazilian Cat's Eye Alexandrite weighing 1.12 carats, with a GIA
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 1.12 Carats Brazilian Cat's Eye Alexandrite
GIA Certified 1.12 Carats Brazilian Cat's Eye Alexandrite
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W 0.21 in D 0.13 in L 0.26 in
10.90 Carat Natural Emerald Pear Cabochon Sugarloaf May Birthstone Loose Gem
Located in New York, NY
gemstones for you to choose from - Emerald, Ruby, Sapphire, Alexandrite , in addition to semi precious
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Emerald

0.53 Carat Natural Color Change Russian Alexandrite AGL Certified
By Tsarina Jewels
Located in Bangkok, TH
0.53 ct weight natural Russian Alexandrite. The natural Russian Alexandrite is renowned for its
Category

2010s Russian Modern Loose Gemstones

Materials

Alexandrite

6.65 Carat Oval Shape Natural Alexandrite GIA Certified Unheated
Located in San Francisco, CA
This 6.65-carat Rare Natural Unheated Alexandrite was hand-selected by our experts for its top
Category

21st Century and Contemporary Loose Gemstones

Materials

Alexandrite

Pink Tourmaline Ring Gem 5.83 Carat Unmounted Square Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
5.83 carat Pink Tourmaline square emerald-cut loose gemstone, offered unmounted to a very special
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

One-of-the-kind Untreated Russian Emerald Loose Gem 0.85 Carat Certified
By Tsarina Jewels
Located in Bangkok, TH
jewelry pieces featuring primarily unique stones we facet in-house from rough gems we source in Russia. We
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

0.63ct Pear Bluish Green to Pinkish Purple Alexandrite from India
Located in Toronto, Ontario
Description: Gem Type: Alexandrite Number of Stones: 1 Weight: 0.63 cts Measurements: 6.19 x 4.24
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.58ct Oval Bluish Green to Pinkish Purple Alexandrite from India
Located in Toronto, Ontario
Description: Gem Type: Alexandrite Number of Stones: 1 Weight: 0.58 cts Measurements: 5.11 x 4.19
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.68ct Oval Bluish Green to Pinkish Purple Alexandrite from India
Located in Toronto, Ontario
Description: Gem Type: Alexandrite Number of Stones: 1 Weight: 0.68 cts Measurements: 6.26 x 4.01
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.5ct Oval Bluish Green to Pinkish Purple Alexandrite from India
Located in Toronto, Ontario
Description: Gem Type: Alexandrite Number of Stones: 1 Weight: 0.5 cts Measurements: 6.09 x 4.16
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.49ct Oval Bluish Green to Pinkish Purple Alexandrite from India
Located in Toronto, Ontario
Description: Gem Type: Alexandrite Number of Stones: 1 Weight: 0.49 cts Measurements: 6.05 x 4.10
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.96ct Oval Yellowish Green to Purple Alexandrite GIA Certified Unheated
Located in Toronto, Ontario
Variety: Natural Alexandrite Geographic Origin: Not Requested Treatment: Item Description: One loose
Category

2010s Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 1.02 Carat Natural Brazil Alexandrite, June Birthstone Gift
Located in Los Angeles, CA
We're glad to share with you the certificate of GIA report. With this, you can be sure that the gem
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 0.30 Carat Natural Brazilian Color Change Alexandrite Gemstone
Located in Los Angeles, CA
on the lookout for that big deal gem you can't miss. This amazing alexandrite stone is a wonderful
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 0.77 Carat Natural Alexandrite, Color Changing Precious Stone
Located in Los Angeles, CA
We're glad to share with you the certificate of GIA report. With this, you can be sure that the gem
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Color Change Sri Lankan Alexandrite 8.73 Carat
Located in Los Angeles, CA
collector's piece with its GIA Report. Buy this gorgeous alexandrite loose gem to make your loved ones feel
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

0.85ct Round Cabochon Yellowish Green to Pink-Purple Cat's Eye Alexandrite from
Located in Toronto, Ontario
Description: Gem Type: Cat's Eye Alexandrite Number of Stones: 1 Weight: 0.85 cts Measurements
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

0.94ct Round Cabochon Yellowish Green to Pink-Purple Cat's Eye Alexandrite from
Located in Toronto, Ontario
Description: Gem Type: Cat's Eye Alexandrite Number of Stones: 1 Weight: 0.94 cts Measurements
Category

2010s Indian Loose Gemstones

Materials

Alexandrite

AGCL Certified 0.72 Ct Natural Alexandrite Gemstone Ceylon Origin Ring Gemstone
Located in Makola, LK
Natural rare Alexandrite, This exquisite gemstone originates from Ceylon (Sri Lanka), known for
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Alexandrite

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Loose Gems Alexandrite For Sale on 1stDibs

You are likely to find exactly the loose gems alexandrite you’re looking for on 1stDibs, as there is a broad range for sale. Finding an appealing loose gems alexandrite — no matter the origin — is easy, but Merkaba and Sarosi By Timeless Gems each produced a popular version that is worth a look. See these pages for a cushion cut iteration of this accessory, while there are also emerald cut cut and oval cut cut versions available here, too. Finding a loose gems alexandrite for sale for men should be easy, but there are 10 pieces available to browse for unisex as well as women, too.

How Much is a Loose Gems Alexandrite?

On average, a loose gems alexandrite at 1stDibs sells for $11,600, while they’re typically $9,360 on the low end and $15,120 for the highest priced versions of this item.

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.