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GIA Certified 1.06 Carat Natural Alexandrite, Alexandrite Loose Gemstone
Located in Los Angeles, CA
Treat yourself to a perfect gift for this holiday season. Get a GIA certified Alexandrite gemstone
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

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 2.14 Carat Natural Brazilian Alexandrite, Loose Alexandrite
Located in Los Angeles, CA
The world's most brilliant gemstone, natural Brazilian Alexandrite 2.14 carats with GIA Report. It
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 1.00 Carat Natural Alexandrite, Loose Precious Gemstone
Located in Los Angeles, CA
Treat yourself to a perfect gift for this holiday season. Get a GIA certified Alexandrite gemstone
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 3.47 Carat Natural Alexandrite Oval Shape, Alexandrite Loose Stone
Located in Los Angeles, CA
Natural Alexandrite is the most sought-after gemstone among jewelry lovers. Wearing natural
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 3.99 Carat Natural Sri Lankan Alexandrite, Alexandrite Loose Gem
Located in Los Angeles, CA
Sri Lanka and is known as a Sri Lankan Alexandrite. It has a brilliant bluish green/ reddish purple
Category

21st Century and Contemporary Sri Lankan 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

GIA Certified 3.52 Carat Natural Alexandrite Cushion Shape, Loose Alexandrite
Located in Los Angeles, CA
style. Loose Alexandrite is a brilliant cut gemstone with good-color and clarity, which makes it a very
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

Alexandrite Oval, .86 Carat Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
complimentary design session. We have a large selection of loose alexandrites in our inventory. Please inquire
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl

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 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
Here's a beauty for you to admire. Natural Alexandrite 3.57 carats with GIA report. A really
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Alexandrite 0.56 Carats
Located in Los Angeles, CA
you purchased is a genuine natural Alexandrite 0.56 carats. GIA Report states that the Pear Brilliant
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified Natural Alexandrite 0.56 Carats
GIA Certified Natural Alexandrite 0.56 Carats
Free Shipping
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
Free Shipping
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
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
Free Shipping
W 0.27 in D 0.24 in L 0.36 in
GIA Certified Natural Alexandrite 5.10 Carats
Located in Los Angeles, CA
Our Natural Alexandrite 5.10 carats with GIA Report are a joy to behold, and can make a great
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
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
The description outlines a Natural Alexandrite weighing 0.78 carats, shaped in a round with
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
Free Shipping
W 0.22 in D 0.12 in L 0.23 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
Free Shipping
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
Free Shipping
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
Free Shipping
W 0.18 in D 0.14 in L 0.23 in
GIA Certified 21.85 Carat Natural Color Change Alexandrite
Located in New York, NY
This stunning oval over 21 carat genuine alexandrite – a rare color-change variety of chrysoberyl
Category

2010s Malagasy Loose Gemstones

Materials

Alexandrite

GIA Certified 21.85 Carat Natural Color Change Alexandrite
GIA Certified 21.85 Carat Natural Color Change Alexandrite
No Reserve
W 0.69 in D 0.45 in L 0.53 in
GIA Certified 2.08 Carats Color Changes Alexandrite
Located in Los Angeles, CA
This exquisite natural Alexandrite, weighing 2.08 carats, boasts an elegant oval shape with
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

GIA Certified 2.08 Carats Color Changes Alexandrite
GIA Certified 2.08 Carats Color Changes Alexandrite
Free Shipping
W 0.26 in D 0.17 in L 0.36 in
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
Free Shipping
W 0.2 in D 0.18 in L 0.26 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
Free Shipping
W 0.28 in D 0.25 in L 0.31 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
Free Shipping
W 0.22 in D 0.19 in L 0.28 in
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

GIA Certified 9.85 Carat Natural Color Change Alexandrite
Located in New York, NY
This stunning oval nearly 10 carat genuine alexandrite – a rare color-change Alexandrite of this
Category

2010s Sri Lankan Loose Gemstones

Materials

Alexandrite

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 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
Free Shipping
W 0.21 in D 0.13 in L 0.26 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 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
Free Shipping
W 0.21 in D 0.14 in L 0.31 in
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

0.22ct Alexandrite deep green to pinkish red color change rare gemstone
Located in bangkok, TH
Top Alexandrite 0.22ct deep green to pinkish red color change rare gemstone Weight: 0.22ct Size
Category

2010s Loose Gemstones

Materials

Alexandrite

Alexandrite GIA Certified Natural Color Change Blue Green Purple
Located in New York, NY
00This stunning alexandrite gemstone has been certified by GIA and boasts a natural color change
Category

2010s American 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

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

GIA Certified 1.02 Carat Natural Brazil Alexandrite, June Birthstone Gift
Located in Los Angeles, CA
you purchased is a genuine natural Brazil Alexandrite 1.02 carats. GIA Report states that the pear
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Alexandrite

2.39 Carat Genuine and Natural Oval-Shaped Certified Brazilian Alexandrite
Located in New York, NY
A beautiful and fine-quality oval-shaped mixed-cut Brazilian Alexandrite with 90%-100% (Prominent
Category

20th Century Brazilian Loose Gemstones

Materials

Alexandrite

GIA Certified 0.30 Carat Natural Brazilian Color Change Alexandrite Gemstone
Located in Los Angeles, CA
Treat yourself to a perfect gift for this holiday season. Get a GIA certified Alexandrite gemstone
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
you purchased is a genuine natural Alexandrite 0.77 carats. GIA Report states that the oval Brilliant
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 3.05 Carat Natural Alexandrite, Precious Stone for Jewelry Making
Located in Los Angeles, CA
Discover the magical world of Alexandrite. It speaks for itself with its captivating green and blue
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

GIA Certified 1.11 Carat Natural Brazilian Color Change Alexandrite Oval Shape
Located in Los Angeles, CA
This is a natural Brazilian Alexandrite 1.11 carats with GIA Report and Certificate. All gemstones
Category

21st Century and Contemporary Brazilian 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

0.64ct Oval Cabochon Yellowish Green to Pink-Purple Cat's Eye Alexandrite from I
Located in Toronto, Ontario
Description: Gem Type: Cat's Eye Alexandrite Number of Stones: 1 Weight: 0.64 cts Measurements
Category

2010s Indian 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
This 7.95 carat oval-shaped sphene is the perfect example of a rare collector gemstone! Displaying sphene's characteristic dispersion to a superior degree, it shows off brilliant fla...
Category

21st Century and Contemporary Artist Loose Gemstones

Materials

Alexandrite

2.40 Carat Gorgeous Fire Loose Sphene Gemstone From Pakistan Mine Oval Shape
Located in Peshawar, PK
Faceted Sphene Weight: 10.5x7.2x5.1 Mm Origin: Warsak Pakistan Color: Yellow Shape: Oval Treatment: Non Certficate: On Customer Demand Sphene, also known as titanite, is a mineral...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Alexandrite, Hematite

Tanzanite Earrings Loose Gemstones 3.34 Carat Square Octagons
By Merkaba
Located in Beverly Hills, CA
Special 3.34 carat Tanzanite pair of square octagon loose gemstones, offered unmounted to a very
Category

21st Century and Contemporary Tanzanian Contemporary Loose Gemstones

Materials

Tanzanite

Tanzanite Ring Stone 56 Carat Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exceptional and coveted 56.77 carat Tanzanite square cushion loose gemstone, offered unmounted to a
Category

21st Century and Contemporary Tanzanian Contemporary Loose Gemstones

Materials

Tanzanite

Tanzanite Ring Stone 56 Carat Cushion Loose Gemstone
Tanzanite Ring Stone 56 Carat Cushion Loose Gemstone
Free Shipping
W 0.9 in D 0.58 in L 0.9 in
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Alexandrite Loose For Sale on 1stDibs

Surely you’ll find the exact alexandrite loose you’re seeking on 1stDibs — we’ve got a vast assortment for sale. For this particular piece, 1 Carat and 1.5 Carat are consistently popular carat weights. A alexandrite loose from Merkaba, Sarosi By Timeless Gems and Harbor Diamonds — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes cushion cut and emerald cut alternatives. Most of our alexandrite loose for sale are for men, but there are 13 pieces available to browse for women.

How Much is a Alexandrite Loose?

Prices for a alexandrite loose can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $5,400 and can go as high as $23,378, while this accessory, on average, fetches $14,760.

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.