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Loose Gemstone Lot

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Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
Located in Peshawar, PK
Natural Tourmaline Loose Gemstones Lot, sourced directly from Afghanistan. Each gemstone boasts a unique
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
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H 0.28 in W 0.18 in D 0.12 in Dm 0.26 in L 0.29 in
Black Spinel Hexagon Cut Stone Lot Natural Loose Gemstone
Located in Jaipur, RJ
Weight: 198.90 Carats Size: 4x11 To 5x20 MM Pieces: 17
Category

21st Century and Contemporary Sri Lankan Art Deco Loose Gemstones

Materials

Spinel, Black Spinel

Black Spinel Hexagon Cut Stone Lot Natural Loose Gemstone
Black Spinel Hexagon Cut Stone Lot Natural Loose Gemstone
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W 0.44 in D 0.2 in L 0.79 in
Natural Spessartite Orange Garnet Stones Lot Loose Gemstone From Africa
Located in Bangkok, TH
Gemstone Type Natural Spessartite Garnet Lot Weight 12.15 carats Size 0.80 to 4.0 carats Clarity
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

Mint Green Tourmaline Gemstones Lot Natural Loose Tourmaline from Afghanistan
Located in Bangkok, TH
Gemstone Type Mint Green Tourmaline Gemstones Lot Weight 7.45 carats Weight Range 0.6 to 1.30 carat
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Pink Tourmaline Loose Stone Lot Calibrated Size Natural Gemstones from Africa
Located in Bangkok, TH
Tourmaline Loose Stone Lot, a collection of natural gemstones sourced from Africa. Each gem in this
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Tourmaline

4.40 carats Pink Spinel Stones Lot Natural Loose Gemstones From Tajikistan
Located in Bangkok, TH
Gemstone Type Pink Spinel Gemstones Lot Weight 4.40 carats Individual Weight 0.90, 0.80, 0.70, 0.75
Category

21st Century and Contemporary Tajikistani Modern Loose Gemstones

Materials

Spinel

6.04 carats Colorful Stones Loose Sapphire Lot Natural Gemstones From Sri Lanka
Located in Bangkok, TH
breathtaking 6.04 carats Colorful Stones Loose Sapphire Lot, a dazzling collection of natural gemstones sourced
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

2.48 Carats Total Weight, Pear Cut Tsavorite Garnet Lot, 3 Loose Gemstones
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This set of loose gemstones, aka a "lot*" in the trade, has three unset African tsavorite garnet
Category

21st Century and Contemporary Loose Gemstones

Materials

Garnet, Tsavorite

10.15 carats Natural Brown Garnet Stones Lot Loose Gemstones From Mali Africa
Located in Bangkok, TH
Brown Garnet Stones Lot, a collection of loose gemstones sourced from the rich mines of Mali, Africa
Category

21st Century and Contemporary Malian Modern Loose Gemstones

Materials

Garnet

12.20 Carats Natural Tsavorite Green Garnet Gems Lot Loose Gemstones from Kenya
Located in Bangkok, TH
region in Kenya where they are found. Each loose gemstone in this lot possesses a unique charm, with a
Category

21st Century and Contemporary Kenyan Modern Loose Gemstones

Materials

Garnet, Tsavorite

20 Carats Natural Golden Hued Zircon Stone Lot Loose Gemstone From Pakistan
Located in Bangkok, TH
Gemstone Name Natural Golden Zircon Lot Weight 20 carats (1.68 carats each) Dimensions 6.96 x 6.86
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Zircon

Deep Color Natural Loose Blue Aquamarine Gemstone Lot Ring Size Aquamarine Gems
Located in Bangkok, TH
Color Natural Loose Blue Aquamarine Gemstones, perfect for creating a stunning ring that will leave a
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Aquamarine

26.60 Carats Heart Shaped Loose Red Garnet Lot Madagascar's Gemstone (In Box)
Located in Bangkok, TH
gemstone that captivates with its deep, rich red hue. This exquisite gem boasts a striking heart-shaped cut
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Garnet

3.48 carats Multi-Color Stones Lot Natural Loose Sapphire Gemstones From Africa
Located in Bangkok, TH
Gemstone Type Colorful Natural Sapphire From Africa Weight 3.48 carats Each weight 0.78, 0.99, 0.85
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Sapphire

10.15 Carat Cushion Shape Natural Loose Green Peridot Gemstone Lot From Pakistan
Located in Peshawar, PK
Gemstone Type : Peridot Weight : 10.15 Carats Size: 2.80, 2.80, 2.40, 2.10 Carats Origin : Suppat
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Peridot

9.60 Carat Natural Loose Tourmaline Lot For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline Lot Weight: 9.60 Carats Sizes: 1.25 to 2.20 Carat Colour: Mint Green And White
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

7.15 Carat Natural Loose Tourmaline Lot For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline lot Weight: 7.15 Carats Sizes: 0.55 to 1.10 Carats Treatment: Non Certificate: On
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.65 Natural Loose Multi Shape Tourmaline Lot Gems For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline lot Weight: 6.65 Carats Sizes: 1.25 to 1.75 Carats Treatment: Non Certificate
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Gorgeous Natural Loose Rhodolite Garnet Multi Shape 4.30 Carat Gem Lot
Located in Peshawar, PK
Loose Rhodolite Lot Weight: 4.30 Carats Size: 0.80 to 0.95 Carats Origin: Tanzania Shape: Multi
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Garnet, Rhodolite

3.85 Carats Greenish Blue Tourmaline Lot Natural Gemstones From Afghanistan
Located in Bangkok, TH
Gemstone Type Greenish Blue Tourmaline Lot Weight 3.85 carats Weight (Left) 1.30 carat Weight
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

11.40 Carats Pink Rhodolite Garnet Lot Natural Gemstones From Africa
Located in Bangkok, TH
Gemstone Type Pink Rhodolite Garnet Lot Weight 11.40 carats Weight 1.25 carats Clarity SI to Eye
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet, Rhodolite

3.64ct Deep Orange Tourmaline Pear Cut Loose Gemstone
Located in Birmingham, GB
3.64ct Deep Orange Tourmaline Pear Cut Loose Gemstone 12.5 x 9mm Deep Orange Tourmaline Gemstone
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

12.40 Carats Fanta Natural Loose Hessonite Smoky Garnet Lot For Jewelry Making
Located in Peshawar, PK
Treatment: Non Clarity: Smoky A 12.40-carat Hessonite Garnet lot is a remarkable collection of gemstones
Category

20th Century Tanzanian Arts and Crafts Loose Gemstones

Materials

Garnet, Hessonite

6.90 Carats Multi Shape Natural Loose Tourmaline Lot Gem For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline Lot Weight: 6.90 Carats Sizes: 0.40 to 1.65 Carats Origin: Afghanistan
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Yellow Sapphire 2.54 Ct Square Unheated, Loose Gemstone
Located in South Melbourne, AU
. A certified unheated natura Ceylon yellow sapphire with lots of pizzazz. This natural yellow
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

Yellow Sapphire 2.54 Ct Square Unheated, Loose Gemstone
Yellow Sapphire 2.54 Ct Square Unheated, Loose Gemstone
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W 0.26 in D 0.23 in L 0.27 in
4.40 Carats Natural Genuine Loose Tourmaline Lot Emerald Shape For Jewellery Set
Located in Peshawar, PK
Loose Tourmaline Weight: 4.40 Carats Size: 1.05 to 1.75 Carats Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Art Nouveau Loose Gemstones

Materials

Tourmaline

Gorgeous Multi Shape Natural Loose Rhodolite Garnet Lot 5.15 Carats For Jewelry
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 5.15 Carats Size: 0.60 to 0.80 Carats Origin: Tanzania Shape
Category

21st Century and Contemporary Tanzanian Anglo-Indian Loose Gemstones

Materials

Garnet, Rhodolite

Stunning 7.30 Carats Loose Green Tourmaline Lot Wifi Set For Jewelry Making
Located in Peshawar, PK
Tourmaline Lot Weight: 7.30 Carats Size: 1 to 2 Carats Origin: Afghanistan Color: Green Shape
Category

2010s Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

14.95 carats Multi Color Natural Tourmaline Lot Mixed Cut Afghanistani Gemstones
Located in Bangkok, TH
Gemstone Type Multi Color Natural Tourmaline Lot Weight 14.95 carats Weight Range 0.70 to 1.50
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Faceted Multi Colors Tourmaline Lot Mixed Cut Natural Gemstone from Afghanistan
Located in Bangkok, TH
Gemstone Faceted Multi Colors Tourmaline Lot Weight 7.45 carats Individual Weight 1.95, 1.90, 1.35
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Multicolor Lagoon, Pink, Green & Neon Tourmaline Gemstones Lot, 5.60 Ct-Cushion
Located in Peshawar, PK
demand Discover the allure of Afghanistan's finest tourmaline gemstones in this exquisite lot
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

10.05 Carats Faceted Pink Ruby Stone Lot Natural Gemstones from Afghanistan
Located in Bangkok, TH
natural gemstones, this 10.05-carat faceted Pink Ruby Stone Lot hails from the rich mines of Afghanistan
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Ruby

Gorgeous Loose Lagoon Tourmaline Lot 5.20 Carat from Kunar Mine for Ring Jewelry
Located in Peshawar, PK
Gemstone Type : Tourmaline Weight : 5.20 Carats Sizes: 1.15 to 1.40 Carat Origin : Kunar
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Rare Darkish Inky Blue Natural Tourmaline Gemstones Lot, 4.85 Ct for Jewelry
Located in Peshawar, PK
reveal themselves in the form of our exquisite 4.85 Carat Dark Inky Blue Tourmaline Gemstones Lot
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

3.50 Carats Stones Multiple Colors Sapphire Natural Gemstone Lot From Sri Lanka
Located in Bangkok, TH
Gemstone Type Multiple Colors Sapphire Lot Weight 3.50 carats Average Weight 0.75, 0.70, 0.55, 0.55
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

Red Color Multi Shaped Cuts Natural Rhodolite Garnet Lot Multi Size Gemstones
Located in Bangkok, TH
The Red Color Multi Shaped Cuts Natural Rhodolite Garnet Lot is a captivating ensemble of gemstones
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet, Rhodolite

Parti Sapphire Lot 5.55 carats 8 Piece Set Natural Gemstones from Madagascar
Located in Bangkok, TH
your gemstone collection with our exquisite Parti Sapphire 8-piece lot from Madagascar. Each gemstone
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Sapphire

1.80ct Fine Olive Green Tourmaline Oval Cut Loose Gemstone 8x6.8mm
Located in Birmingham, GB
1.80ct Fine Olive Green Tourmaline Oval Cut Loose Gemstone 8x6.8mm Natural Olive Green Tourmaline
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Fine 5.51ct Deep Orange Tourmaline Pear Teardrop Cut Loose Gemstone
Located in Birmingham, GB
Fine 5.51ct Deep Orange Tourmaline Pear Teardrop Cut Loose Gemstone 15 x 10.5mm Fine Deep Orange
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Pink Spinel Gemstone Lot 4.50 Carats Each Weight 1.60, 1.15, 1.05 and 0.70 Carat
Located in Bangkok, TH
Pink Spinel Gemstone lot, available for sale at wholesale price natural high quality pink spinel
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Medium Cornflower Blue Sapphire 2.21 Ct Round Unheated Ceylon, Loose Gemstone
Located in South Melbourne, AU
Perfect for that alternative solitaire engagement ring with lots of credentials. A large 2 carat
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

9.5 carat Fire Opal Lot
Located in Ciudad De México, MX
Lot of Loose Gemstones (7 pieces) 9.50 Carat in total Oval, marquise and brilliant cut stones Fire
Category

2010s Mexican Loose Gemstones

Materials

Opal, Fire Opal

9.5 carat Fire Opal Lot
9.5 carat Fire Opal Lot
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H 0.22 in W 0.33 in L 0.44 in
17.55 Carat Star Sapphires Lot
Located in Bangkok, TH
Presenting this 17.55 Carat Star Sapphires Lot, a breathtaking collection that encapsulates the
Category

21st Century and Contemporary Loose Gemstones

Materials

Star Sapphire

5.6 carat Opal lot (12 pieces)
Located in Ciudad De México, MX
Lot of Loose Gemstones (12 pieces) 5.60 Carat in total Cabochon cut stones Fire Opal Different
Category

2010s Mexican Loose Gemstones

Materials

Opal, Fire Opal

5.6 carat Opal lot (12 pieces)
5.6 carat Opal lot (12 pieces)
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H 0.1 in W 0.26 in L 0.32 in
Gorgeous Clean Faceted Tourmaline Lot Set For Jewelry Making 2.70 Carats
Located in Peshawar, PK
Faceted Tourmaline Lot Weight: 2.70 Carats Size: 0.60 to 0.85 Carats Origin: Kunar Afghanistan
Category

21st Century and Contemporary Afghan Baroque Revival Loose Gemstones

Materials

Multi-gemstone, Tourmaline

5.35 Carat London Blue Topaz Lot
Located in Hua Hin, TH
A Blue Topaz lot including 9 gems amounting to a total of 5.35 carats in weight. These blue topazes
Category

2010s Unknown Loose Gemstones

Materials

Topaz, Blue Topaz

5.35 Carat London Blue Topaz Lot
5.35 Carat London Blue Topaz Lot
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W 0.21 in D 0.14 in L 0.21 in
5.55 Carat London Blue Topaz Lot
Located in Hua Hin, TH
A Blue Topaz lot including 9 gems amounting to a total of 5.55 carats in weight. These blue topazes
Category

2010s Unknown Loose Gemstones

Materials

Topaz, Blue Topaz

5.55 Carat London Blue Topaz Lot
5.55 Carat London Blue Topaz Lot
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W 0.21 in D 0.14 in L 0.21 in
5.51 Carat Round Fancy Sapphire Lot
Located in Hua Hin, TH
A wonderful lot of 56 2.7mm Natural Fancy Sapphires that lay in an orderly floral formation. Though
Category

2010s Unknown Loose Gemstones

Materials

Sapphire, Blue Sapphire, Yellow Sapphire, Green Sapphire, Purple Sapphire

5.51 Carat Round Fancy Sapphire Lot
5.51 Carat Round Fancy Sapphire Lot
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W 0.11 in L 0.11 in
3.13 Carat Blue Sapphire Cabochon Lot
Located in Hua Hin, TH
A lot of 8, 4mm blue sapphire cabochons amounting to a total of 3.13 carats in weight. Weight
Category

2010s Unknown Loose Gemstones

Materials

Blue Sapphire

3.13 Carat Blue Sapphire Cabochon Lot
3.13 Carat Blue Sapphire Cabochon Lot
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W 0.16 in D 0.1 in L 0.16 in
5.05 carats Celestial Blue Indicolite Natural Tourmaline Lot From Afghanistan
Located in Bangkok, TH
Gemstone Type Celestial Blue Indicolite Tourmaline Lot Weight 5.05 carats Weights 1.10, 1.15, 1.40
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Indicolite

Opal Carved Fish Gemstone
Located in Boca Raton, FL
Certificate of authenticity comes with purchase, this fish carved gemstone is one of a kind! ABOUT
Category

21st Century and Contemporary Loose Gemstones

Materials

Opal

1.41ct GIA certified fancy yellow diamond loose
Located in Boca Raton, FL
ask questions, we try our best to add a lot of photos, description and videos to our items so that its
Category

21st Century and Contemporary Loose Gemstones

Materials

Yellow Diamond

2.10 Carats Natural Pinkish Red Rubellite Tourmaline Lot Gems For Jewelry Making
Located in Peshawar, PK
Rubellite Tourmaline Lot Weight: 2.10 Carats Sizes: 0.20 to 0.60 Carats Origin: Afghanistan
Category

2010s Afghan Arts and Crafts Loose Gemstones

Materials

Rubelite, Tourmaline

Huge Loose GIA certified heart brilliant diamond 4.57ct
Located in Boca Raton, FL
ask questions, we try our best to add a lot of photos, description and videos to our items so that its
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

Multi Color Mix Tourmaline Lot 0.45 to 1.05 carats Natural Gems From Afghanistan
Located in Bangkok, TH
Gemstone Name Multi-Color Mix Tourmaline Lot Weight 4.95 carats Weight Range 0.45 to 1.05 carats
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

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 fancy light pink heart diamond loose 1.03ct
Located in Boca Raton, FL
jewelry workmanships. Feel free to contact us and ask questions, we try our best to add a lot of photos
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, Pink Diamond

Fine Vivid Pink Purple Tourmaline 3.23ct Oval Cut Loose Gem
Located in Birmingham, GB
Fine Vivid Pink Purple Tourmaline 3.23ct Oval Cut Loose Gem 10 x 8.3mm Fine Pink Purple Tourmaline
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

7.47 Carat Light Mint Green Loose Gem Cushion Cut Tourmaline
Located in Stamford, CT
Unique Custom cut, 7.47carat mint green Tourmaline. Excellent brilliance and lots of reflection
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

GIA certified diamond 1.01ct Fancy PInk diamond loose NATURAL COLOR
Located in Boca Raton, FL
Loose GIA diamond fancy pink, will comes with all certififcates. Natural Diamond(s): Color: Fancy
Category

21st Century and Contemporary Loose Gemstones

Materials

Pink Diamond

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Loose Gemstone Lot For Sale on 1stDibs

Surely you’ll find the exact loose gemstone lot you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using 10k gold, 14k gold and 15k gold. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a loose gemstone lot from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 20th Century while another version may have been produced as recently as the 21st Century. A loose gemstone lot from Gems and Jewels UK and Sarosi By Timeless Gems — each of whom created a beautiful version of this treasured accessory — is worth considering. A loose gemstone lot can make for a versatile accessory, but a selection from our variety of 4 tourmaline versions can add an especially stylish touch. See these pages for an oval cut iteration of this accessory, while there are also pear cut cut and emerald cut cut versions available here, too. If you’re browsing our inventory for a loose gemstone lot, you’ll find that many are available today for men, but there are still pieces to choose from for unisex and women.

How Much is a Loose Gemstone Lot?

On average, a loose gemstone lot at 1stDibs sells for $121, while they’re typically $28 on the low end and $79,385 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.