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GIA Certified 0.63 ct Mozambique Loose Paraiba Tourmaline, Blue-Green Tourmaline
Located in Los Angeles, CA
beautiful gems in nature. With its intense, vivid blue-green color and fine clarity it’s no wonder that this
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Tourmaline, Paraiba

1.20 Carat Paraiba Tourmaline Loose Stone in Nylon Green and Blue
Located in London, GB
1.20 Carat Paraiba Tourmaline Loose stone in Nylon Green and Blue Website video uploading might
Category

2010s Loose Gemstones

Materials

Tourmaline, Paraiba

6.14 Carat Tourmaline Gemstone, Cushion Cut Blue Green Loose Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Color: Blue Green Origin: Afghanistan Dimensions (mm): 11.3 x 9.1 x 8.3 Weight
Category

20th Century Afghan Loose Gemstones

Materials

Tourmaline

Blue Green Tourmaline Ring Gem 5.05 Carat Cushion Unmounted Loose Gemstone
By Tamir
Located in Beverly Hills, CA
5.05 carat unisex Blue-Green Tourmaline cushion loose gemstone, offered unmounted to someone very
Category

21st Century and Contemporary Contemporary Loose Gemstones

Materials

Tourmaline

Blue Green Tourmaline Ring Gem 11.35 Carat Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Magnificent 11.35 carat Bluish Green Tourmaline emerald cut gem, offered loose to an avid gemstone
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

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

28.75 Cts Natural Loose Blue Green Bicolor Tourmaline For Necklace Jewellery
Located in Peshawar, PK
: Bicolor Blue Green Treatment: Non Shape: Emerald Certificate: on customer demand . Bicolour tourmaline
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Rare Blue Green Cushion Cut Natural Tourmaline Loose Gemstone, 4.05 Ct-Afghani
Located in Peshawar, PK
Behold the rare beauty of our Rare Blue Green Cushion Cut Natural Tourmaline Loose Gemstone
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Green Blue Tourmaline Ring Gem 4.35 Carat Unmounted Kite Shape Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Exotic greenish blue 4.35 carat "loupe clean" Tourmaline loose gemstone. This kite shaped gem is
Category

21st Century and Contemporary Namibian Contemporary Loose Gemstones

Materials

Tourmaline

3.05 Carat Emerald Cut Natural Loose Open Green Loose Tourmaline Ring Gemstone
Located in Peshawar, PK
tourmaline is the Paraíba tourmaline, known for its intense, neon-blue or green hues. These gems are highly
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Rare Blue Green Natural Tourmaline Loose Gemstone, 4.35 Ct-Cushion Cut for ring
Located in Peshawar, PK
Gemstone Type: Tourmaline Weight: 4.35 Carats Dimensions: 10.34 x 7.88 x 6.59 Color: Blue Green
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

5.20 Carat Natural Loose Bright Green Tourmaline Emerald Shape
Located in Peshawar, PK
Loose Bright Green Tourmaline Weight: 5.20 Carats Dimension: 12.4 x 8.7 x 5.7 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

5.20 Carat Natural Loose Bright Green Tourmaline Emerald Shape
5.20 Carat Natural Loose Bright Green Tourmaline Emerald Shape
Free Shipping
W 0.35 in D 0.23 in L 0.49 in
1.45 Carats Natural Loose Mint Green Tourmaline Ring Gemstone
Located in Peshawar, PK
variety of the tourmaline gemstone family known for its delicate greenish-blue to bluish-green hues
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.45 Carats Natural Loose Mint Green Tourmaline Ring Gemstone
1.45 Carats Natural Loose Mint Green Tourmaline Ring Gemstone
Free Shipping
W 0.24 in D 0.22 in L 0.25 in
2.80 Carats Natural Loose Dark Green Chrome Tourmaline Emerald Shape
Located in Peshawar, PK
Loose Tourmaline Weight: 2.80 Carats Dimension: 9.5x7.3x4.4 Mm Origin; Africa Shape: Emerald
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Chrome Tourmaline, Tourmaline

6.25 Carat Natural Loose Blueish Green Tourmaline Asscher Cut Gem
Located in Peshawar, PK
Loose Bright Green Tourmaline Weight: 6.25 Carats Dimension: 10.1 x 10 x 8.5 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
Located in Peshawar, PK
captivating variety of tourmaline renowned for its delicate greenish-blue or bluish-green hues reminiscent of
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
Free Shipping
W 0.41 in D 0.32 in L 0.43 in
2.40 Carats Natural Loose Green Tourmaline With Lagoon Shade Emerald Shape
Located in Peshawar, PK
, green, blue, red, and even black. Brazil is one of the world's leading producers of tourmaline, with
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline, Chrome Tourmaline

Beauteous 1.90 Cts Blueish Green Loose Tourmaline Ring Gemstone Afghan Mine
Located in Peshawar, PK
green tourmaline is believed to possess healing and metaphysical properties. The calming tones of blue
Category

21st Century and Contemporary Afghan Artist Loose Gemstones

Materials

Tourmaline

Bluish Green Tourmaline 3.75 carats Emerald Cut Natural Loose African Gemstone
Located in Bangkok, TH
Shape Octagon Cut Emerald The bluish green Tourmaline is a stunning 3.75 carat gemstone with an
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Tourmaline

Beauteous 1.10 Carats Loose Blueish Green Tourmaline Asscher Cut Ring Gemstone
Located in Peshawar, PK
tourmaline, often referred to simply as "blue-green tourmaline," is a captivating variety of tourmaline known
Category

21st Century and Contemporary Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

Mint Green Tourmaline 6.10 Carats Emerald Cut Natural Afghani Loose Gemstone
Located in Bangkok, TH
color but also authentic origin. tourmaline stone paraiba tourmaline green tourmaline indicolite
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Bluish Green Tourmaline 3.20- carats Cushion Cut Natural Loose African Gemstone
Located in Bangkok, TH
, Very Slightly Included) Shape Cushion Cut Fancy Cushion The bluish green Tourmaline is a stunning
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Tourmaline

1.65 Carats Natural Loose Mint Green Tourmaline Oval Shape Ring Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 1.65 Carats Dimension: 8.1x5.9x4.7 Mm Origin: Kunar Afghanistan Shape
Category

Late 20th Century Afghan Baroque Loose Gemstones

Materials

Tourmaline

Emerald Shape Natural Loose Green Tourmaline 2.60 Carat Earth Mine Gem
Located in Peshawar, PK
Loose Green Tourmaline Weight: 2.60 Carat Dimension: 9 x 5.8 x 5.3 Mm Colour: Dark Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.95 Carats Natural Loose Blueish Green Tourmaline Emerald Cut Ring Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 2.95 Carats Dimension: 7.5x7.3x6.4 Mm Origin: Afghanistan Color: Blue
Category

21st Century and Contemporary Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

Pretty Natural Loose Green Lagoon Tourmaline 3.55 Carat Emerald Shape Gemstone
Located in Peshawar, PK
Loose Green Lagoon Tourmaline Weight: 3.55 Carats Dimension: 11 x 7 x 5.4 Mm Colour: Green Lagoon
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

5.20 Carat Pretty Natural Loose Green Lagoon Tourmaline Cushion Shape Gemstone
Located in Peshawar, PK
Loose Green Lagoon Tourmaline Weight: 5.20 Carats Dimension: 10.7 x 9 x 7 Mm Colour: Green Lagoon
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Gorgeous Loupe Clean Natural Loose Indicolite Blue Tourmaline 15 Carats
Located in Peshawar, PK
conclusion, indicolite tourmaline is a captivating gemstone cherished for its striking blue and blue-green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline, Indicolite

1.75 Carat Natural Loose Green Tourmaline Cushion Gem For Jewellery Making
Located in Peshawar, PK
Loose Green Tourmaline Weight: 1.75 Carats Dimension: 6.1 x 7.6 x 4.7 Mm Colour: Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.05 Cts Natural Loose Blueish Green Tourmaline Emerald Cut Ring Gemstone
Located in Peshawar, PK
Shape: Emerald Certificate: On Customer Demand . Blueish green tourmaline, also known as blue-green
Category

21st Century and Contemporary Malagasy Baroque Revival Loose Gemstones

Materials

Tourmaline

1.25ct Square Cut Blue Green Tourmaline Gemstone
By Hannaboya
Located in Sheridan, WY
Elevate your jewelry designs with the serene beauty of our 1.25ct Square Blue Green Tourmaline
Category

2010s African Contemporary Loose Gemstones

Materials

Tourmaline

2.60 Carats Natural Loose Green Tourmaline With Lagoon Shade Emerald Shape
Located in Peshawar, PK
source of tourmaline, particularly the vibrant green and blue-green varieties. Other countries like
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.65 Carats Natural Loose Lagoon Green Tourmaline Cushion Cut Afghan Mine
Located in Peshawar, PK
simply as lagoon tourmaline, is a captivating gemstone prized for its stunning, vibrant green-blue color
Category

2010s Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Stunning 6.10 Carats Natural Loose Tourmaline Light Green Color Ring Gem
Located in Peshawar, PK
color variations, with Brazil being known for its vivid green and blue tourmalines, while Afghanistan
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.50 Carat Natural Vibrant Green Loose Tourmaline Ring Gem Emerald Shape
Located in Peshawar, PK
Loose Tourmaline Weight: 1.50 Carats Dimension: 7.4x5.1x4.8 Mm Origin; Afghanistan Shape: Emerald
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.25 Carats SI Clarity Natural Loose Green Tourmaline With Lagoon Shade
Located in Peshawar, PK
Loose Tourmaline Weight: 2.25 Carats Dimension: 8.9x6.3x5.1 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.95 Carats Natural Black Green Loose Bicolour Tourmaline Emerald Shape Ring Gem
Located in Peshawar, PK
Loose Tourmaline Weight: 1.95 Carats Dimension: 9.8x5.2x4.3 Mm Origin; Skardu Pakistan Shape
Category

Antique 15th Century and Earlier Pakistani Art Nouveau Loose Gemstones

Materials

Tourmaline, Chrome Tourmaline

GIA Certified 0.80 Carat Paraiba Tourmaline, Green-Blue Tourmaline Stone
Located in Los Angeles, CA
beautiful gems in nature. With its intense, vivid green-blue color and fine clarity it’s no wonder that this
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Tourmaline, Paraiba

4.61 carats Loose Greenish Blue Tourmaline Cushion Cut Natural Afghani Gemstone
Located in Bangkok, TH
blue tourmaline tourmaline gemstone green tourmaline stone tourmaline price
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

4.97 carats Greenish Blue Loose Tourmaline Cushion Cut Natural Afghani Gemstone
Located in Bangkok, TH
exquisite gemstone. tourmaline tourmaline stone green tourmaline tourmaline jewellery blue tourmaline
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.25 carats Lagoon Blue Loose Tourmaline Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Cut Mix Cushion The 3.25 carat Lagoon Blue Tourmaline is a mesmerizing gemstone, boasting a Mix
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Tiffany Blue Loose Tourmaline 1.65 Carats Baguette Cut Natural Afghan Gemstone
Located in Bangkok, TH
Tiffany Blue Tourmaline is a truly remarkable gemstone, weighing 1.65 carats and featuring an exquisite
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Greenish Blue Tourmaline 2.70 carats Emerald Cut Natural Afghani Loose Gemstone
Located in Bangkok, TH
Greenish Blue Tourmaline, a 2.70 carat gemstone of unrivaled natural beauty. This Afghani treasure boasts
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Unique 1.80 Carats Natural Loose Light Blue Tourmaline Gem For Ring
Located in Peshawar, PK
from Brazil is celebrated for its vibrant neon blue and green hues, while the watermelon tourmaline
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.78 carats Loose Mint Green Tourmaline Step Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Cushion The 6.78 carats Mint Green Tourmaline is an exquisite natural gemstone sourced from
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Mint Green Loose Tourmaline 2.25 carats Step Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
stone green tourmaline tourmaline birthstone tourmaline jewellery blue tourmaline tourmaline gemstone
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Neon Blue Loose Tourmaline 1.65 Carats Scissors Cut Natural Afghan Gemstone
Located in Bangkok, TH
tourmaline stone tourmaline birthstone tourmaline jewellery blue tourmaline tourmaline gemstone green
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Loupe Clean 1.90 Carats Loose Green Tourmaline With Lagoon Shade Baguette Cut
Located in Peshawar, PK
sought-after types of tourmaline is the Paraíba tourmaline, known for its intense, neon-blue or green
Category

2010s Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

1.85 Carats Natural Loose Greenish Blue Tourmaline Ring Gem Afghanistan Mine
Located in Peshawar, PK
its varied hues. Tourmalines can be found in shades of pink, green, blue, yellow, and even black. One
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.85 Carat Natural Loose Green Lagoon Tourmaline Long Cushion Shape Kunar Mine
Located in Peshawar, PK
tourmaline, derives its name from its striking blue-green color reminiscent of the tranquil waters of a
Category

21st Century and Contemporary Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

Seafoam Blue Loose Tourmaline 1.90 Carats Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
-foam Green Tourmaline promises to be a cherished addition to any jewelry collection, a testament to
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.40 Carat Natural Loose Green Lagoon Tourmaline Cushion Shape Gem For Ring
Located in Peshawar, PK
Loose Green Lagoon Tourmaline Weight: 3.40 Carats Dimension: 8.3 x 7.2 x 6.5 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.85 Carat Natural Loose Green Tourmaline Emerald Shape Gem From Earth Mine
Located in Peshawar, PK
Loose Green Tourmaline Weight: 2.85 Carats Dimension: 9.4 x 7.2 x 4.4 Mm Colour: Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

4.60 Carat Natural Loose Green Lagoon Tourmaline Cushion Shape Gem For Ring
Located in Peshawar, PK
Loose Green Lagoon Tourmaline Weight: 4.60 Carats Dimension: 10.2 x 8 x 6.4 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.50 Carat Natural Loose Mint Green Tourmaline Cushion Shape Gem For Ring
Located in Peshawar, PK
Loose Mint Green Tourmaline Weight: 2.50 Carats Dimension: 7.1 x 6.6 x 6.1 Mm Colour: Mint Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Natural Loose Green Tourmaline Pair 8.0 Carat Emerald Shape Gem For Earrings
Located in Peshawar, PK
Loose Green Tourmaline Pair Weight: 8.0 Carats Dimension: 10.5 x 7.1 x 6.5 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.15 Carat Natural Loose Bright Green Tourmaline Emerald Shape Gem For Jewellery
Located in Peshawar, PK
Loose Bright Green Tourmaline Weight: 3.15 Carats Dimension: 13 x 6 x 4.5 Mm Colour: Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.05 Carat Natural Loose Green Tourmaline Oval Shape Gem For Jewellery Making
Located in Peshawar, PK
Loose Green Tourmaline Weight: 2.05 Carats Dimension: 7.9 x 6.9 x 6.2 Mm Colour: Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.00 Carat Natural Loose Mint Green Tourmaline Cushion Shape Gem For Ring
Located in Peshawar, PK
Loose Mint Green Tourmaline Weight: 1.00 Carats Dimension: 5.6 x 5.3 x 4.4 Mm Colour: Mint Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.45 Carat Natural Loose Mint Green Tourmaline Emerald Shape Gem For Ring
Located in Peshawar, PK
Loose Mint Green Tourmaline Weight: 1.45 Carats Dimension: 7.8 x 5.2 x 4 Mm Colour: Mint Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

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Loose Blue Green Tourmaline For Sale on 1stDibs

You are likely to find exactly the loose blue green tourmaline you’re looking for on 1stDibs, as there is a broad range for sale. Our collection of these items for sale includes 1 vintage editions and 10 modern creations to choose from as well. Making the right choice when shopping for a loose blue green tourmaline may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. As it relates to this specific piece, our collection includes designs that are universally popular, but 3.5 Carat and 4 Carat carat weights, specifically, are sought with frequency. There have been many well-made iterations of the classic loose blue green tourmaline over the years, but those made by Merkaba, Tamir and Sarosi By Timeless Gems are often thought to be among the most beautiful. An emerald cut version of this piece has appeal, but there are also cushion cut and marquise cut versions for sale. Finding a loose blue green tourmaline for sale for women should be easy, but there are 9 pieces available to browse for unisex as well as men, too.

How Much is a Loose Blue Green Tourmaline?

The price for a loose blue green tourmaline starts at $1,500 and tops out at $77,080 with these rings, on average, selling for $4,518.

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.