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Certified Garnet Loose

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Stunning Red Loose Garnet Gemstone 2.20 Carats Malawi Garnet Loose Gemstone
Located in Bangkok, TH
Stunning Red Loose Garnet Gemstone, available for sale at wholesale price natural high quality
Category

21st Century and Contemporary Malawian Modern Loose Gemstones

Materials

Garnet

0.56 Ct Demantoid Garnet from Russia Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
Garnets - Demantoid. The stones from this region are famous for their vivid green hue, high dispersion
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

2.20 Carats Natural Malawi Loose Garnet Pink Garnet Garnet Necklace Garnet Ring
Located in Bangkok, TH
carats certified garnet gemstone from Malawi. Product Information: GEMSTONE TYPE: Natural Malawi Loose
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Garnet

.94 Carat Rare Green Demantoid Garnet, Loose Gemstone, GIA Certified ....A
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Demantoid garnets are among the rarest gemstones in the world. This vivid, bright green round
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet

5.03 Carat Tsavorite Garnet Oval, Unset Loose Gemstone, GIA Certified ....A
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautifully intense, bright green tsavorite garnet weighs 5.03 carats and measures 12.10 x
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet, Tsavorite

Certified Mandarin Garnet - 5.58ct
Located in Antwerpen, BE
A natural certified Spessartine Garnet also known as Mandarin Garnet. There are two well known
Category

2010s Unknown Modern Loose Gemstones

Materials

Garnet, Mandarin Garnet

Certified Mandarin Garnet - 5.58ct
Certified Mandarin Garnet - 5.58ct
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W 0.37 in D 0.25 in L 0.43 in
Certified 2.95 Carats Natural Loose Rhodolite Garnet Gem For Jewellery
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 2.95 Carat Dimension: 10 x 8.4 x 4.4 Mm Certificate: Available
Category

21st Century and Contemporary Central African Arts and Crafts Loose Gems...

Materials

Rhodolite

2.07 Carat Mandarin Garnet Lotus Certified
Located in Hua Hin, TH
2.07 Carat Mandarin Garnet Lotus Certified Shape: Oval Cutting Style: Faceted Brilliant Modified
Category

2010s Sri Lankan Loose Gemstones

Materials

Garnet, Mandarin Garnet

2.07 Carat Mandarin Garnet Lotus Certified
2.07 Carat Mandarin Garnet Lotus Certified
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W 0.32 in D 0.19 in L 0.27 in
2.29 Carat Hessonite Garnet Lotus Certified
Located in Hua Hin, TH
2.29 Carat Hessonite Garnet Lotus Certified Shape: Pear Cutting Style: Faceted Brilliant Modified
Category

2010s Sri Lankan Loose Gemstones

Materials

Garnet, Mandarin Garnet, Hessonite

2.29 Carat Hessonite Garnet Lotus Certified
2.29 Carat Hessonite Garnet Lotus Certified
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W 0.34 in D 0.22 in L 0.31 in
GIA Certified 12.57 Carat Demantoid Garnet
Located in New York, NY
This tremendous over 12.50 carat green-brown round cut garnet var. demantoid from Madagascar
Category

2010s Malagasy Loose Gemstones

Materials

Garnet

GIA Certified 12.57 Carat Demantoid Garnet
GIA Certified 12.57 Carat Demantoid Garnet
H 0.54 in W 0.54 in D 0.36 in
1.08ct Cushion Demantoid Garnet GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid Garnet The GIA report reads as follows: GIA Report
Category

2010s Namibian Loose Gemstones

Materials

Garnet

1.08ct Cushion Demantoid Garnet GIA Certified
1.08ct Cushion Demantoid Garnet GIA Certified
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W 0.28 in D 0.16 in L 0.21 in
GIA Certified 8.33 Carats Spessartine Garnet
Located in Los Angeles, CA
Behold the captivating allure of a Natural Spessartine Garnet, weighing an impressive 8.33 carats
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Garnet

GIA Certified 8.33 Carats Spessartine Garnet
GIA Certified 8.33 Carats Spessartine Garnet
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W 0.41 in D 0.29 in L 0.53 in
Certified Stone 3.01 Carats Incredible Royal Purple Pyrope Garnet Faceted Garnet
Located in Bangkok, TH
, flawless 3.01 carats certified pyrope garnet gemstone from Madagascar. Product Information: GEMSTONE TYPE
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Garnet

GIA Certified 1.94 Сarat Natural Russian Round Demantoid Garnet, Gem Garnet
Located in Los Angeles, CA
Step into the enchanting world of precious gemstones with our Natural Russian Demantoid Garnet
Category

21st Century and Contemporary Russian Loose Gemstones

Materials

Garnet

GIA Certified 3.05 Сarat Natural Namibian Demantoid Garnet, Garnet for Jewelry
Located in Los Angeles, CA
Explore the beauty of our Natural Namibian Demantoid Garnet. Weighing 3.05 carats and measuring
Category

21st Century and Contemporary Namibian Loose Gemstones

Materials

Garnet

GIA Certified 2.28 Carat Namibian Pear Demantoid Garnet, Natural Green Garnet
Located in Los Angeles, CA
Immerse yourself in the captivating charm of a 2.28 carats Natural Namibian Pear Demantoid Garnet
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Garnet

GIA Certified 2.45 Carats Color Change Garnet
Located in Los Angeles, CA
Unveil the elegance of a Natural Color Change Garnet, boasting 2.45 carats and certified by a GIA
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Garnet

GIA Certified 2.45 Carats Color Change Garnet
GIA Certified 2.45 Carats Color Change Garnet
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W 0.25 in D 0.23 in L 0.31 in
Certified Stone 1.40 Carats Soft Green Natural Tsavorite Garnet Faceted Garnet
Located in Bangkok, TH
Soft Green Natural Tsavorite Garnet of 1.40 carats from Kenya has a wonderful cut in a Oval shape
Category

21st Century and Contemporary Kenyan Modern Loose Gemstones

Materials

Garnet, Tsavorite

Lotus Certified 3.77-3.88 Carat Hessonite Garnet Pair
Located in Hua Hin, TH
7.65 carat Hessonite Garnet Pair
Category

2010s Loose Gemstones

Materials

Garnet, Hessonite

Lotus Certified 3.77-3.88 Carat Hessonite Garnet Pair
Lotus Certified 3.77-3.88 Carat Hessonite Garnet Pair
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W 0.39 in D 0.26 in L 0.38 in
Natural Horsetail 0.54 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
Garnets - Demantoid. The stones from this region are famous for their vivid green hue, high dispersion
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Natural Horsetail 1.4 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
The Demantoid Garnet is a rare gemstone full of brilliance. It's dispersion is higher than diamond
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Exceptional Brilliance 0.62 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
Garnets - Demantoid. The stones from this region are famous for their vivid green hue, high dispersion
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Rare Horsetail 0.85 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
The first known Demantoids were discovered in the Ural Mountain of Russia. The Demantoid Garnet
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

GIA Certified 5.41 Сarats Natural Cat's Eye Demantoid Garnet
Located in Los Angeles, CA
The flawless Cat's Eye Demantoid Garnet that has been cut to reveal a fine, sharp chatoyant band is
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Garnet

GIA Certified 5.41 Сarats Natural Cat's Eye Demantoid Garnet
GIA Certified 5.41 Сarats Natural Cat's Eye Demantoid Garnet
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W 0.36 in D 0.25 in L 0.34 in
2.11ct Vivid Fanta Orange Spessartine/Spessartite Garnet Oval, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA
Category

2010s Nigerian Loose Gemstones

Materials

Garnet

2.23ct Vivid Fanta Orange Spessartine/Spessartite Garnet Cushion, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA
Category

2010s Nigerian Loose Gemstones

Materials

Garnet

1.97 Ct Fanta Orange Spessartine / Spessartite Garnet Cushion, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA Report
Category

2010s Nigerian Loose Gemstones

Materials

Garnet

2.93ct Vivid Fanta Orange Spessartine/Spessartite Garnet Oval, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA Report
Category

2010s Nigerian Loose Gemstones

Materials

Garnet

Vivid Fanta Orange Spessartine/Spessartite Garnet 3.00ct Oval, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA Report
Category

2010s Nigerian Loose Gemstones

Materials

Garnet

GIA Certified 0.63 Carat Russian Demantoid Garnet with 'Horse Tail' Inclusions
Located in Los Angeles, CA
collection. Shiny and radiant is always in. Show off your style with this stunning GIA certified green garnet
Category

2010s Unknown Loose Gemstones

Materials

Garnet

Dazzling Malawi Garnet Gemstone 4.95 Carats Garnet Gemstone Garnet Cuttingstone
Located in Bangkok, TH
clarity, emerald cut, Rectangular shape 4.95 carats loose certified Garnet from malawi. Product
Category

21st Century and Contemporary Malawian Modern Loose Gemstones

Materials

Garnet

GIA Certified 0.71 Carats Russian Demantoid Garnet with 'horse tail' inclusions
Located in Los Angeles, CA
Identification: Natural Demantoid Garnet • Carat: 0.71 carats • Shape: Round • Measurement: 5.48
Category

21st Century and Contemporary Russian Loose Gemstones

Materials

Garnet

Natural Green Tsavorite Garnet 1.62 Carats Cut Garnet, Garnet Jewelry, Faceted
Located in Bangkok, TH
Carats Certified Garnet Gemstone From Kenya.💚 PRODUCT INFORMATION : Weight: 1.62 carats Dimensions
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Garnet, Tsavorite

Gorgeous Deep Red Malawi Garnet Stone 2.70 Carats Natural Garnet Garnet Necklace
Located in Bangkok, TH
Gorgeous Deep Red Malawi Garnet Stone, available for sale at wholesale price, loose gemstone
Category

21st Century and Contemporary Malawian Modern Loose Gemstones

Materials

Garnet

Demantoid Garnet 0.75 cts Demantoid Gem Madagascar Demantoid Garnet
Located in Chicago, IL
, CERTIFIED Demantoid Garnet, Excellent Cut. size 6.90 x 4.80 x 2.80 mm Very very nice colour demantoid
Category

21st Century and Contemporary Malagasy Art Deco Loose Gemstones

Materials

Garnet

Demantoid Garnet 0.75 cts Demantoid Gem Madagascar Demantoid Garnet
Demantoid Garnet 0.75 cts Demantoid Gem Madagascar Demantoid Garnet
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H 0.12 in W 0.19 in D 0.12 in L 0.28 in
Intense Green Tsavorite Garnet Gemstone 3.05 Carats Garnet for Rings
Located in Bangkok, TH
, flawless 3.05 carats certified tsavorite garnet gemstone from kenya. Product Information: GEMSTONE TYPE
Category

21st Century and Contemporary Kenyan Modern Loose Gemstones

Materials

Garnet, Tsavorite

Demantoid Garnet 1.18 cts pair wieght Demantoid Gem Madagascar Demantoid Garnet
Located in Chicago, IL
Demantoid Gem Madagascar Demantoid Garnet Green Demantoid Garnet, CERTIFIED Demantoid Garnet, Excellent Cut
Category

21st Century and Contemporary Malagasy Art Deco Loose Gemstones

Materials

Garnet

GIA Certified 2.44 Ct Tsavorite Garnet for Engagement Ring, January Birthstone
Located in Los Angeles, CA
Our 2. 44 carats certified tsavorite garnet gemstone is ideal for jewelry makers or collectors
Category

2010s Unknown Loose Gemstones

Materials

Tsavorite

GIA Certified 1.83 Ct Natural Round Tsavorite for Jewelry Making, Garnet Stone
Located in Los Angeles, CA
Discover the most beautiful and rare of gems, GIA certified natural tsavorite. This green beauty is
Category

2010s Unknown Loose Gemstones

Materials

Tsavorite

4.20 Carats Intense Red Malawi Garnet Gemstone from Malawi
Located in Bangkok, TH
quality, flawless 4.20 carats certified garnet gemstone from Malawi. Product Information: GEMSTONE TYPE
Category

21st Century and Contemporary Malawian Modern Loose Gemstones

Materials

Garnet

4.20 Carats Intense Red Malawi Garnet Gemstone from Malawi
4.20 Carats Intense Red Malawi Garnet Gemstone from Malawi
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W 0.33 in D 0.22 in L 0.42 in
1.91ct Oval Green Demantoid GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid The GIA report reads as follows: GIA Report Number
Category

2010s Unknown Loose Gemstones

Materials

Alexandrite

1.91ct Oval Green Demantoid GIA Certified Unheated
1.91ct Oval Green Demantoid GIA Certified Unheated
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W 0.36 in D 0.16 in L 0.28 in
1.44ct Round Vivid Green Demantoid GIA Certified Russia Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid The GIA report reads as follows: GIA Report Number
Category

2010s Russian Loose Gemstones

Materials

Alexandrite

Gorgeous Certified 1.77 Carat Natural Malaya Garnet Color Cushion Shape
Located in Peshawar, PK
Loose Malaya Garnet Weight : 1.77 Carats Dimensions : 6.65x6.59x4.79 Mm Origin : Madagascar Africa
Category

21st Century and Contemporary Malagasy Arts and Crafts Dome Rings

Materials

Garnet, Mandarin Garnet

1.67ct Vivid Fanta Orange Spessartine/Spessartite Garnet Pear, GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Spessartine Garnet The GIA report reads as follows: GIA Report
Category

2010s Nigerian More Jewelry

Materials

Garnet

4.23ct Cushion Vivid Fanta Orange Spessartine Garnet, Diamond Ring 14k YG
Located in Toronto, Ontario
exacting standards here in Canada. This is a stunning GIA Certified Spessartine Garnet The GIA report
Category

2010s Canadian Contemporary Cocktail Rings

Materials

Diamond, Garnet, 14k Gold, Yellow Gold

Raw Diamonds Demantoid Garnets 22 Karat 21K Gold Dangle Chandelier Earrings
By AB Jewelry NYC
Located in New York, NY
demantoid garnets and grey raw diamonds. Perfect for every day. Their neutral subtle color allows easy
Category

21st Century and Contemporary American Contemporary Dangle Earrings

Materials

Diamond, Garnet, 22k Gold, 18k Gold, Gold, Yellow Gold

1.64ct Demantoid Garnet, Diamond Statement or Engagement Ring in 14k White Gold
Located in Toronto, Ontario
. *** This is a stunning GIA Certified Demantoid Garnet The GIA report reads as follows: GIA Report Number
Category

2010s Canadian Contemporary Engagement Rings

Materials

Garnet, Diamond, White Gold

GIA Certified 6.97 Carat Garnet Loose Stone
By KAMAL
Located in Henrico, VA
Stunning eye clean, transparent RED WINE colored GARNET, ready for you to make a cocktail ring or a
Category

21st Century and Contemporary Art Deco Loose Gemstones

Materials

Garnet, Tourmaline

GIA Certified 6.97 Carat Garnet Loose Stone
GIA Certified 6.97 Carat Garnet Loose Stone
W 0.46 in D 0.28 in L 0.39 in
GIA Certified 10.92ct Oval Spessartine Garnet
Located in LA, CA
GIA Certified 10.92ct Spessartine Garnet Oval 13.30 x 11.88 x 8.11 mm GIA #6224661916 #MG159 A fine
Category

2010s Loose Gemstones

Materials

Garnet

GIA Certified 9.79ct Cushion Spessartine Garnet
Located in LA, CA
GIA Certified 9.79ct Spessartine Garnet Cushion 12.86 x 11.26 x 7.27 mm GIA #5221661930 #MG7 A
Category

2010s Loose Gemstones

Materials

Garnet

GIA Certified 15.87ct Octagonal Spessartine Garnet
Located in LA, CA
GIA Certified 15.87ct Spessartine Garnet Octagonal 16.95 x 11.25 x 7.22 mm GIA #6224661926 #MG9
Category

2010s Loose Gemstones

Materials

Garnet

GIA Certified 13.84 Carat Triangular Spessartine Garnet
Located in LA, CA
GIA Certified 13.84ct Spessartine Garnet Triangular 19.49 x 13.66 x 7.45 mm GIA #2223661948 #MG4
Category

2010s Loose Gemstones

Materials

Garnet

Gia Certified 7.40 Carat Marquise Spessartine Garnet
Located in LA, CA
GIA Certified 7.40ct Spessartine Garnet Marquise 17.91 x 8.77 x 6.10 mm GIA #1226661927 #MG5 When
Category

2010s Loose Gemstones

Materials

Garnet

GIA Certified 0.67 Carat Natural Russian Demantoid Garnet, Loose Green Garnet
Located in Los Angeles, CA
This 0.67 carat natural russian demantoid garnet with 'horse tail' inclusions comes with a
Category

2010s Unknown Loose Gemstones

Materials

Garnet

Mandarin Garnet Gem 13.54 Carat GIA Certified Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Ultra fine and exclusive, GIA certified, 13.54 carat Mandarin Garnet (Spessartine Garnet) oval gem
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Garnet, Mandarin Garnet

Mandarin Garnet Gem 13.54 Carat GIA Certified Loose Gemstone
Mandarin Garnet Gem 13.54 Carat GIA Certified Loose Gemstone
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W 11.41 in D 8.79 in L 15.13 in
Natural Loose Gem 0.56 Ct Demantoid Garnet from Russia ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
Garnets - Demantoid. The stones from this region are famous for their vivid green hue, high dispersion
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

IGI Certified 8.88ct Deep Red Orange Spessartine Garnet Heart Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Natural deep reddish orange Spessartine/spessartite garnet with a stunning deep colour. 8.88 carat
Category

21st Century and Contemporary Loose Gemstones

Materials

Garnet

1.4ct Oval Demantoid Garnet GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid Garnet The GIA report reads as follows: GIA Report
Category

2010s Namibian Loose Gemstones

Materials

Garnet

1.4ct Oval Demantoid Garnet GIA Certified
1.4ct Oval Demantoid Garnet GIA Certified
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W 0.32 in D 0.16 in L 0.24 in
1.39ct Oval Demantoid Garnet GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid Garnet The GIA report reads as follows: GIA Report
Category

2010s Namibian Loose Gemstones

Materials

Garnet

1.39ct Oval Demantoid Garnet GIA Certified
1.39ct Oval Demantoid Garnet GIA Certified
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W 0.32 in D 0.16 in L 0.24 in
1.9ct Round Demantoid Garnet GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid Garnet The GIA report reads as follows: GIA Report
Category

2010s Namibian Loose Gemstones

Materials

Garnet

1.9ct Round Demantoid Garnet GIA Certified
1.9ct Round Demantoid Garnet GIA Certified
Free Shipping
W 0.3 in D 0.2 in L 0.29 in
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Certified Garnet Loose For Sale on 1stDibs

On 1stDibs, you can find the most appropriate certified garnet loose for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from 18k Gold and Gold — can elevate any look. A certified garnet loose from Sarosi By Timeless Gems, Tsarina Jewels and Gems and Jewels UK — each of whom created a beautiful version of this treasured accessory — is worth considering. While most can agree that any certified garnet loose from our collection can easily elevate most outfits, but the choice of a Garnet version from the 9 available is guaranteed to add a special touch to your ensemble. See these pages for an oval cut iteration of this accessory, while there are also round cut cut and octagon cut cut versions available here, too. If you’re browsing our inventory for a certified garnet loose, 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 Certified Garnet Loose?

The price for a certified garnet loose starts at $283 and tops out at $130,800 with these rings, on average, selling for $3,695.

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.