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Loose Gemstones Untreated

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2.39Ct Natural Untreated Ruby Oval Loose Gemstone
By Hannaboya
Located in Sheridan, WY
Loose Gemstone. This exquisite gem, with its captivating pink hue and elegant oval cut, is a celebration
Category

2010s African Artisan Loose Gemstones

Materials

Ruby

Untreated Russian Emerald Loose Gemstone 0.37 Carat Weight ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring or Pendant. Shape
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Oval Ruby Loose unset 9mm oval untreated
Located in Jupiter, FL
Unset loose ruby certified, will come with a box. NATURAL GEMSTONE(S): RUBY Clarity/Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Ruby

6.47Ct NON-OILED Untreated Natural EMERALD Gemstone
By Hannaboya
Located in Sheridan, WY
Introducing the beauty of our Natural Untreated 6.47ct Natural Emerald Loose Gemstone. This
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

7.19ct NON-OILED Untreated Natural EMERALD Gemstone
By Hannaboya
Located in Sheridan, WY
Introducing the exquisite allure of our 7.19ct Non Oiled Untreated Natural Emerald Loose Gemstone
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

Matching pear ruby gemstone NATURAL UNTREATED RUBY
Located in Jupiter, FL
Rubies matching, natural untreated (heat only) NATURAL GEMSTONE(S): RUBY Clarity/Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Ruby

Excellent Loose Aquamarine 1.70 Carats Loose Gemstones for Ring Jewelry
Located in Bangkok, TH
Eye Clean Clarity Untreated Aquamarine from Nigeria. Product Information: GEMSTONE NAME: Excellent
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Aquamarine

GRS Certified 9.16 Carat Blue Sapphire Untreated Loose Gem
Located in Taipei, TW
A Burmese blue sapphire of 9 carats is a rare and valuable gemstone. Burmese sapphires are known
Category

21st Century and Contemporary Burmese Loose Gemstones

Materials

Blue Sapphire

1ct Round Teal Blue Natural Untreated Sapphire Gemstone
By Hannaboya
Located in Sheridan, WY
Discover the timeless beauty of this EYE CLEAN 1-carat Round Teal Blue Natural Untreated Sapphire
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

4.55ct Octagonal Cut No-Oil Untreated Emerald Gemstone
By Hannaboya
Located in Sheridan, WY
Untreated Emerald Gemstone. This extraordinary gemstone encapsulates the essence of authenticity, featuring
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

GRS Certified 12.68 Carat Blue Sapphire Untreated Loose Gem
Located in Taipei, TW
A Burmese blue sapphire of 12 carat size is a rare and stunning gemstone that has a deep and vivid
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

GRS Certified 12.68 Carat Blue Sapphire Untreated Loose Gem
GRS Certified 12.68 Carat Blue Sapphire Untreated Loose Gem
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W 0.47 in D 0.38 in L 0.52 in
Untreated Cushion Cut Blue Sapphire 0.63ct IGI Certified Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Untreated Cushion Cut Blue Sapphire 0.63ct IGI Certified Loose Gem 5.4x4.3mm Natural Untreated
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

GIA Certified 40.11 Carat Loose Untreated Natural Cushion Yellow Sapphire
Located in Carmel-by-the-Sea, CA
Rare unheated, untreated, large natural yellow sapphire. GIA Cert No.: 2223993369 dated July 14
Category

2010s Loose Gemstones

Materials

Yellow Sapphire

6.80 Carat Natural Loose Canary Yellow Tourmaline Untreated Ring Gem
Located in Peshawar, PK
Loose Tourmaline Weight: 6.80 Carats Dimension: 11.3x10.8x8.5 Mm Origin: Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

8.63ct Custom Cut Natural Untreated Rutiled Purple Amethyst Gemstone
By Hannaboya
Located in Sheridan, WY
Purple Custom Cut Amethyst Loose Gemstone, shaped like a distinctive triangle with a blunt tip. Its
Category

2010s African Contemporary Loose Gemstones

Materials

Amethyst

8.85ct Asscher Cut No-Oil Natural Untreated Emerald Gemstone
By Hannaboya
Located in Sheridan, WY
Introducing the Asscher Cut 8.85ct No-Oil 100% Natural Untreated Emerald Loose Gemstone: Pure
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

4.15 Carats Unheated Untreated Loose Aquamarine Ring Gem March Birthstone
Located in Peshawar, PK
captivating gemstone known for its stunning blue-green hues that resemble the clear waters of the ocean. This
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

GRA Certified 1.17ct Blue Sapphire Untreated Heart Cut Loose Rare Gem
Located in Birmingham, GB
GRA Certified 1.17ct Blue Sapphire Untreated Heart Cut Loose Rare Gem 7.1x6mm GRA Certified
Category

21st Century and Contemporary British Loose Gemstones

Materials

Blue Sapphire

Stunning Light Blue Loose Aquamarine Gemstone 2.75 Carats
Located in Bangkok, TH
Stunning Light Blue Loose Aquamarine Gemstone, available for sale at wholesale price natural high
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

NO RESERVE 3.28ct Radiant Cut NO-OIL Untreated EMERALD Gemstone
By Hannaboya
Located in Sheridan, WY
Emerald Loose Gemstone. This exquisite gem captures the essence of authenticity, showcasing a captivating
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

Natural Untreated Loose Aquamarine 11.30 Carat Emerald Shape Gem For Necklace
Located in Peshawar, PK
Loose Aquamarine Weight: 11.50 Carat Dimension: 19.4 x 11.4 x 7.3 Mm Colour : Pale Blue Origin
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

19.38ct Natural Deep Red Round Rubellite Loose Gemstone
By Hannaboya
Located in Sheridan, WY
19.38ct Deep Red Rubellite Loose stone, measuring approximately 17.2x16.4x12.4 Crafted by Mother
Category

2010s Nigerian Artisan Loose Gemstones

Materials

Rubelite, Tourmaline

19.38ct Natural Deep Red Round Rubellite Loose Gemstone
19.38ct Natural Deep Red Round Rubellite Loose Gemstone
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W 0.65 in D 0.49 in L 0.68 in
Heart-Shaped Russian Emerald Loose Gemstone 0.51 Carat
By Tsarina Jewels
Located in Bangkok, TH
a few unique characteristics which make it very special: it's untreated, which is very rare on the
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

11.82 Carat Natural Ruby Fancy Carving Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Red Ruby Fancy Carving Fancy Gemstone. 11.82 Carat with a elegant Red color and excellent
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

11.82 Carat Natural Ruby Fancy Carving Loose Gemstone
11.82 Carat Natural Ruby Fancy Carving Loose Gemstone
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H 0.1 in W 0.6 in L 0.99 in
8.22 Carat Natural Ruby Fancy Carving Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Red Ruby Handmade Carving Fancy Gemstone. 8.22 Carat with a elegant Red color and excellent
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

8.22 Carat Natural Ruby Fancy Carving Loose Gemstone
8.22 Carat Natural Ruby Fancy Carving Loose Gemstone
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H 0.12 in W 0.48 in L 0.83 in
42.11 Carat Beautiful Ruby Carving Pan Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Ruby Carving Pan Gemstone. 42.11 Carat with a elegant Red color and excellent clarity. Also
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

42.11 Carat Beautiful Ruby Carving Pan Loose Gemstone
42.11 Carat Beautiful Ruby Carving Pan Loose Gemstone
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H 0.21 in W 0.83 in L 1.52 in
Emerald Cut Emerald Loose Gemstone 1.03 Carat Weight
By Tsarina Jewels
Located in Bangkok, TH
exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring or Pendant. Shape
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

1.04ct Untreated Green Sapphire IGI Certified Unheated Oval Cut Rare Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.04ct Untreated Green Sapphire IGI Certified Unheated Oval Cut Rare Loose Gem Natural Vivid Green
Category

20th Century Loose Gemstones

Materials

Green Sapphire

Deep Blue Untreated Oval Cut Sapphire IGI Certified 0.61ct Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Deep Blue Untreated Oval Cut Sapphire IGI Certified 0.61ct Loose Rare Gem Natural Deep Blue
Category

20th Century Loose Gemstones

Materials

Blue Sapphire, Sapphire

Round Cut Natural Emerald Loose Gemstone 0.91 Carat
By Tsarina Jewels
Located in Bangkok, TH
exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring or Pendant. Shape
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

NO RESERVE 2.02ct Octagonal Cut NO-OIL Natural Untreated EMERALD Gemstone
By Hannaboya
Located in Sheridan, WY
Unveil Exquisite Beauty with the 2.02ct Octagonal Cut No-Oil 100% Natural Untreated Emerald Loose
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

One-of-the-kind Untreated Russian Emerald Loose Gem 0.85 Carat Certified
By Tsarina Jewels
Located in Bangkok, TH
unique piece of wearable art. This exceptional quality gemstone would make a custom-made jewelry design
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

NO RESERVE 4.56ct Octagonal Cut NO OIL Untreated Natural EMERALD Gemstone
By Hannaboya
Located in Sheridan, WY
Introducing our 4.56ct Octagonal Cut No Oil Untreated Natural Emerald Gemstone, a stunning
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

1.5ct Pear Cut UNTREATED TEAL BLUE NATURAL SAPPHIRE Gemstone NO RESERVE
By Hannaboya
Located in Sheridan, WY
Indulge in the captivating allure of this exquisite EYE CLEAN 1.5-carat Pear Cut Untreated Teal
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Deep Royal Blue Untreated Oval Cut Sapphire IGI Certified 0.63ct Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Deep Royal Blue Untreated Oval Cut Sapphire IGI Certified 0.63ct Loose Rare Gem Natural Deep Royal
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Untreated Natural Sapphire 1.16ct Fine Green Blue Teal Heart Cut Loose Gem VS
By Gems and Jewels UK
Located in Birmingham, GB
Untreated Natural Sapphire 1.16ct Fine Green Blue Teal Heart Cut Loose Gem VS Natural Untreated
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

17.85 Carats Natural Loose Purple Amethyst Fancy Cut Gemstone
Located in Peshawar, PK
Loose Amethyst Weight: 17.85 Carats Dimension: 16.3x14.2x13.1 Mm Origin: Brazil Shape: Emerald
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

17.85 Carats Natural Loose Purple Amethyst Fancy Cut Gemstone
17.85 Carats Natural Loose Purple Amethyst Fancy Cut Gemstone
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W 0.56 in D 0.52 in L 0.65 in
Natural Ruby 14.30 Carat Handmade Carving Fancy Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Red Ruby Handmade Carving Fancy Gemstone. 14.30 Carat with a elegant Red color and
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

32.10 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Ruby Carving Leaf Pair Gemstone. 32.10 Carat with a elegant Red color and excellent clarity
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

32.10 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
32.10 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
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H 0.13 in W 0.71 in L 1.34 in
25.14 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Ruby Carving Leaf Pair Gemstone. 25.14 Carat with a elegant Red color and excellent clarity
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

25.14 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
25.14 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
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H 0.11 in W 0.77 in L 0.87 in
44.22 Carat Ruby Faceted Pan Cabochon Pair Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Ruby Faceted Cabochon Pair Gemstone. 44.22 Carat with a elegant Red color and excellent
Category

21st Century and Contemporary Hong Kong Modern Loose Gemstones

Materials

Ruby

44.22 Carat Ruby Faceted Pan Cabochon Pair Loose Gemstone
44.22 Carat Ruby Faceted Pan Cabochon Pair Loose Gemstone
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H 0.69 in W 0.5 in L 1.03 in
Fine Blue Spinel 1.20 Carat Oval Cut Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
Fine Natural Blue Spinel Gemstone. Rare spinel with a fine vivid blue colour and excellent
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Emerald Cut Russian Emerald Loose Gemstone 1.1 Carat Weight
By Tsarina Jewels
Located in Bangkok, TH
exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring or Pendant. Shape
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Round Cut Russian Emerald Loose Gemstone 1.28 Carat Weight
By Tsarina Jewels
Located in Bangkok, TH
wearable art. This exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Unheated 13.12 Carat Ceylon Blue Sapphire, Loose Gemstone, Certified Cushion
By Emeralds Maravellous
Located in US
Remarks: Certificate states Untreated **This incredible gemstone is available to purchase as a loose
Category

21st Century and Contemporary Sri Lankan Contemporary Loose Gemstones

Materials

Blue Sapphire

0.53 Carat Natural Horsetail Inclusion Russian Demantoid Loose Gemstone
By Tsarina Jewels
Located in Bangkok, TH
- 0.53 ct Origin - Russia Treatment - Untreated Measurements(mm): 4.90 x 4.90 x 3.09 Cut: Brilliant
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Untreated Square Cut Neon Green Emerald Gemstone 0.62 Carat Weight ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
wearable art. This exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Emerald Cut Emerald Loose Gemstone 0.57 Carat Weight ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
wearable art. This exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Elegant 21.75 Carat Ruby Carving Leaf Shape Pair Loose Gemstone
By JEWEL HUB
Located in Hong Kong, HK
Natural Ruby Carving Leaf Pair Gemstone. 21.75 Carat with a elegant Red color and excellent clarity
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

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

Emerald Cut Russian Emerald Ring Loose Gemstone 2.13 Carat Weight
By Tsarina Jewels
Located in Bangkok, TH
exceptional quality gemstone would make a custom-made jewelry design. Perfect for a Ring or Pendant. Shape
Category

2010s Russian Modern Loose Gemstones

Materials

Emerald

Natural Horsetail 0.54 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
- 0.54 ct Origin - Russia Treatment - Untreated Measurements(mm): 5.10 x 5.10 x 3.06 Cut: Brilliant
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Mandarin Garnet Earrings Gemstone Pair 5.80 Carat Unset Oval Loose Gems
By Emeralds Maravellous
Located in US
Natural Untreated pair of Mandarin Garnet oval gemstones, weighing a total of 5.80 carats, offered
Category

21st Century and Contemporary Nigerien Modern Loose Gemstones

Materials

Garnet, Mandarin Garnet

Exceptional Brilliance 0.62 Ct Russian Demantoid Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
- 0.62 ct Origin - Russia Treatment - Untreated Measurements(mm): 5.20 x 5.20 x 3.25 Cut: Brilliant cut
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

0.56 Ct Demantoid Garnet from Russia Loose Gemstone ICL Certified
By Tsarina Jewels
Located in Bangkok, TH
- 0.56 ct Origin - Russia Treatment - Untreated Measurements(mm): 5.10 x 5.10 x 3.11 Cut: Brilliant
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
pendant. Shape - Round Total weight - 0.85 ct Origin - Russia Treatment - Untreated Measurements(mm
Category

2010s Russian Russian Empire Loose Gemstones

Materials

Garnet

Fine Violet Purple Spinel 1.47ct Oval Cut Rare Gemstone Loose Gem
Located in Birmingham, GB
Fine Violet Purple Spinel 1.47ct Oval Cut Rare Gemstone 7.3x6.4mm Loose Gem Fine Natural Purple
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.20ct Oval Cut Rare Gemstone Loose Rare Gem
Located in Birmingham, GB
Fine Blue Spinel 1.20ct Oval Cut Rare Gemstone 7 x 5.8mm Loose Rare Gem Fine Natural Blue Spinel
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.08ct Oval Cut Rare Gemstone Loose Rare Gem
Located in Birmingham, GB
Fine Blue Spinel 1.08ct Oval Cut Rare Gemstone 6.5 x 5.3mm Loose Rare Gem Fine Natural Blue Spinel
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Bluish Green Natural Tourmaline Loose Gemstone, 7.00 Carat Emerald Cut Afghani
Located in Peshawar, PK
indulge in the beauty of this premium loose gemstone. Gemstone Type: Tourmaline Weight: 7.00 Carat
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

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Loose Gemstones Untreated For Sale on 1stDibs

You are likely to find exactly the loose gemstones untreated you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using 18k gold, gold and rhodium. You can easily find a 17 antique edition and 59 modern creations to choose from as well. Finding the perfect loose gemstones untreated may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. Creating a loose gemstones untreated has been a part of the legacy of many jewelers, but those produced by Gems and Jewels UK, Tsarina Jewels and Merkaba are consistently popular. While most can agree that any loose gemstones untreated from our collection can easily elevate most outfits, but the choice of a diamond version from the 1 available is guaranteed to add a special touch to your ensemble. 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 round cut and cushion cut alternatives. There aren’t many items for women if you’re seeking a loose gemstones untreated, as most of the options available are for men and unisex.

How Much is a Loose Gemstones Untreated?

Prices for a loose gemstones untreated can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $81 and can go as high as $135,000, while this accessory, on average, fetches $352.

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.