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Spectacular Natural Loose Moonstone Gemstone 4.30 Carats Cabochon Cut
Located in Bangkok, TH
Spectacular Natural Loose Moonstone Gemstone, available for sale at wholesale price, natural high
Category

21st Century and Contemporary Indian Modern Loose Gemstones

Materials

Moonstone

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
Unheated Burma Sapphire Cabochon Ring Gem 15 Carat Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Rare and exceptional 15 carat unheated Burma Sapphire cabochon, offered loose to the world's most
Category

21st Century and Contemporary Burmese Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

Zambian Emerald Fancy Crown Carved Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 12.01 Carats Size: 15x22 MM Pieces: 1 Shape: Carved Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Rare Cat Eye Aquamarine Sugarloaf Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Fine needles inclusion in the stone oriented in a way to showcase a cats eye phenomenon when a direct overhead light is spotted. Weight: 22.84 Carats Size: 19x15 MM Pieces: 1
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Aquamarine

Gem Quality Amethyst Sugarloaf Cabochon Layout Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 586.90 Carats Size: 21x15x12 To 15x11x11 MM Pieces: 26 Drilled: No
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Amethyst

Zambian Emerald Carved Cabochon Antique Pendant Style Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 19.25 Carats Size: 19x16x9 MM Pieces: 1 Shape: Carved Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Zambian Emerald Carved Cabochon Antique Pendant Style Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 49.36 Carats Size: 26x20x13 MM Pieces: 1 Shape: Carved Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

14.72ct Star Sapphire Gemstone - Oval Cabochon Cut Loose Solitaire
Located in Greensboro, NC
Shape/Cut: Oval Cabochon Color: Blue Dimensions (mm): 14.15 x 11.91 Weight: 14.72ct Treatment
Category

21st Century and Contemporary Loose Gemstones

Materials

Star Sapphire

Gem Quality Amethyst Round Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 61.90 Carats Size: 8.5 To 22 MM Pieces: 2 Drilled: No
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Amethyst

Lustrous Zambian Emerald Fancy Marquise Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 4.50 Carats Size: 16x9x5 MM Pieces: 1 Shape: Smooth Marquise Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Zambian Emerald Hexagon Carved Fancy Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 12.49 Carats Size: 13x14 MM Pieces: 4 Shape: Carved Fancy Hexagon Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Zambian Emerald Hexagon Carved Fancy Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 77.20 Carats Size: 20x22 To 23x18 MM Pieces: 4 Shape: Carved Fancy Hexagon Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Top Quality Amethyst Smooth Round Cabochon Pointed Top Loose Gemstone
Located in Jaipur, RJ
Weight: 83.20 Carats Size: 13x17 To 14x19 MM Pieces: 3 Drilled: No
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Amethyst

Top Quality Amethyst Smooth Round Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 92.70 Carats Size: 10 To 19 MM Pieces: 3 Drilled: No
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Amethyst

10.20 Carat Natural Emerald Heart Cabochon Sugarloaf Unique Cut Loose Gemstone
Located in New York, NY
DETAILS Emerald Weight: 10.20 CT Measurements: 15.2 x 12.2 x 9 mm Shape: Heart Cabochon Color
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Emerald

23.65 Carat Natural Loose Emerald Gemstone. AAA Gem
Located in Miami, FL
. Vivid color and saturation. Perfect loose gemstone to set in rings, pendants and other pieces of fine
Category

21st Century and Contemporary European Loose Gemstones

Materials

Emerald

Opal Stone 51.39 Carat Natural Ethiopian loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Natural 51.39 carat free-form Ethiopian Opal loose gemstone, offered unmounted to an exclusive gem
Category

21st Century and Contemporary Ethiopian Contemporary Loose Gemstones

Materials

Opal

Fabulous Loose Sugarloaf Cabochon Tanzanite of 26.20 Ct
Located in Lucerne, CH
classic cabochon cut. The emergence of this cut to have a 4-sided pyramid shape and high-domed unfacetted
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Tanzanite

Loose Opal - Pear Cabochon 1.36ct Solitaire
Located in Greensboro, NC
Carat(s): 1.36ct Cut: Pear Cabochon Origin: Australia Size: (mm) 13.02 x 8.38 x 2.32 Condition
Category

21st Century and Contemporary Loose Gemstones

Materials

Opal

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
collection tanzanite 41.81ct royal blue cabochon 100% clean gemstone
Located in bangkok, TH
: 100% clean certificate: request Cut: cabochon
Category

2010s Loose Gemstones

Materials

Tanzanite

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

Cat’s Eye Alexandrite Chrysoberyl, 5.24 Carat Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
translucence and double cabochon cut add beautiful depth and dimension to the gem’s appearance. It is
Category

21st Century and Contemporary Unknown Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl, Cat’s Eye

24.09 Carats Top Quality Rubellite Tourmaline Cabochon Natural Gemstone
Located in Jaipur, RJ
This is a one of a kind of rubellite tourmaline. Gemstone - Rubellite Tourmaline Weight - 24.09 Ct
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

Lovely Natural Loose Moonstone Gem 6.60 Carats Indian Gemstone for Rings
Located in Bangkok, TH
Information: GEMSTONE NAME: Lovely Natural Loose Moonstone Gem WEIGHT: 6.60 carats DIMENSIONS: 12.0 x 8.1 x
Category

21st Century and Contemporary Indian Modern Loose Gemstones

Materials

Moonstone

Lustrous Vivid Green Zambian Emerald Carved Leaf Loose Gemstone for Jewelry
Located in Jaipur, RJ
Zambian Emerald Carved Leaf Cabochon Loose Gemstone for Jewelry Weight: 6.50 Carats Size: 18x11x6
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

47.32 Carats Colombian Emerald Carved Cabochon & Round Layout Natural Gemstone
Located in Jaipur, RJ
47.32 Carats Colombian Emerald Carved Cabochon & Round Layout Natural Gemstone Gemstone - Emerald
Category

21st Century and Contemporary Colombian Art Deco Loose Gemstones

Materials

Emerald

5.65 Carats Natural Loose Sugarloaf Cabochon Indicolite Tourmaline Gem For Ring
Located in Peshawar, PK
Indicolite Tourmaline Sugarloaf Cabochon Weight: 5.65 Carats Dimension: 9.4 x 8.4 x 8.3 Mm
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Indicolite

76.24 Carats Burmese Tourmaline cabochon plain for Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
76.24 Carats Burmese Tourmaline cabochon plain for Fine Jewelry Natural Gemstone Gemstone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

11.93 Carats Top Quality Rubellite Tourmaline Oval Cabochon Natural Gemstone
Located in Jaipur, RJ
This is a one of a kind of rubellite tourmaline with vivid color tone. Gemstone - Rubellite
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

11.10 Carat Burmese Spinel Cabochon Plain for Fine Jewellery Natural Gemstone
Located in Jaipur, RJ
11.10 Carat Burmese Spinel Cabochon Plain for Fine Jewellery Natural Gemstone Gemstone - Spinel
Category

21st Century and Contemporary Burmese Loose Gemstones

Materials

Spinel

69.20 Carat Burmese Spinel Cabochon Plain for Fine Jewellery Natural Gemstone
Located in Jaipur, RJ
69.20 Carat Burmese Spinel Cabochon Plain for Fine Jewellery Natural Gemstone Gemstone - Spinel
Category

21st Century and Contemporary Burmese Loose Gemstones

Materials

Spinel

Rare gemstone red beryl red emerald bixbite cabochon 0.27ct certified Guild
Located in bangkok, TH
RE03 Name: red beryl red emerald cabochon weight: 0.27ct origin: American color: red clarity
Category

2010s Loose Gemstones

Materials

Beryl, Emerald

Natural Aquamarine Carved Leaf Loose Gemstone Rare Size and Hand Carving
Located in Jaipur, RJ
Weight: 120.55 Carats Size: 50x22 MM Pieces: 2
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Aquamarine

23.14 Carats Colombian Top Emerald Carved Pear Cabochon Layout Natural Gemstone
Located in Jaipur, RJ
23.14 Carats Colombian Top Emerald Carved Pear Cabochon Layout Natural Gemstone Gemstone - Emerald
Category

21st Century and Contemporary Colombian Art Deco Loose Gemstones

Materials

Emerald

92.86 Carats Top Quality Rubellite Tourmaline Cabochon 4 Pieces Natural Gemstone
Located in Jaipur, RJ
Gemstone - Rubellite Tourmaline Weight - 92.86 Ct Size - 10x12.5 To 18x23 MM Piece - 4 Shape
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

Huge 33.70 Carats Natural Loose Purple Amethyst Necklace Gemstone
Located in Peshawar, PK
Loose Amethyst Weight: 33.70 Carats Dimension: 20x16.9x16.1 Mm Origin: Brazil Color: Purple
Category

21st Century and Contemporary Aesthetic Movement Loose Gemstones

Materials

Amethyst

Natural Aquamarine Carved Leaf Pair Loose Gemstone Rare Size and Hand Carving
Located in Jaipur, RJ
Weight: 200.70 Carats Size: 38x31 MM Pieces: 2
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Aquamarine

10.32ct Oval Cabochon Cut Loose Australian Opal. Valued at $10000.
Located in MELBOURNE, AU
Magnificent Loose Australian Jelly Opal of Cabochon Cut of oval shape of 10.32ct (26 x 14 x 4mm
Category

Vintage 1980s Australian Loose Gemstones

Materials

Opal

4.10 Carats Natural Loose Bright Green Tourmaline Ring Jewelry Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 4.10 Carats Dimension: 8.6x8.2x7 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.65 Carat Natural Loose Blue Sapphire Round Cut Ring Gemstone
Located in Peshawar, PK
Loose Blue Sapphire Weight: 1.65 Carats Dimension: 6.7x6.6x4.5 Mm Origin: Madagascar Africa
Category

21st Century and Contemporary Malagasy Aesthetic Movement Loose Gemstones

Materials

Blue Sapphire

1.65 Carat Natural Loose Blue Sapphire Round Cut Ring Gemstone
1.65 Carat Natural Loose Blue Sapphire Round Cut Ring Gemstone
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W 0.26 in D 0.18 in L 0.27 in
10.90 Carat Natural Emerald Pear Cabochon Sugarloaf May Birthstone Loose Gem
Located in New York, NY
DETAILS Emerald Weight: 10.90 CT Measurements: 18.9 x 15.3 mm Shape: Pear Cabochon Color: Green
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Emerald

3.75 Carat Natural Loose Smoky Orange Hessonite Garnet Cushion Shape Gemstone
Located in Peshawar, PK
Loose Hessonite Garnet Weight: 3.75 Carats Dimension: 10.5 x 6.5 x 6.2 Mm Colour: Smoky Orange Cut
Category

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

Materials

Hessonite, Garnet

5 Carats Natural Loose Lagoon Tourmaline SI Included Clarity Ring Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 5 Carats Dimension: 9.1x9.1x7 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Artisan Loose Gemstones

Materials

Tourmaline, Indicolite

6.10 Carats Natural Pink Bicolor Loose Tourmaline Emerald Shape Ring Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 6.10 Carats Dimension: 11.7x10.1x6.9 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Art Nouveau Loose Gemstones

Materials

Tourmaline

5.25 Carat Natural Loose Blue Seafoam Tourmaline Cushion Cut Ring Gemstone
Located in Peshawar, PK
tourmaline or paraiba tourmaline, is a mesmerizing gemstone that captivates with its delicate green hue
Category

Antique Late 19th Century Afghan Art Deco Loose Gemstones

Materials

Tourmaline, Indicolite

Set of 2 Loose Tourmalines - Rose Cut Cabochon 2.05ctw Green Matched Pair
Located in Greensboro, NC
Total Carats: 2.05ctw Cut: Rose Cut Cabochon Color: Green Stone 1 Size (mm): 8.83 x 6.42 x 1.82
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Rare 4.28ct IGI Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Loose Gem
By Gems and Jewels UK
Located in Birmingham, GB
Rare 4.28ct IGI Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Loose Gem IGI Certified
Category

20th Century Loose Gemstones

Materials

Jade

25.21 Carats Top Quality Rubellite Tourmaline Cabochon 3 Pieces Natural Gemstone
Located in Jaipur, RJ
Gemstone - Rubellite Tourmaline Weight - 25.21 Ct Size - 9.5 To 16x11 MM Piece - 3 Shape
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite, Tourmaline

Natural Sleeping Beauty Turquoise Cabochons Big Size Gemstone From Arizona TZ
Located in Jaipur, RJ
Name: Turquoise Gemstone Size: 48x38 MM Weight: 96.85 Carats Colour: Blue. Shape: Oval Cabochon
Category

21st Century and Contemporary Egyptian Art Deco Loose Gemstones

Materials

Turquoise

Natural Sleeping Beauty Turquoise Cabochons Big Size Gemstone from Arizona TZ
Located in Jaipur, RJ
Name: Turquoise Gemstone Size: 58x41 MM Weight: 192.50 Carats Colour: Blue. Shape: Oval Cabochon
Category

21st Century and Contemporary Egyptian Art Deco Loose Gemstones

Materials

Turquoise

Natural Burma Ruby - Burma Star Ruby -No Heat Burmese Ruby Cabochon Gemstone
Located in Jaipur, RJ
Natural Burma Ruby Star Ruby No Heat Cabochon Gemstone 65.03 Carats 58 Pieces (For Jewelry Making)
Category

21st Century and Contemporary Burmese Art Deco Loose Gemstones

Materials

Star Ruby, Ruby

Eostre Vivid Green Emerald Cabochon
Located in Melbourne, AU
A loose Zambia cabochon gem weight : 16.66 ct Vivid green colour Emerald’s lush green has
Category

2010s Australian Loose Gemstones

Materials

Emerald

Eostre Vivid Green Emerald Cabochon
Eostre Vivid Green Emerald Cabochon
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W 0.57 in D 0.34 in L 0.71 in
1.45 Carats Natural Loose Bicolor Tourmaline Emerald Shape
Located in Peshawar, PK
Loose Tourmaline Weight: 1.45 Carats Dimension: 8.8x5x3.7 Mm Origin: Istignala Shigar Pakistan
Category

21st Century and Contemporary Pakistani Russian Revival Loose Gemstones

Materials

Tourmaline, Multi-gemstone

1.45 Carats Natural Loose Bicolor Tourmaline Emerald Shape
1.45 Carats Natural Loose Bicolor Tourmaline Emerald Shape
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W 0.2 in D 0.15 in L 0.35 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
2.51ct Bullet Cabochon Blue Aquamarine from Brazil
Located in Toronto, Ontario
5.25x 5.34 mm Shape: Bullet Cabochon Cutting Style Crown: Cutting Style Pavilion: Transparency
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

2.51ct Bullet Cabochon Blue Aquamarine from Brazil
2.51ct Bullet Cabochon Blue Aquamarine from Brazil
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W 0.45 in D 0.22 in L 0.21 in
3.43ct Bullet Cabochon Blue Aquamarine from Brazil
Located in Toronto, Ontario
x 6.11 mm Shape: Bullet Cabochon Cutting Style Crown: Cutting Style Pavilion: Transparency
Category

2010s Unknown Loose Gemstones

Materials

Aquamarine

3.43ct Bullet Cabochon Blue Aquamarine from Brazil
3.43ct Bullet Cabochon Blue Aquamarine from Brazil
Free Shipping
W 0.48 in D 0.25 in L 0.25 in
Elegant 2.51 Carat Deep Purple Amethyst Cabochon
Located in Hua Hin, TH
An elegant Deep Purple Amethyst Cabochon. Fantastic internal pattern. Imbued with a superb color
Category

2010s Asian Loose Gemstones

Materials

Amethyst

Elegant 2.51 Carat Deep Purple Amethyst Cabochon
Elegant 2.51 Carat Deep Purple Amethyst Cabochon
Free Shipping
W 0.31 in D 0.17 in L 0.41 in
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Loose Cabochon Gemstone For Sale on 1stDibs

On 1stDibs, you can find the most appropriate loose cabochon gemstone for your needs in our varied inventory. Creating a loose cabochon gemstone has been a part of the legacy of many jewelers, but those produced by Sarosi By Timeless Gems, Merkaba and Tamir are consistently popular. A loose cabochon gemstone can make for a versatile accessory, but a selection from our variety of 4 Sapphire versions can add an especially stylish touch. Today, if you’re looking for a cabochon version of this piece and are unable to find the perfect match, our selection also includes cushion cut and oval cut alternatives. Finding a loose cabochon gemstone for sale for men should be easy, but there are 11 pieces available to browse for unisex as well as women, too.

How Much is a Loose Cabochon Gemstone?

The price for a loose cabochon gemstone starts at $160 and tops out at $39,960 with these rings, on average, selling for $12,908.

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.