Skip to main content

Loose Cabochon Gemstone

to
48
50
24
483
314
11
3
2
2
1
1
1
7
6
6
5
3
Sort By
44.22 Carat Ruby Faceted Pan Cabochon Pair Loose Gemstone
44.22 Carat Ruby Faceted Pan Cabochon Pair Loose Gemstone

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

8.30 Carat Natural Loose Madeira Citrine Cabochon Pair Gemstone
8.30 Carat Natural Loose Madeira Citrine Cabochon Pair Gemstone

8.30 Carat Natural Loose Madeira Citrine Cabochon Pair Gemstone

Located in Peshawar, PK

Loose Madeira Citrine Pair Weight: 8.30 Carats Dimension: 9.9 x 9.9 x 6.9 Mm And

Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

37.42 Carat Emerald Gigantic Piece Special Shape Cabochon Loose Gemstone
37.42 Carat Emerald Gigantic Piece Special Shape Cabochon Loose Gemstone

37.42 Carat Emerald Gigantic Piece Special Shape Cabochon Loose Gemstone

By Malpani Jewels

Located in Hung Hom, HK

. This loose gemstone is a testament to nature’s grandeur and the artistry of gem cutting, perfect for

Category

2010s Hong Kong Arts and Crafts Loose Gemstones

Materials

Emerald

Natural Blue Aquamarine 14.50 Ct Sugarloaf Cabochon Loose Gemstone for Jewelry
Natural Blue Aquamarine 14.50 Ct Sugarloaf Cabochon Loose Gemstone for Jewelry

Natural Blue Aquamarine 14.50 Ct Sugarloaf Cabochon Loose Gemstone for Jewelry

Located in Peshawar, PK

Blue Natural Aquamarine Sugarloaf Cabochon Loose Gemstone for Ring, Pendant or any other Jewelry

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Aquamarine

Natural Neon Blue Green Tourmaline 6.82 Carat Sugarloaf Cabochon Loose Gemstone
Natural Neon Blue Green Tourmaline 6.82 Carat Sugarloaf Cabochon Loose Gemstone

Natural Neon Blue Green Tourmaline 6.82 Carat Sugarloaf Cabochon Loose Gemstone

Located in Peshawar, PK

Neon Blue Green Natural Tourmaline Loose Gemstone for Ring, Necklace Pendant, Bracelet or any other

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone 35.60 Ct
Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone 35.60 Ct

Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone 35.60 Ct

Located in Peshawar, PK

Vivid Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone from Kunar

Category

21st Century and Contemporary Afghan Modernist Loose Gemstones

Materials

Tourmaline

Natural Pale Green Beryl Ring Pendant Loose Gemstone Sugarloaf Cabochon 23.05Ct
Natural Pale Green Beryl Ring Pendant Loose Gemstone Sugarloaf Cabochon 23.05Ct

Natural Pale Green Beryl Ring Pendant Loose Gemstone Sugarloaf Cabochon 23.05Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Sugarloaf Cabochon with cat’s eye effect perfect for Ring

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Vivid Blue Aquamarine 12.67 Ct Cabochon Loose Gemstone for Ring Jewelry
Natural Vivid Blue Aquamarine 12.67 Ct Cabochon Loose Gemstone for Ring Jewelry

Natural Vivid Blue Aquamarine 12.67 Ct Cabochon Loose Gemstone for Ring Jewelry

Located in Peshawar, PK

Vivid Blue Natural Aquamarine Cabochon Loose Gemstone for Ring, Pendant or any other Jewelry

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Aquamarine

Natural Darkish Blue Sapphire 13.5 Ct Cabochon Loose Gemstone Parcel for Jewelry
Natural Darkish Blue Sapphire 13.5 Ct Cabochon Loose Gemstone Parcel for Jewelry

Natural Darkish Blue Sapphire 13.5 Ct Cabochon Loose Gemstone Parcel for Jewelry

Located in Peshawar, PK

Darkish Blue Natural Sapphire Cabochon Cut Loose Gemstones Jewelry Size Parcel – Deep Blue Color

Category

21st Century and Contemporary Sri Lankan Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

Natural Darkish Blue Sapphire 11.5 Ct Cabochon Loose Gemstone Parcel for Jewelry
Natural Darkish Blue Sapphire 11.5 Ct Cabochon Loose Gemstone Parcel for Jewelry

Natural Darkish Blue Sapphire 11.5 Ct Cabochon Loose Gemstone Parcel for Jewelry

Located in Peshawar, PK

Darkish Blue Natural Sapphire Cabochon Cut Loose Gemstones Jewelry Size Parcel – Deep Blue Color

Category

21st Century and Contemporary Sri Lankan Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire

Black Rutile Quartz Loose Gemstone Cabochons 33.85 Ct for Rings, Pendant Jewel
Black Rutile Quartz Loose Gemstone Cabochons 33.85 Ct for Rings, Pendant Jewel

Black Rutile Quartz Loose Gemstone Cabochons 33.85 Ct for Rings, Pendant Jewel

Located in Peshawar, PK

Black Rutilated Quartz Loose Gemstone Cabochons for Ring, Earrings, Necklace Pendant or any other

Category

21st Century and Contemporary Pakistani Modernist Loose Gemstones

Materials

Quartz

Pinkish Red Natural Ruby Ring, Bracelet Loose Gemstone 6.30Ct Cabochon Cut Jewel
Pinkish Red Natural Ruby Ring, Bracelet Loose Gemstone 6.30Ct Cabochon Cut Jewel

Pinkish Red Natural Ruby Ring, Bracelet Loose Gemstone 6.30Ct Cabochon Cut Jewel

Located in Peshawar, PK

Pinkish Red Natural Ruby Loose Gemstone for Ring, Necklace Pendant, Bracelet or any other Jewelry

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Ruby

14.72ct Star Sapphire Gemstone - Oval Cabochon Cut Loose Solitaire
14.72ct Star Sapphire Gemstone - Oval Cabochon Cut Loose Solitaire

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

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 9 Carat
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 9 Carat

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 9 Carat

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 12.15 Ct
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 12.15 Ct

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 12.15 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 13.10 Ct
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 13.10 Ct

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 13.10 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 32.30 Ct
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 32.30 Ct

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 32.30 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 16.10 Ct
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 16.10 Ct

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 16.10 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 28.45 Ct
Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 28.45 Ct

Natural Pale Green Beryl Ring Necklace Pendant Loose Gemstone Cabochon 28.45 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstone Cabochon with cat’s eye effect perfect for Ring, Pendant

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Pale Green Beryl Earrings, Pendant Loose Gemstone Cabochon Set 60.75 Ct
Natural Pale Green Beryl Earrings, Pendant Loose Gemstone Cabochon Set 60.75 Ct

Natural Pale Green Beryl Earrings, Pendant Loose Gemstone Cabochon Set 60.75 Ct

Located in Peshawar, PK

Pale Green Natural Beryl Loose Gemstones Pair Set Cabochon Cut with cat’s eye effect perfect for

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Beryl, Green Beryl

Natural Blue Opal 13.20 Carat Pear Cabochon Loose Gemstone with Play of Color
Natural Blue Opal 13.20 Carat Pear Cabochon Loose Gemstone with Play of Color

Natural Blue Opal 13.20 Carat Pear Cabochon Loose Gemstone with Play of Color

Located in Peshawar, PK

Rare Blue Natural Opal Cabochon Loose Gemstone Pear Shape for Necklace Pendant or any other Jewelry

Category

21st Century and Contemporary Ethiopian Contemporary Loose Gemstones

Materials

Opal

Gem Quality Amethyst Round Cabochon Loose Gemstone for Jewelry
Gem Quality Amethyst Round Cabochon Loose Gemstone for Jewelry

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

Pinkish Hue Red Natural Ruby Ring Loose Gemstone 5.90 Ct Cabochon for Jewelry
Pinkish Hue Red Natural Ruby Ring Loose Gemstone 5.90 Ct Cabochon for Jewelry

Pinkish Hue Red Natural Ruby Ring Loose Gemstone 5.90 Ct Cabochon for Jewelry

Located in Peshawar, PK

Pinkish Hue Red Natural Ruby Cabochon Loose Gemstone for Ring, Necklace Pendant, Bracelet or any

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Ruby

3.38 Carats Lagoon Loose Tourmaline Stone Cabochon Cut Tanzanian Gemstone
3.38 Carats Lagoon Loose Tourmaline Stone Cabochon Cut Tanzanian Gemstone

3.38 Carats Lagoon Loose Tourmaline Stone Cabochon Cut Tanzanian Gemstone

Located in Bangkok, TH

mesmerizing gem from the heart of Tanzania. This exquisite cabochon-cut gemstone showcases a stunning play of

Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

29.30 Carat Natural Loose Cabochon Light Blue Aquamarine For Pendant Gemstone
29.30 Carat Natural Loose Cabochon Light Blue Aquamarine For Pendant Gemstone

29.30 Carat Natural Loose Cabochon Light Blue Aquamarine For Pendant Gemstone

Located in Bangkok, TH

Cut Oval This 29.30 Carat Natural Loose Light Blue Aquamarine is a striking gemstone, beautifully

Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

Zambian Emerald Hexagon Carved Fancy Cabochon Loose Gemstone for Jewelry
Zambian Emerald Hexagon Carved Fancy Cabochon Loose Gemstone for Jewelry

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

10Pcs Natural Multi Tourmaline Mix Size Oval Cabochon Loose Gemstone Jewelry
10Pcs Natural Multi Tourmaline Mix Size Oval Cabochon Loose Gemstone Jewelry

10Pcs Natural Multi Tourmaline Mix Size Oval Cabochon Loose Gemstone Jewelry

Located in New York, NY

About this listing: 10Pcs Natural Multi Tourmaline Mix Size Oval Cabochon Loose Gemstone Lot. Multi

Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Tourmaline

Bespoke Loose Australian Oval Cabochon Cut Opal 17.71ct
Bespoke Loose Australian Oval Cabochon Cut Opal 17.71ct

Bespoke Loose Australian Oval Cabochon Cut Opal 17.71ct

Located in SYDNEY, NSW

A Loose Australian Oval Cabochon Cut Opal, VI1 Clarity, Gray Colour, weighing 17.71ct. Metal: N/A

Category

21st Century and Contemporary Loose Gemstones

Materials

Opal, White Gold

Loose Opal - Pear Cabochon 1.36ct Solitaire
Loose Opal - Pear Cabochon 1.36ct Solitaire

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
11.82 Carat Natural Ruby Fancy Carving Loose Gemstone

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

8.22 Carat Natural Ruby Fancy Carving Loose Gemstone
8.22 Carat Natural Ruby Fancy Carving Loose Gemstone

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

10.40 Carat Natural Loose Amethyst Sugarloaf Cabochon For Ring
10.40 Carat Natural Loose Amethyst Sugarloaf Cabochon For Ring

10.40 Carat Natural Loose Amethyst Sugarloaf Cabochon For Ring

Located in Peshawar, PK

: Sugarloaf Cabochon Color: Purple Treatment: Non Certificate: On Customer Demand Amethyst, a stunning

Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

5.75 Carat Natural Loose Dual Madeira Citrine Pairs Sugarloaf Cabochon
5.75 Carat Natural Loose Dual Madeira Citrine Pairs Sugarloaf Cabochon

5.75 Carat Natural Loose Dual Madeira Citrine Pairs Sugarloaf Cabochon

Located in Peshawar, PK

Loose Madeira Citrine Sugarloaf Cabochon Weight: 5.75 Carats Dimension: 8.8 x 8.8 x 6.2 Mm

Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

Natural Ruby  14.30 Carat Handmade Carving Fancy Loose Gemstone
Natural Ruby  14.30 Carat Handmade Carving Fancy Loose Gemstone

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

Natural Blue Aquamarine 51.06 Ct Sugarloaf Cabochon Gemstone Parcel Afghanistan
Natural Blue Aquamarine 51.06 Ct Sugarloaf Cabochon Gemstone Parcel Afghanistan

Natural Blue Aquamarine 51.06 Ct Sugarloaf Cabochon Gemstone Parcel Afghanistan

Located in Peshawar, PK

Natural Blue Aquamarine 51.06 Ct Sugarloaf Cabochon Parcel from Afghanistan 💎 GEMSTONE TYPE

Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Aquamarine

14.00 Carat Natural Loose Opal Cabochon From Ethiopia
14.00 Carat Natural Loose Opal Cabochon From Ethiopia

14.00 Carat Natural Loose Opal Cabochon From Ethiopia

Located in Peshawar, PK

Loose Opal Cabochon Weight: 14.00 Carats Dimension: 17.5 x 15.6 x 11 Mm Origin: Ethiopia

Category

21st Century and Contemporary Ethiopian Arts and Crafts Loose Gemstones

Materials

Opal

7.40 Carat Loose Dual Sugarloaf Madeira Citrine Cabochon Round Shape Gem
7.40 Carat Loose Dual Sugarloaf Madeira Citrine Cabochon Round Shape Gem

7.40 Carat Loose Dual Sugarloaf Madeira Citrine Cabochon Round Shape Gem

Located in Peshawar, PK

Loose Dual Sugarloaf Madeira Citrine Cabochon Weight: 7.40 Carats Dimension: 10 x 10 x 7.7 Mm And

Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

Pear-Shaped Citrine Cabochon Gemstones Cts 118.42
Pear-Shaped Citrine Cabochon Gemstones Cts 118.42

Pear-Shaped Citrine Cabochon Gemstones Cts 118.42

Located in Hong Kong, HK

This set features six citrine cabochon pear-shaped gemstones, totaling 118.42 carats. Mined from

Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Citrine

5.65 Carats Natural Loose Sugarloaf Cabochon Indicolite Tourmaline Gem For Ring
5.65 Carats Natural Loose Sugarloaf Cabochon Indicolite Tourmaline Gem For Ring

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

3.35 Carat Natural Loose Star Sapphire Stone Round Cut Sri Lankan Gemstone
3.35 Carat Natural Loose Star Sapphire Stone Round Cut Sri Lankan Gemstone

3.35 Carat Natural Loose Star Sapphire Stone Round Cut Sri Lankan Gemstone

Located in Bangkok, TH

Round This 3.35 Carat Natural Loose Star Sapphire is a striking gemstone featuring a well-defined

Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Star Sapphire

  • 1
Get Updated with New Arrivals
Save "Loose Cabochon Gemstone", and we’ll notify you when there are new listings in this category.

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.