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Bicolor Loose Gem

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Bicolor Tourmaline Ring Gem 29.22 Carat Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
One of a kind 29.22 carat Bicolor Tourmaline gem, offered loose to a wold-class gemstone collector
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Other

Bicolor Tourmaline Ring Gem 14.68 Carat Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Magnificent 14.68 carat square cushion-cut Fall Bicolor Tourmaline gem, offered unmounted to a very
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline, Other

Bicolor Tourmaline Ring Gem 17.68 Carat Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exceptional 17.68 carat, "loupe clean", Bicolor Tourmaline emerald-cut gem, offered loose to a fine
Category

21st Century and Contemporary Mozambican Modern Loose Gemstones

Materials

Tourmaline, Other

Gorgeous 8.60 Carats Loose Pink Black Bicolor Tourmaline Baguette Shape Gem
Located in Peshawar, PK
Loose Bicolor Tourmaline Weight: 8.60 Carats Dimension: 16.2x9.7x5.4 Mm Origin: Skardu Pakistan
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Tourmaline

4.80 Carats Natural Mint Green Bicolor Tourmaline Loose Ring Gem Emerald Cut
Located in Peshawar, PK
gem's diversity. Gemstone enthusiasts and jewelry designers appreciate bicolor tourmaline for its
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Multi-gemstone, Tourmaline

7.10 Carat Natural Bicolor Loose Ametrine Brazil Earth Mine Ring Gem Stone
Located in Peshawar, PK
Natural loose Ametrine Weight: 7.10 Carats Dimension: 12.2X10.8X8.2 Mm Origin: Brazil Shape
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine, Amethyst

Genuine 8.15 Carats Natural Loose Bicolor Loose Tourmaline Scissor Emerald Shape
Located in Peshawar, PK
and aristocracy. Gem cutters approach the shaping of loose tourmaline with precision to maximize its
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

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
Top Quality Clean Loose Bicolor Tourmaline 21.60 Carats Afghanistan Mine
Located in Peshawar, PK
Loose Bicolor Tourmaline Weight: 21.60 Carats Dimension: 24x13.9x8.9 Mm Origin: Paprook
Category

21st Century and Contemporary Afghan Art Nouveau Loose Gemstones

Materials

Other, Tourmaline, Multi-gemstone

5.70 Carats Natural Loose Pink Black Bicolor Tourmaline Baguette Shape
Located in Peshawar, PK
Loose Tourmaline Weight: 5.70 Carats Dimension: 15x7.6x4.9 Mm Origin: Stak Nala Skardu Pakistan
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Tourmaline

Bicolor Tourmaline Ring Earrings Loose Gemstone Set 12.09 Carats Cushion
By Tamir
Located in Beverly Hills, CA
Exclusive 12.09 carat Bicolor Tourmaline gem set, offered unmounted to an avid gemstone collector
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline

Rare Bicolor Natural Tourmaline Loose Gemstone, 5.80 Carat-Emerald/Octagon Cut
Located in Peshawar, PK
Introducing our stunning 5.80 Carat Bicolor Natural Tourmaline Loose Gemstone, sourced from Africa
Category

21st Century and Contemporary Congolese Contemporary Loose Gemstones

Materials

Tourmaline

2.30 Carat Loose Bicolor Tourmaline Cushion Oval Shape For Ring Jewelry
Located in Peshawar, PK
Faceted Bicolor Tourmaline Weight: 2.30 Carats Dimension: 7.9x6.9x6 Mm Origin: Africa Color
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline

Shield Shape Loose Ametrine Gem For Necklace 7.85 Carats
Located in Peshawar, PK
Loose Ametrine Weight: 7.85 Carats Dimension: 16 x 11.1 x 9.3 Mm Origin: Brazil Shape : Shield Cut
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Quartz

Shield Shape Loose Ametrine Gem For Necklace 7.85 Carats
Shield Shape Loose Ametrine Gem For Necklace 7.85 Carats
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W 0.44 in D 0.37 in L 0.63 in
28.75 Cts Natural Loose Blue Green Bicolor Tourmaline For Necklace Jewellery
Located in Peshawar, PK
: Bicolor Blue Green Treatment: Non Shape: Emerald Certificate: on customer demand . Bicolour tourmaline
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

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

Precisely Emerald Cut 3.01 Carat Bicolor Tourmaline for Earrings Gandara Gems
Located in Bangkok, TH
This beautiful pair of Precisely Emerald cut 3.01 Carat bicolor Tourmaline pair was acquired as
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Bicolor Tourmaline Pair 16.30 carats Cushion cut Natural Nigerian Tourmaline Gem
Located in Bangkok, TH
Clean Shape Cushion Cut Fancy Cushion Experience the captivating beauty of our Bicolor Tourmaline
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline

Opulent Bicolor Rare Tourmaline 11.25 carats Emerald Cut Natural Afghani Gem
Located in Bangkok, TH
Included Shape Octagon Cut Emerald Discover the captivating allure of a genuine 11.25-carat Bicolor Rare
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

8.15 Carat Natural Loose Ametrine Emerald Shape Gem For Jewellery
Located in Peshawar, PK
Loose Ametrine Weight: 8.15 Carats Dimension: 12.1 x 10.1 x 7.6 Mm Origin: Brazil Shape : Emerald
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
Located in Peshawar, PK
: 6.95 x 5.77 x 4.17 0.75 Ct: 7.26 x 4.34 x 2.93 Color: Pink Bicolor Clarity: Slightly Include Treatment
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
Pink Bicolor Rare Natural Tourmaline Loose Gemstones Lot, 3.70 Ct Emerald Cut Af
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H 0.28 in W 0.18 in D 0.12 in Dm 0.26 in L 0.29 in
11.30 Carat Natural Loose Bicolor Yellow Citrine Emerald Cut For Pendant Jewelry
Located in Peshawar, PK
to captivate gem enthusiasts and jewelry lovers around the world.
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

5.35 Carat Natural Loose Ametrine Octagon Shape Gem For Jewellery Making
Located in Peshawar, PK
Loose Ametrine Weight: 5.35 Carats Dimension: 14.1 x 8.6 x 6.3 Mm Origin: Brazil Shape : Octagon
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

7.10 Carats Natural Loose Ametrine Emerald Shape Gem From Earth Mine
Located in Peshawar, PK
Loose Ametrine Weight: 7.10 Carats Dimension: 11.9 x 9.7 x 7.1 Mm Origin: Brazil Shape : Emerald
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Quartz

12.80 Carat Natural Loose Ametrine Octagon Shape Gem For Jewellery Making
Located in Peshawar, PK
Loose Ametrine Weight: 12.80 Carats Dimension: 14.4 x 13.9 x 10.4 Mm Origin: Bolivia Shape
Category

21st Century and Contemporary Bolivian Arts and Crafts Loose Gemstones

Materials

Quartz

7.45 Carat Natural Loose Ametrine Oval Shape Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Ametrine Weight: 7.45 Carats Dimension: 14.6 x 10.6 x 7.3 Mm Origin: Brazil Shape : Long Oval
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

6.80 Carats Natural Loose Polygon Cut Ametrine Gem For Jewellery Making
Located in Peshawar, PK
Loose Ametrine Weight: 6.80 Carats Dimension: 15 x 11.5 x 8.6 Mm Origin: Brazil Shape : Oval
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Quartz

12.60 Carats Natural Loose Round Shape Ametrine Gem For Jewellery Making
Located in Peshawar, PK
Loose Ametrine Weight: 12.60 Carats Dimension: 15 x 15 x 11 Mm Colour: Purple and Yellow Origin
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Quartz

18.90 Carats Natural Loose Ametrine Cushion Shape Bolivianite Gem For Jewellery
Located in Peshawar, PK
golden shades. The gem's distinct color zoning often manifests in a bicolor or tricolor pattern
Category

21st Century and Contemporary Bolivian Arts and Crafts Loose Gemstones

Materials

Quartz

Stunning 6.10 Carats Natural Loose Tourmaline Light Green Color Ring Gem
Located in Peshawar, PK
Loose Tourmaline Weight: 6.10 Carats Dimension: 13.1x8.2x6.4 Mm Origin: Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.85 Carats Natural Loose Greenish Blue Tourmaline Ring Gem Afghanistan Mine
Located in Peshawar, PK
Loose Tourmaline Weight: 1.85 Carats Dimension: 7.9x5.6x5.1 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

2.60 Carats Natural Loose Bi Colour Tourmaline Gem For Ring Emerald Shape
Located in Peshawar, PK
Loose Bi Colour Tourmaline Weight: 2.60 Carats Dimension: 9.5 x 7 x 4.5 Mm Colour: Black And Pink
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Tourmaline

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

Antique 15th Century and Earlier Pakistani Art Nouveau Loose Gemstones

Materials

Tourmaline, Chrome Tourmaline

2.25 Carats Stunning Pear Shape Loose Tourmaline Ring Gem From Congo Mine
Located in Peshawar, PK
of tourmalines. From stunning green gems to a spectrum of other colors and intriguing bicolor
Category

21st Century and Contemporary Congolese Arts and Crafts Loose Gemstones

Materials

Tourmaline

10.30 Carats Natural Bolivian Loose Ametrine Bi Color Gem For Jewellery Making
Located in Peshawar, PK
bicolor or zoning pattern, where one part of the gem displays amethyst's violet tones, while the other
Category

21st Century and Contemporary Bolivian Arts and Crafts Loose Gemstones

Materials

Citrine, Amethyst

4.85 Carats Natural Loose Green Tourmaline With Lagoon Shade Cushion Ring Gem
Located in Peshawar, PK
Loose Tourmaline Weight: 4.85 Carats Dimension: 9.7x8.2x7 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Elegant 38.65 Carat Natural Loose Bi Color Tourmaline Emerald Cut Necklace Gem
Located in Peshawar, PK
Bicolor Tourmaline Weight: 38.65 Carats Dimension: 20x15.6x13.5 Mm Origin: Africa Color: Green
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline

Watermelon Bicolor Green & Pink Natural Tourmaline (Elbaite) Gemstones, 2.60 Ct
Located in Peshawar, PK
exquisite 2.60 Carat rare Watermelon Bicolor Tourmaline (elbaite) Loose Gemstones sourced directly from the
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Watermelon Bicolor Green & Pink Natural Tourmaline (Elbaite) Gemstones, 2.60 Ct
Watermelon Bicolor Green & Pink Natural Tourmaline (Elbaite) Gemstones, 2.60 Ct
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H 0.25 in W 0.17 in D 0.13 in Dm 0.17 in L 0.32 in
Natural Bicolor Tourmaline Stone 3.80 Carats Tourmaline Stone for Jewellery
Located in Bangkok, TH
Natural Bicolor Tourmaline Stone of 3.80 carats from Afghanistan has a wonderful cut in a Octagon
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Rare Watermelon Bicolor Tourmaline Gemstone 3.05Ct Cushion Cut for Ring/Jewelry
Located in Peshawar, PK
CERTIFICATE: On demand Introducing a breathtaking 3.05 Carat Watermelon Bicolor Natural Tourmaline Loose
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Huge 112 Carats Natural Bicolor Tourmaline Flower Drill Carving Gemstone
Located in Peshawar, PK
tourmaline specimen, considering its color, clarity, and suitability for carving. The chosen gem is then
Category

2010s Malagasy Art Deco Loose Gemstones

Materials

Tourmaline

2.70 Cts Long Emerald Cut Faceted Bicolor Tourmaline Green Yellow Gemstone
Located in Peshawar, PK
Bicolor Tourmaline Weight: 2.70 Carats Dimension: 13.9x6x3.9 Mm Origin: Madagascar Africa Color
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.75 Carats Natural Loose Bicolour Tourmaline Emerald Shape
Located in Peshawar, PK
crystals. Jewelers and gem enthusiasts admire bicolor tourmaline for its unique appearance and vibrant
Category

21st Century and Contemporary Afghan Art Nouveau Loose Gemstones

Materials

Tourmaline

6.75 Carats Natural Loose Bicolour Tourmaline Emerald Shape
6.75 Carats Natural Loose Bicolour Tourmaline Emerald Shape
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W 0.32 in D 0.25 in L 0.59 in
Green & Black Bicolor Natural Tourmaline Gemstone, 7.35 Ct Emerald Cut-Pendant
Located in Peshawar, PK
7.08 x 5.88 COLOR: Green & Black Bicolor CLARITY: Eye Clean TREATMENT: None ORIGIN: Afghanistan
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

1.8ct Princess Cut Natural Bicolor Yellow Blue Parti Sapphire Gemstone - CLEAN
By Hannaboya
Located in Sheridan, WY
Parti Sapphire, a mesmerizing gem that effortlessly blends hues of yellow, blue, and green in a
Category

2010s African Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire, Yellow Sapphire, Green Sapphire

Rare Bicolor Black & Blue Tourmaline Gemstone Pair, 3.70 Ct Emerald Cut-Earrings
Located in Peshawar, PK
Blue Bicolor Natural Tourmaline Loose Gemstone well-matched pairs, sourced directly from the Kunar
Category

21st Century and Contemporary Afghan Loose Gemstones

Materials

Tourmaline

0.80 Carats Bicolor Parti Sapphire Stone Oval Cut Natural Madagascar's Gemstone
Located in Bangkok, TH
natural marvel hailing from the gem-rich landscapes of Madagascar. This exquisite gem showcases a
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Sapphire

7.13 Carats Bicolor Stak Nala Tourmaline Pair Emerald Cut Pakistani Gemstone
Located in Bangkok, TH
remarkable weight of 7.13 carats. Mined from the renowned Stak Nala region in Pakistan, this gem showcases a
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Tourmaline

Rare Pink & Green Watermelon Bicolor Tourmaline Gemstone 5.90 Ct Emerald Cut Afg
Located in Peshawar, PK
5.25 COLOR: Bicolor CLARITY: Slightly Included TREATMENT: None ORIGIN: Afghanistan CERTIFICATE: On
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Rare Neon Bluish Green Bicolor Two Tone Natural Tourmaline Gemstone, 12.65 Carat
Located in Peshawar, PK
Bicolor Clarity: 98% Eye Clean Treatment: Untreated Origin: Afghanistan Certificate: On demand This
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Rare Neon Bluish Green Bicolor Tourmaline Gemstone, 2.5 Ct Modified Emerald Cut
Located in Peshawar, PK
): 10.16 x 6.01 x 4.87 COLOR: Bicolor CLARITY: Approx 98% Eye Clean TREATMENT: Not Treated ORIGIN
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Rare Green & Neon Blue Bicolor Tourmaline Gemstone, 5.05 Ct Emerald Cut for Ring
Located in Peshawar, PK
7.68 x 5.19 COLOR: Bicolor CLARITY: SI TREATMENT: None ORIGIN: Afghanistan CERTIFICATE: On demand
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

2.15 Carats Natural Loose Bicolour Tourmaline Emerald Shape Ring Gemstone
Located in Peshawar, PK
choices, as they showcase the gem's beautiful color transition. Jewelry designers appreciate bicolor
Category

21st Century and Contemporary Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

Rare Neon Bluish Green Bicolor Tourmaline Gemstone, 3.95 Ct Step Emerald Cut Afg
Located in Peshawar, PK
x 7.06 x 5.14 COLOR: Bicolor CLARITY: Slightly Included TREATMENT: Not Treated ORIGIN: Afghanistan
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

9.65 Carats Natural Loose Pink Bicolour Tourmaline Emerald Shape Ring Jewellery
Located in Peshawar, PK
each region producing gems that exhibit distinct color combinations and qualities. Bicolor
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Multi-gemstone, Tourmaline

3.80 Carats Natural Baby Pink Bicolour Loose Tourmaline For Jewelry Making
Located in Peshawar, PK
advantage of its bicolor properties, strategically placing the gem to highlight the transition between the
Category

2010s Afghan Artist Loose Gemstones

Materials

Tourmaline

Huge 24.40 Carats Bi Color Loose Tourmaline Emerald Shape For Necklace Jewellery
Located in Peshawar, PK
lithium, along with the gem's growth process, contribute to the striking bicolor effect. Bicolor
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.79 Carats Bi Color Loose Tourmaline Pair Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Afghanistan, each gem boasts a mesmerizing blend of hues, displaying a harmonious fusion of distinct colors
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

8.80 Carats Natural Loose Ametrine Oval Shape Bar Cut Gemstone Brazil Mine
Located in Peshawar, PK
Loose Ametrine Weight: 8.80 Carats Dimension: 14.5x11.6x10.2 Mm Origin: Brazil Shape: Oval Cut
Category

21st Century and Contemporary Brazilian Art Nouveau Loose Gemstones

Materials

Amethyst, Citrine

Perfect Square Shape Ametrine 13.65 Carat Flower Cut Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Ametrine Weight: 13.65 Carats Dimension: 13.9 x 13.9 x 11.1 Mm Origin: Brazil Shape : Square
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

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Bicolor Loose Gem For Sale on 1stDibs

Surely you’ll find the exact bicolor loose gem you’re seeking on 1stDibs — we’ve got a vast assortment for sale. There have been many well-made iterations of the classic bicolor loose gem over the years, but those made by Merkaba and Tamir are often thought to be among the most beautiful. Today, if you’re looking for an emerald cut version of this piece and are unable to find the perfect match, our selection also includes cushion cut alternatives. Finding a bicolor loose gem for sale for women should be easy, but there are 15 pieces available to browse for unisex as well as men, too.

How Much is a Bicolor Loose Gem?

Prices for a bicolor loose gem can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $250 and can go as high as $22,500, while this accessory, on average, fetches $1,300.

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.