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Loose Gemstones

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Loose Gemstones For Sale
No Reserve Beautiful Sphene 4.60 ct Madagascar SI
Located in Bangkok, TH
Introducing a dazzling 4.60 ct Sphene gemstone from Madagascar, boasting a mesmerizing greenish-yellow hue. With SI clarity, it showcases vibrant sparks of yellow, green, and orange,...
Category

2010s Malagasy Loose Gemstones

Materials

Other

10.56 Carats Bright Red Garnet Stone Cushion Cut Natural Madagascar's Gemstone
Located in Bangkok, TH
Weight 10.56 carats Dimensions 13.3x11.8x7.47 mm Treatment none Origin Madagascar Clarity VVS Shape cushion Cut fancy cushion The captivating allure of this exquisite gemsto...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Garnet

1.50 Carats Gray Burmese Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
Weight 1.50 carats Dimensions 7.4x6.4x4.5 mm Treatment none Origin Burma Clarity VVS Shape cushion Cut fancy cushion The 1.50 carats Gray Burmese Spinel Stone is a captivati...
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

14.75 Carat Natural Loose Citrine Cushion Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Citrine Weight: 14.75 Carats Dimension: 16.4 x 16 x 10 Mm Origin: Brazil Colour: Yellow Treatment: Non Certficate: On Demand Shape: Cushion Citrine, a radiant and versatile ...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

1.80 Carats Pinkish Red Loose Garnet Stone Oval Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.80 carats Dimensions 8.3x7.3x4.3 mm Treatment none Origin Tanzania Clarity VVS Shape oval Cut custom precision The Pinkish Red Garnet Stone is a radiant gem of exqu...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Garnet

2.45 Carat Natural Loose African Tourmaline Cushion Shape Gem For Jewellery
Located in Peshawar, PK
Loose Tourmaline Weight: 2.45 Carats Dimension: 8 x 7 x 5.9 Mm Colour: Yellow Origin: Africa Certificate: On Demand Treatment: Non Tourmaline is a captivating gemstone known for i...
Category

21st Century and Contemporary Central African Arts and Crafts Loose Gemstones

Materials

Tourmaline

10.60 Carat Natural Loose Amethyst Emerald Shape Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Amethyst Weight: 10.60 Carats Dimension: 16.4 x 11.7 x 7.8 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Emerald Amethyst, a stunning variety ...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

Lovely Green Emerald for Ring 1.50 Ct Afghan Emerald Gemstone for Jewelry
Located in Bangkok, TH
Lovely Green Emerald For Ring, Available For Sale At wholesale Price Natural High Quality, 1.50 Carats Natural Emerald From Afghanistan. Product Information: GEMSTONE TYPE: Lovely G...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

2.96 Carats Paraiba Tourmaline Oval Cut Natural Mozambique Stone AIGS Certified
Located in Bangkok, TH
Weight 2.96 carats Dimensions 11.49x6.83x4.38 mm Treatment none Origin Mozambique Clarity VVS Shape Oval Cut Oval Behold the mesmerizing beauty of this 2.96 carats Paraiba Tou...
Category

21st Century and Contemporary Mozambican Modern Loose Gemstones

Materials

Tourmaline, Paraiba

0.51 Carat Fancy Light Pink Oval Cut Diamond SI2 Clarity GIA Certified
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Oval ➛ Colour Grade: Fancy Light Pink ➛ Carat: 0.51 ➛ Clarity: SI2 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ Our...
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 3.01 Carat Y-Z (Yellow) Natural Diamond
Located in Dubai, UAE
We are natural diamond production company located in Dubai. Weight: 3.01ct Shape: Cushion Color: rare Y-Z (Yellow) Clarity: VVS2 Polish: Excellent Symm: Very Good Dimensions (mm): 8....
Category

21st Century and Contemporary Emirian Modern Loose Gemstones

Materials

Diamond, Yellow Diamond

GIA Certified 7.02 Carat Fancy Dark Brown-Yellow Natural Diamond
Located in Dubai, UAE
We are natural diamond production company located in Dubai. Weight: 7.02ct Shape: Cushion Color: Brown-Yellow Intensity: Fancy Clarity: I1 Polish: Excellent Symm: Good
Category

21st Century and Contemporary Emirian Modern Loose Gemstones

Materials

Diamond, Yellow Diamond, Brown Diamond

Superb vintage hand carved “Peony Floral Spray” natural color Momo coral plaque
Located in New York, NY
A superb, vintage, hand carved “Peony Floral Spray” natural color Momo coral plaque. The one of a kind oval plaque is intricately carved and fantastically detailed and the color is e...
Category

20th Century Unknown Contemporary Loose Gemstones

Materials

Coral, Sterling Silver

GLA Certificate Tourmaline Afghanistan green-mint 8.45 ct Investment Gemstone
Located in Viena, Viena
Estimated value approx. 3500.- euros the most beautiful among the beautiful, a green tourmaline from Afghanistan with mint tone, always special due to the particularly high light re...
Category

2010s Modern Loose Gemstones

Materials

Tourmaline

Set of 2 Loose Tourmalines - Emerald Cut 1.57ctw Blue Green Matched Pair
Located in Greensboro, NC
Treatment: No Treatment Total Carats: 1.57ctw Cut: Emerald Color: Blue Green Origin: Nigeria Size: 6.2mm x 4.9mm Condition: New
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Beautiful Open Color Spinel Oval
Located in Bangkok, TH
Introducing our stunning Open Oval Blue Spinel from Tanzania! With its captivating hue and exquisite cut, this gem is the epitome of elegance. Perfect for adorning a ring, its beauty...
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

5.10 Carat Natural Loose Apple Green Peridot Cushion Shape Gem For Earth Mine
Located in Peshawar, PK
Loose Peridot Weight: 5.10 Carats Dimension: 11.3 x 8.8 x 6.4 Mm Colour: Green Origin: Supat Valley, Pakistan Shape: Emerald Certificate: On Demand Treatment: Non Peridot, a vibran...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Peridot

4.25 Carats Fine Sea Blue Loose Aquamarine Stone Trilliant Cut Nigerian Gemstone
Located in Bangkok, TH
Weight 4.25 carats Dimensions 11.1x10.8x7.5 mm Treatment none Origin Nigeria Clarity SI Shape triangular Cut Trilliant The 4.25 carats Fine Sea Blue Aquamarine Stone boasts ...
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Aquamarine

NO RESERVE 1ct Round TEAL BLUE UNHEATED SAPPHIRE
Located in Sheridan, WY
Discover the timeless beauty of this 1-carat Round Teal Blue Natural Untreated Sapphire Gemstone. Its classic round cut radiates with a symphony of light, enhancing the stone’s deep ...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Gorgeous 3.05 Carats Natural Loose Green Emerald Swat Pakistan Mine Ring Gem
Located in Peshawar, PK
Loose Emerald Weight: 3.05 Carats Dimensions: 10.5x6.2x5.9 Mm Origin: Swat Pakistan Shape: Emerald Color: Green Treatment: Non Certificate: On Demand The Swat Emerald...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Emerald

Loose 1.83ct Pear Cut GIA Cert Natural Diamond SI1/J i15047
Located in Toledo, OH
Sparkling loose diamond. SI1 clarity with J color. GIA number 6237154289. 10.7mm by 6.6mm by 4.2mm
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

NO RESERVE 1ct Oval NATURAL TEAL BLUE UNHEATED SAPPHIRE Gemstone
Located in Sheridan, WY
Step into a world of serene beauty with this 1.3-carat Oval Natural Teal Blue Sapphire Gemstone. Boasting an eye-clean clarity, this gemstone is a paragon of purity, with no visible ...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Rare Blue Natural Tourmaline Gemstone, 6.25 Ct Cushion Cut for Ring/Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 6.25 Carats SHAPE: Cushion Cut SIZE (MM): 10.20 x 9.50 x 8.53 COLOR: Vibrant Blue CLARITY: Moderately Included TREATMENT: None ORIGIN: A...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

1.5ct Pear Cut UNTREATED TEAL BLUE NATURAL SAPPHIRE Gemstone NO RESERVE
Located in Sheridan, WY
Indulge in the captivating allure of this exquisite 1.5-carat Pear Cut Untreated Teal Blue Natural Sapphire Gemstone. Meticulously crafted to showcase its unique teardrop shape, thi...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

5.45ct NON-OILED Emerald Cut Natural EMERALD Gemstone
Located in Sheridan, WY
Indulge in the luxurious allure of our exquisite 5.25ct Non-oiled Emerald Cut Emerald Gemstone. This premium quality gemstone boasts a vibrant green hue that captures the essence of ...
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

Luminous 1.41ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Luminous 1.41ct Ideal Cut Pair of Diamonds - GIA Certified Experience elegance with this exquisite pair of pear-shaped diamonds, totaling 1.41-carat. These diamonds are nearly color...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

NO RESERVE 1.3ct Oval NATURAL Teal BLUE SAPPHIRE Gemstone
Located in Sheridan, WY
Step into a world of serene beauty with this 1.3-carat Oval Natural Teal Blue Sapphire Gemstone. Boasting an eye-clean clarity, this gemstone is a paragon of purity, with no visible...
Category

2010s African Artisan Loose Gemstones

Materials

Blue Sapphire, Sapphire

Brilliant 1.42ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Brilliant 1.42ct Ideal Cut Pair of Diamonds - GIA Certified Introducing a pair of brilliant square diamonds, totaling 1.42-carat, ideal for bespoke jewelry creations. Certified by ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Majestic 1.82ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Majestic 1.82ct Ideal Cut Pair of Diamonds - GIA Certified Introducing a stunning pair of emerald-cut diamonds, totaling 1.82-carat, perfect for creating exquisite jewelry pieces. C...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Incredible 2.93ct Round Blue Zircon
Located in Pittsburgh, PA
Stunning transparent 2.93ct round blue zircon. Its significant size and electric beauty will captivate the gaze of those who appreciate fine gems. The gemstone measures 8.02-8.04 x 5...
Category

21st Century and Contemporary Cambodian Loose Gemstones

Materials

Zircon, Blue Zircon

Captivating 2.57 Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Captivating 2.57 Ideal Cut Pair of Diamonds - GIA Certified Experience luxury with this stunning pair of cushion-cut diamonds, offering a combined total carat weight of 2.57-carat....
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Sparkling 2.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Sparkling 2.02ct Ideal Cut Pair of Diamonds - GIA Certified Discover an exquisite pair of round diamonds, totaling 2.02-carat, ideal for custom jewelry designs. Certified by GIA, en...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Gorgeous 14.70 Carats Natural Loose Sky Blue Topaz Perfect Cushion Cut
Located in Peshawar, PK
Loose Blue Topaz Weight: 14.70 Carats Dimensions: 13.4x12.7x9.9 Mm Origin: Brazil Shape: Cushion Color: Blue Treatment: Non Certificate: On Demand Benefits Of Wearing Blue Topaz St...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Topaz, Blue Topaz

Shining 1.45ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Shining 1.45ct Ideal Cut Pair of Diamonds - GIA Certified Discover a radiant pair of cushion-cut diamonds, totaling 1.45-carat, perfect for custom jewelry pieces. Certified by GIA, ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Stunning Natural Emerald Stone 1.50 Carats Emerald Gemstone for Making Jewelry
Located in Bangkok, TH
Stunning Natural Emerald Stone, Available for sale at wholesale price natural high quality 1.50 carats SI Clarity from Loose Emerald Punjsher, Afghanistan. Product Information: GEM...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

14.70 Carats Rubellite Tourmaline Octagon Cut Stone For Fine Jewelry Natural gem
Located in Jaipur, RJ
14.70 Carats Rubellite Tourmaline Octagon Cut Stone For Fine Jewelry Natural gem Gemstone - Rubellite Tourmaline Weight - 14.70 carats Size - 16.6x13.7x7 MM Quantity - 1 Piece
Category

21st Century and Contemporary Unknown Contemporary Loose Gemstones

Materials

Rubelite, Tourmaline, 18k Gold

Sparkling 3.78 Carat Blue Zircon Gemstone Pear 8x7mm
Located in Columbus, OH
A gorgeous pear shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know! ...
Category

21st Century and Contemporary American Loose Gemstones

Materials

Zircon, Blue Zircon

7.52 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem
Located in Jaipur, RJ
7.52 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem Gemstone - Tourmaline Weight- 7.52 Carats Shape - Octagon Size - 12x9.5x7.5 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

3.65ct NON-OILED Rectangular Natural EMERALD Gemstone
Located in Sheridan, WY
Discover the pure elegance of our 3.65ct Non-oiled Rectangle Cut Natural Emerald Gemstone. This exceptional gemstone radiates a deep, lush green, reminiscent of the richest foliage. ...
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

Dazzling 1.81ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Dazzling 1.81ct Ideal Cut Pair of Diamonds - GIA Certified Experience the beauty of this delightful pair of oval diamonds, totaling 1.81-carat. These diamonds offer a near-colorles...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1ct Round Teal Blue Natural Untreated Sapphire Gemstone
Located in Sheridan, WY
Discover the timeless beauty of this 1-carat Round Teal Blue Natural Untreated Sapphire Gemstone. Its classic round cut radiates with a symphony of light, enhancing the stone’s deep ...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

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 - Tourmaline Weight - 76.24 Ct Size - 29x20 mm Shape - cabochon
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

Rare Neon Blue Natural Tourmaline Gemstone, 4 Ct Emerald Cut for Ring/Jewelry AF
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 4.00 Carats SHAPE: Emerald Cut SIZE (MM): 13.82 x 6.72 x 5.07 COLOR: Neon Electric Blue CLARITY: Slightly Included TREATMENT: None ORIGI...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

1.15 Carats Loose Green Tourmaline Stone Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 1.15 carats Dimensions 6.1x5.7x4.4 mm Treatment none Origin Afghanistan Clarity eye clean Shape octagon Cut emerald The exquisite Green Tourmaline stone, boasting a w...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

2.0ct Round Teal NATURAL Unheated SAPPHIRE Gemstone
Located in Sheridan, WY
Embrace the allure of the ocean with our 2.0ct Round Teal Natural Unheated Sapphire Gemstone. This stunning gemstone boasts a unique teal hue that evokes the mystery and charm of the...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

Pristine 4.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Pristine 4.02ct Ideal Cut Pair of Diamonds - GIA Certified Discover elegance with this captivating pair of emerald-cut diamonds, weighing 4.02-carat. Comes with GIA certifications,...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Luxurious 4.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Luxurious 4.02ct Ideal Cut Pair of Diamonds - GIA Certified Indulge in luxury with this stunning pair of square-cut diamonds, totaling 4.02-carat. Certified by GI, these diamonds re...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Radiant 3.01ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Radiant 3.01ct Ideal Cut Pair of Diamonds - GIA Certified Elevate your jewelry collection with this stunning pair of round diamonds, boasting a combined weight of 3.01-carat. Certif...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Exquisite 3.03ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Exquisite 3.03ct Ideal Cut Pair of Diamonds - GIA Certified Experience the allure of elegance with this exquisite pair of emerald-cut diamonds, offering a combined weight of 3.03-c...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

11.47 carats nigeria green tourmaline Top Quality baguette Cut stone natural Gem
Located in Jaipur, RJ
11.47 carats Nigeria green tourmaline Top Quality baguette Cut stone natural Gem Gemstone - Tourmaline Weight- 11.47 Carats Shape - baguette Size - 20x10x6 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

13.4 Carat Tanzania Zircon Natural Oval & Cushion Cutstone Fine Jewelry Gemstone
Located in Jaipur, RJ
13.4 Carat Tanzania Zircon Natural Oval & Cushion Cut stone Fine Jewelry Gemstone Weight - 13.40 Carats Size - 8x8 To 8x10 mm Shape - Oval & Cushion Quantity - 4 Pieces
Category

2010s Tanzanian Loose Gemstones

Materials

Zircon

9.52 carats Nigeria green tourmaline Top Quality cushion Cut stone natural Gem
Located in Jaipur, RJ
9.52 carats Nigeria green tourmaline Top Quality cushion Cut stone natural Gem Gemstone - Tourmaline Weight- 9.52 Carats Shape - cushion Size - 15x11x7 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

Fascinating Swiss Blue Topaz Stone 17.85 Carats Aaa Sparkling Topaz for Jewelry
Located in Bangkok, TH
Fascinating Swiss Blue Topaz Stone, available For Sale At Wholesale Price Natural High Quality 17.85 Carats Loupe Clean Clarity Heated Topaz From Madagascar...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Topaz, Blue Topaz

5.70 Carat Natural Loose Aquamarine Square Shape Gem For Ring Jewellery
Located in Peshawar, PK
Loose Aquamarine Weight: 5.70 Carat Dimension: 10.1 x 10 x 8.2 Mm Colour : Pale Blue Origin: Shigar Valley, Pakistan Treatment: Non Certificate : On Demand Shape: Square Aquamarine...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

4.40 Carat Natural Loose Rhodolite Garnet Cushion Shape Gem From Africa
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 2.20 Carats Dimension: 10.1 x 8.2 x 5.6 Mm Colour: Red Origin: Africa Treatment: Non Shape : Cushion Rhodolite garnet, a gemstone celebrated for its e...
Category

21st Century and Contemporary Central African Arts and Crafts Loose Gemstones

Materials

Garnet, Rhodolite

69.74 Carats Burmese Tourmaline Oval Cut Stone for Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
69.74 Carats Burmese Tourmaline Oval Cut Stone for Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 69.74 Ct Size - 28x22x17 mm Shape - Oval Cut Stone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

Rare Reddish Orange Natural Hessonite Garnet Gemstone, 8.55 Ct Cushion Cut-Ring
Located in Peshawar, PK
GEMSTONE TYPE: Hessonite Garnet/Grossular Garnet/Cinnamon stone PIECE(S): 1 WEIGHT: 8.55 Carats SHAPE: Cushion Cut SIZE (MM): 12.85 x 11.02 x 7.18 COLOR: Reddish Orange CLARITY: Slig...
Category

21st Century and Contemporary Brazilian Contemporary Loose Gemstones

Materials

Garnet, Hessonite

1.55 Carat Faceted Yellowish Blue Sapphire Oval Shape Gem From Madagascar Mine
Located in Peshawar, PK
Loose Sapphire Weight: 1.55 Carats Dimension: 6.7 x 5.6 x 4.5 Mm Colour: Yellow And Blue Origin: Madagascar, Africa Treatment: Heated Certificate: On Demand Shape: Oval Sapphire...
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Sapphire

Loose Gemstones for Sale on 1stDibs

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.

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