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Loose Gemstones For Sale
3.10 Carat Natural Loose Bright Green Tourmaline Emerald Shape
Located in Peshawar, PK
Loose Mint Green Tourmaline Weight: 3.10 Carats Dimension: 9.3 x 6.8 x 5.2 Mm Colour: Mint Green Origin: Afghanistan Certificate: On Demand Treatment: Non Tourmaline is a captivat...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.35 Carat Natural Loose Citrine Scissor Cut Gemstone For Jewellery
Located in Peshawar, PK
Loose Citrine Weight: 3.35 Carats Dimension: 10.4 x 7.6 x 6.2 Mm Origin: Brazil Colour: Yellow Treatment: Non Certficate: On Demand Shape: Emerald Citrine, a radiant and versatile ...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

63.70 Carat Huge Natural Loose Seafoam Blue Aquamarine Gemstone March Birthstone
Located in Peshawar, PK
Loose Aquamarine Weight: 63.70 Carat Dimension: 26 x 20 x 18 Mm Colour : Pale Blue Origin: Madagascar, Africa Treatment: Non Certificate : On Demand Shape: Oval Aquamarine is a capt...
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Aquamarine

Natural Purple Amethyst Gemstone, 22.05 Ct Emerald Cut-Necklace Pendant-Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Amethyst PIECE(S): 1 WEIGHT: 22.05 Carats SHAPE: Step Emerald Cut SIZE (MM): 19.60 x 13.57 x 11.62 COLOR: Light Purple CLARITY: Eye Clean TREATMENT: None ORIGIN: Afri...
Category

21st Century and Contemporary Congolese Contemporary Loose Gemstones

Materials

Amethyst

Exquisite 1.01ct Ideal Cut Natural Diamond - GIA Certified
Located in רמת גן, IL
Exquisite 1.01ct Ideal Cut Natural Diamond - GIA Certified Introducing the exceptional beauty of this 1.01-carat diamond, crafted with precision into a sophisticated cut-cornered re...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Precious 3.00ct Ideal Cut Round Diamond - GIA Certified
Located in רמת גן, IL
Precious 3.00ct Ideal Cut round Diamond - GIA Certified Introducing a masterpiece of light and clarity, this 3.00-carat round diamond is a treasure of exceptional purity and brillia...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.05 Carats Rich Pink Garnet Stone Oval Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.05 carats Dimensions 8.7x7.7x4.3 mm Treatment none Origin Madagascar Clarity loupe clean Shape oval Cut fancy oval The Rich Pink Garnet Stone is a radiant gem of e...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Garnet

Sparkling 2.20ct Ideal Cut Oval-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Sparkling 2.20ct Ideal Cut Oval-Shaped Diamond - GIA Certified This exquisite 2.20-carat oval diamond is a masterpiece of natural beauty and refined elegance. Certified by the GIA, ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

4 Carat Natural Loose Amethyst Pixel Cut Gem For Jewellery Making
Located in Peshawar, PK
Loose Amethyst Weight: 4.00 Carats Dimension: 14.7 x 7.2 x 5.5 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Emerald Amethyst, a stunning variety of...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

1.30 carats Green Tsavorite Garnet Stone Oval Cut Natural Gemstone from Kenya
Located in Bangkok, TH
Weight 1.30 carats Dimensions 6.86x5.35x4.30 mm Treatment none Origin Kenya Clarity SI Shape oval Cut Oval Garnet is one of the most diverse gemstones in terms of colors, ran...
Category

21st Century and Contemporary Kenyan Modern Loose Gemstones

Materials

Garnet, Tsavorite

2.85 Carat Natural Loose African Tourmaline Cushion Shape Gem For Jewellery
Located in Peshawar, PK
Loose Tourmaline Weight: 2.85 Carats Dimension: 9 x 7.5 x 5.6 Mm Colour: Greenish Yellow Origin: Africa Certificate: On Demand Treatment: Non Tourmaline is a captivating gemstone ...
Category

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

Materials

Tourmaline

12.25 Carat loose Blue Topaz Asscher Cut Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Blue Topaz Weight: 12.25 Carats Dimensions: 13 x 12 x 8.9 Mm Origin: Brazil Shape: Asscher Color: Blue Certificate: On Demand Benefits Of Wearing Blue Topaz Stone: It helps t...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Blue Topaz

3.35 Carat Natural Loose Dravite Tourmaline Cushion Shape Gem From Africa
Located in Peshawar, PK
Loose Dravite Tourmaline Weight: 3.35 Carats Dimension: 10.5 x 7.6 x 5.1 Mm Colour: Brown And Orange Origin: Africa Certificate: On Demand Treatment: Non Tourmaline is a captivatin...
Category

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

Materials

Tourmaline

3.80 Carat Natural Loose Aquamarine Trillion Shape Gem For Ring Jewellery
Located in Peshawar, PK
Loose Aquamarine Weight: 3.80 Carat Dimension: 10.3 x 10.3 x 6.5 Mm Colour : Pale Blue Origin: Shigar Valley, Pakistan Treatment: Non Certificate : On Demand Shape: Trillion Aquama...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

Majestic 5.56ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Majestic 5.56ct Ideal Cut Emerald-Cut Diamond - GIA Certified This exceptional diamond boasts a substantial 5.56-carat weight, showcasing its brilliance in a classic emerald cut. T...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Stunning 3.02ct Ideal Cut Oval-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Stunning 3.02ct Ideal Cut Oval-Shaped Diamond - GIA Certified Discover the pinnacle of diamond perfection with this stunning 3.02-carat oval diamond, distinguished by its exceptiona...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Elegant 1.64ct Ideal Cut Pear-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Elegant 1.64ct Ideal Cut Pear-Shaped Diamond - GIA Certified Introducing a diamond of unmatched beauty, this 1.64-carat pear-shaped diamond epitomizes elegance and sophistication. T...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

3.80 Carat Natural Loose Indicolite Tourmaline Included Gemstone From Earth Mine
Located in Peshawar, PK
Loose Indicolite Tourmaline Weight: 3.80 Carats Dimension: 10.6 x 6.8 x 5.3 Mm Colour: Blue Origin: Afghanistan Treatment: Non Certificate: On Demand Indicolite tourmaline, prized f...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline, Indicolite

Elegant 0.91ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Elegant 0.91ct Ideal Cut Emerald-Cut Diamond - GIA Certified This elegant 0.91-carat emerald-cut diamond is the epitome of classical beauty. Certified by the GIA, this diamond is gu...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

3.80 Carat Natural Loose Bi Colour Tourmaline Emerald Shape Gem
Located in Peshawar, PK
Loose Bi Colour Tourmaline Weight: 3.80 Carats Dimension: 11 x 7.1 x 5.4 Mm Colour: Green And Yellow Origin: Africa Certificate: On Demand Treatment: Non Tourmaline is a captivatin...
Category

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

Materials

Tourmaline

Captivating 3.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Captivating 3.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified Discover the enchanting beauty of this 3.01-carat cushion cut diamond, that blends classic allure with exceptiona...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Radiant 5.01ct Ideal Cut Round Diamond - GIA Certified
Located in רמת גן, IL
Radiant 5.01ct Ideal Cut Round Diamond - GIA Certified This stunning diamond boasts an impressive 5.01-carat weight, making it a remarkable diamond piece. The expert cut of this dia...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Luminous 1.50ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Luminous 1.50ct Ideal Cut Emerald-Cut Diamond - GIA Certified Celebrate refined sophistication with this 1.50-carat emerald-cut diamond, a symbol of clarity and brilliance. This dia...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Dazzling 1.50ct Ideal Cut Pear-Shaped Diamond - IGI Certified-Top Quality Dif
Located in רמת גן, IL
Dazzling 1.50ct Ideal Cut Pear-Shaped Diamond - IGI Certified-Top Quality Dif Discover the pinnacle of perfection with this exquisite pear-shaped diamond, weighing an impressive 1....
Category

2010s Israeli Loose Gemstones

Materials

Diamond

certified 10.35 carats colombian emerald cushion 3 pieces cut stone set gemstone
Located in Jaipur, RJ
certified 10.35 carats colombian emerald 3 pieces cut stone set for jewelry gem Gemstone - Emerald Weight - 10.35 carats Shape - cushion Size - 10x10x7 To 10x10x5 MM Quantity - 3 ...
Category

21st Century and Contemporary Colombian Art Deco Loose Gemstones

Materials

Emerald

Lustrous 2.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Lustrous 2.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified This exquisite 2.01-carat cushion cut diamond combines classic charm with a touch of modern sophistication. With its...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

4.30 Carats Cat’s Eye Tourmaline Stone Oval Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 4.30 carats Dimensions 11.90x7.85x5.30 mm Treatment none Origin Afghanistan Diaphaneity translucent Shape oval Cut cabochon The 4.30 carats Cat’s Eye Tourmaline Stone...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Cat’s Eye

Pristine 2.01ct Ideal Cut Natural Diamond - GIA Certified
Located in רמת גן, IL
Pristine 2.01ct Ideal Cut Natural Diamond - GIA Certified Elevate your collection with this 2.01-carat diamond, masterfully shaped into a cut-cornered rectangular form that combines...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Fascinating 3.01ct Ideal Cut Natural Diamond - GIA Certified
Located in רמת גן, IL
Fascinating 3.01ct Ideal Cut Natural Diamond - GIA Certified This exceptional diamond boasts a captivating 3.01-carat weight, showcasing its brilliance in a unique cut-cornered rect...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Sophisticated 4.01ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Sophisticated 4.01ct Ideal Cut Emerald-Cut Diamond - GIA Certified This exceptional diamond boasts a captivating 4.01-carat weight, showcasing its brilliance in a timeless emerald c...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.85 Carats Orange Citrine Stone Scissor Cut Natural Brazilian Gemstone
Located in Bangkok, TH
Weight 2.85 carats Dimensions 10.6x6.92x5.3 mm Treatment none Origin Brazil Clarity eye clean Shape octagon Cut scissor Imbued with the fiery hues of a Brazilian sunset, thi...
Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Citrine

Magnificent 3.11ct Ideal Cut Round Diamond - GIA Certified
Located in רמת גן, IL
Magnificent 3.11ct Ideal Cut Round Diamond - GIA Certified Discover the epitome of perfection with this exquisite 3.11-carat diamond, masterfully cut into a mesmerizing round shape ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

5.20 Carats Aquamarine Custom Precision Cut Natural Pakistani Gemstone
Located in Bangkok, TH
Weight 5.20 carats Dimensions 11.2x10.3x7.9 mm Treatment none Origin Pakistan Clarity SI Shape cushion Cut custom precision Crafted with meticulous precision, this stunning ...
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

0.33 Carat Marquise shaped diamond VS1 Clarity IGI Certified
Located in Kowloon, HK
100% NATURAL FANCY COLOUR DIAMOND ✪ Diamond Details ✪ ➛ Shape: Marquise ➛ Colour Grade: L ➛ Carat: 0.33 ➛ Clarity: VS1 ➛ IGI Certified *FEATURES OF THE DIAMOND* This 0.33-carat...
Category

2010s Asian Loose Gemstones

Materials

Diamond

HRDAntwerp certified 0.82 carat Emerald Shape Natural Diamond F VS1
Located in Dubai, UAE
We are natural diamond production company located in Dubai. Rapaport price for this diamond is $3,444.00, our price is -56% from the Rapaport price - $1515!!!! We ship world wide for...
Category

21st Century and Contemporary Emirian Modern Loose Gemstones

Materials

Diamond, White Diamond, Emerald

Luminous 1.07ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Luminous 1.07ct Ideal Cut Square Diamond - GIA Certified Discover the refined elegance of this exquisite 1.07-carat square-cut diamond, characterized by its stunning color grade tha...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Exquisite 0.71ct Ideal Cut Pear-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Exquisite 0.71ct Ideal Cut Pear-Shaped Diamond - GIA Certified Crafted for those with an eye for elegance, this stunning 0.71-carat pear-shaped diamond is a masterpiece of clarity ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.40 Carat Natural Apple Green Loose Peridot Cushion Shape Gem For Jewellery
Located in Peshawar, PK
Loose Peridot Weight: 2.40 Carats Dimension: 7.7 x 7.1 x 5.3 Mm Colour: Green Origin: Supat Valley, Pakistan Shape: Cushion Certificate: On Demand Treatment: Non Peridot, a vibrant...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Peridot

2.85 Carat Natural Loose Rhodolite Garnet Oval Shape Ring Gem
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 2.85 Carats Dimension: 9.8 x 6.6 x 5 Mm Colour: Red Origin: Africa Treatment: Non Shape : Oval Rhodolite garnet, a gemstone celebrated for its enchant...
Category

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

Materials

Rhodolite, Garnet

5.55 Carat Natural Loose Blueish Green Tourmaline Cushion Shape Gem
Located in Peshawar, PK
Loose Green Tourmaline Weight: 5.55 Carats Dimension: 9.4 x 9.2 x 8 Mm Colour: Green lagoon Origin: Afghanistan Shape: Cushion Certificate: On Demand Treatment: Non Tourmaline is a...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Natural Pastel Green Emerald Stone 1.95 Carats Gemstone for Jewelry Making
Located in Bangkok, TH
Natural Light Green Emerald Gemstone, Available For Sale At wholesale Price Natural High Quality, 1.95 Carats Loose Emerald From Afghanistan. Product Information: GEMSTONE TYPE: Natural Pastel Green Emerald Stone...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

Brilliant 1.07ct Ideal Cut Pear-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Brilliant 1.07ct Ideal Cut Pear-Shaped Diamond - GIA Certified Elegantly crafted, this remarkable 1.07-carat pear-shaped diamond is a beacon of purity and light. Certified by the GI...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Magnificent 5.01ct Ideal Cut Pear-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Magnificent 5.01ct Ideal Cut Pear-Shaped Diamond - GIA Certified Featuring a breathtaking 5.01-carat pear-shaped diamond, this diamond is a masterpiece of craft and clarity. Certifi...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

AA Quality 2.50 Carat Natural Loose Emerald Ring Gemstone Swat Pakistan Mine
Located in Peshawar, PK
Loose Emerald Weight: 2.50 Carats Dimensions: 10.1 x 7.5 x 4.5 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

1.90 Carat Loose Light Yellow Heliodor Cushion Shape Gem From Brazil Mine
Located in Peshawar, PK
Loose Heliodor Weight: 1.90 Carat Dimension: 8 x 7.5 x 4.9 Mm Origin: Brazil Shape: Square Cut : Cushion Certificate: On Demand Heliodor, a captivating member of the beryl mineral ...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Beryl

Radiant 2.01ct Ideal Cut Pear-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Radiant 2.01ct Ideal Cut Pear-Shaped Diamond - GIA Certified This stunning 2.01-carat pear-shaped diamond exudes sophistication and brilliance. Accompanied by a GIA certificate, thi...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.75 Carats Vivid Red Loose Garnet Stone Asscher Cut Natural African Gemstone
Located in Bangkok, TH
Weight 2.75 carats Dimensions 7.3x7.2x5.52 mm Treatment none Origin Africa Clarity SI Shape octagon Cut Asscher Behold the exquisite allure of this 2.75 carat Vivid Red Gar...
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

Spectacular 4.03ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Spectacular 4.03ct Ideal Cut Square Diamond - GIA Certified Introducing a breathtaking 4.03-carat square diamond, a true marvel of nature's beauty combined with meticulous craftsman...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.85 Carats Light Yellow Scapolite Stone Asscher Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.85 carats Dimensions 7.8x7.8x6.9 mm Treatment none Origin Tanzania Clarity eye clean Shape octagon Cut Asscher Behold the mesmerizing beauty of this Tanzanian gemsto...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Other

Dazzling 2.46ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Dazzling 2.46ct Ideal Cut Square Diamond - GIA Certified Discover the unparalleled beauty of this 2.46-carat square diamond, a testament to pure elegance and precision. Accompanied ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Stunning 1.21ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Stunning 1.21ct Ideal Cut Square Diamond - GIA Certified Celebrate exceptional craftsmanship and unparalleled quality with this 1.21-carat square diamond, a true masterpiece of clar...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Brilliant 1.01ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Brilliant 1.01ct Ideal Cut Square Diamond - GIA Certified Behold the epitome of perfection with this stunning 1.01-carat square diamond, a symbol of clarity and brilliance. Certifie...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Majestic 3.02ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Majestic 3.02ct Ideal Cut Square Diamond - GIA Certified Unveil the epitome of elegance with this striking 3.02-carat square diamond, meticulously crafted to radiate unmatched lumin...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Exquisite 1.20ct Ideal Cut Square Diamond - GIA Certified
Located in רמת גן, IL
Exquisite 1.20ct Ideal Cut Square Diamond - GIA Certified Discover the unparalleled beauty of this 1.20-carat square diamond, a true masterpiece of clarity and color. This diamond ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Bright Red Round brilliant Garnet Pair for Earrings Jewelry
Located in Bangkok, TH
Gemstone Name Imperial Bright Red Garnet Gemstone Weight 4.45 Carats Dimensions 8 x 8mm Shape Round Locality Round Brilliant Clarity Loupe Clean Treatment None Very lustrous fine qua...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Garnet

Stunning 14.35 Carat Natural Loose Amethyst Gemstone For Pendant Jewellery
Located in Peshawar, PK
Loose Amethyst Weight: 14.35 Carats Dimension: 17.9 x 11.4 x 10 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Emerald Amethyst, a stunning variety o...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

12.55 Carats Natural Loose Golden Topaz Cushion Shape Gem Necklace Jewellery
Located in Peshawar, PK
Loose Topaz Weight: 12.55 Carats Dimension: 12.9 x 13.1 x 9.5 Mm Origin: Skardu, Pakistan Shape: Cushion Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radian...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

Huge 18.60 Carat Natural Loose Amethyst Flower Cut Gem For Necklace
Located in Peshawar, PK
Loose Amethyst Weight: 18.60 Carats Dimension: 16.4 x 15.2 x 12.3 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Rectangular Amethyst, a stunning var...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

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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