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Loose Gemstones For Sale
2.85 Carat Adorable Natural Loose Emerald Gemstone From Swat Mine
Located in Peshawar, PK
Loose Emerald Weight: 2.85 Carats Dimensions: 8.8 x 7.5 x 4.8 Mm Origin: Swat Pakistan Shape: Emerald Color: Green Treatment: Non Certificate: On Demand The Swat Emerald, also known...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Emerald

3.43 Carat Natural Loose Hiddenite Oval Shape Spodumene For Jewellery Making
Located in Peshawar, PK
Loose Hiddenite Weight: 3.43 Carat Dimension: 10.9 x 7.3 x 5.6 Mm Certificate: Available Origin: Afghanistan Shape: Oval Hiddenite is a fascinating gemstone known for its stunn...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Other

Brilliant 1.51ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Brilliant 1.51ct Ideal Cut Emerald-Cut Diamond - GIA Certified Experience the sheer brilliance of this 1.51-carat emerald-cut diamond, crafted to captivate and charm. Ideal for craf...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Certified Natural Loose 1.79 Carat Lustrous Ruby Oval Shape Gem From Africa
Located in Peshawar, PK
Loose Ruby Weight: 1.79 Carats Dimension: 8.3 x 6.1 x 3.5 Mm Origin: Madagascar, Africa Shape: Oval Color: Pink Treatment: Non / Natural Certificate: Available Jagdalek, located i...
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Ruby

Hot Pink Tourmaline Stone 4.80 carats Oval Cut Natural Gemstone from Nigeria
Located in Bangkok, TH
Weight 4.80 carats Dimensions 11.21x9.71x6.57 mm Treatment none Origin Nigeria Clarity VVS (Very, Very Slightly Included) Shape Oval Cut Oval Faceted The Hot Pink Tourmaline...
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline

4.00 Carats Cat’s Eye Tourmaline Stone Oval Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 4.00 carats Dimensions 11.1x8.86x5.50 mm Treatment none Origin Afghanistan Diaphaneity translucent Shape oval Cut cabochon The 4.00 carats Cat’s Eye Tourmaline Stone is...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Cat’s Eye

GIA Certified Paraiba Tourmaline 1.52 Carat Natural
Located in Laguna Niguel, CA
It comes with the Original GIA Certificate Natural Paraiba Tourmaline Carat Weight: 1.52 Carats Measurements: 6.99 x 6.13 x 5.57 mm
Category

21st Century and Contemporary Contemporary Loose Gemstones

Materials

Tourmaline, Paraiba

Precious 4.01ct Ideal Cut Round-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Precious 4.01ct Ideal Cut Round-Shaped Diamond - GIA Certified Presenting a splendid 4.01-carat round diamond that exemplifies craftsmanship and beauty. The cut of this diamond is g...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Magnificent 2.00ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Magnificent 2.00ct Ideal Cut Emerald-Cut Diamond - GIA Certified Embrace the elegance of this exceptional 2.00-carat emerald-cut diamond, a beacon of brilliance and precision. Certi...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Captivating 3.20ct Ideal Cut Cushion-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Captivating 3.20ct Ideal Cut Cushion-Shaped Diamond - GIA Certified Experience the allure of this magnificent 3.20-carat cushion cut diamond, a treasure with a color grade that radi...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Exquisite 4.02ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Exquisite 4.02ct Ideal Cut Emerald-Cut Diamond - GIA Certified Presenting a truly stunning diamond, this emerald cut diamond weighs an impressive 4.02 carats, embodying perfection w...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

2.10 Carat Natural Loose Rhodolite Garnet Cushion Shape Gem For jewellery
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 2.10 Carats Dimension: 7.4 x 6.3 x 5 Mm Colour: Red Origin: Africa Treatment: Non Shape : Cushion Rhodolite garnet, a gemstone celebrated for its ench...
Category

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

Materials

Garnet, Rhodolite

1.02 Carat Imperial Topaz Loose Gemstone EM 7x4mm
Located in Columbus, OH
Presenting a 1.02 carat Imperial Topaz gemstone! A valuable addition to to any collection or jewelry piece! Specifications Stone: Imperial Topaz Shape: Emerald cut Treatment: Heat...
Category

2010s American Loose Gemstones

Materials

Topaz, Imperial Topaz

1.90 Cts Natural Soft Baby Pink Tourmaline Loose Gemstone From Afghanistan Mine
Located in Peshawar, PK
Faceted Tourmaline Weight: 1.90 Carats Dimension: 7.8x6.9x5.2 Mm Origin: Kunar Afghanistan Shape: Cushion Color: Pink Treatment: Non Certficate: On Customer Demand . Pink tourma...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Shining 0.70ct Ideal Cut Oval-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Shining 0.70ct Ideal Cut Oval-Shaped Diamond - GIA Certified Experience unparalleled elegance with this breathtaking 0.70-carat oval diamond. This diamond is certified by the GIA, a...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Lustrous 1.06ct Ideal Cut Oval-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Lustrous 1.06ct Ideal Cut Oval-Shaped Diamond - GIA Certified Presenting a magnificent 1.06-carat oval diamond, a true symbol of pristine beauty. The refined oval cut not only enhan...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Classic 0.85ct Ideal Cut Round-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Classic 0.85ct Ideal Cut Round-Shaped Diamond - GIA Certified Behold the pure radiance of this 0.85-carat round brilliant diamond, a diamond that truly stands out with its impeccabl...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

4.70 Carats AAA+ Grade Tanzanite Stone Oval Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 4.70 carats Dimensions 11.5x9.6x6.4 mm Treatment Heated Origin Tanzania Clarity loupe clean Shape oval Cut fancy oval This exquisite 4.70 carats AAA+ Grade Tanzanite ...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Tanzanite

Lustrous Loose Ametrine Stone 13.035 Faceted Ametrine Flawless Loupe Clean
Located in Bangkok, TH
Lustrous Loose Ametrine Stone of 13.035 carats from Bolivia has a wonderful cut in a Oval Like shape, incredible Bi-color. Great brilliance. This gem is...
Category

21st Century and Contemporary Bolivian Modern Loose Gemstones

Materials

Other

4.35 Carat Natural Loose Light Golden Topaz Cushion Shape Gem Pakistani Mine
Located in Peshawar, PK
Loose Topaz Weight: 4.35 Carats Dimension: 9.3 x 8.6 x 6.4 Mm Origin: Skardu, Pakistan Shape: Cushion Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radiant g...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

2.46 carats Tanzanite rich blue color perfect cut
Located in bangkok, TH
Tanzanite rich blue color of Tanzania perfect cut heart shape has a beautiful sparkle Weight 2.46 carats Size 8.4mm Rich blue color Loop clean
Category

Early 2000s Loose Gemstones

Materials

Tanzanite

Certified Natural 1.10 Carat Loose Sapphire Cushion Shape Gem For Ring
Located in Peshawar, PK
Loose Sapphire Weight: 1.10 Carats Dimension: 5.5 x 5.3 x 3.9 Mm Colour: Greenish Blue Origin: Africa Treatment: Heated Certificate: Available Shape: Cushion Sapphire, a gemstone...
Category

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

Materials

Sapphire

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

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

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

Pretty 2.05 Carat Natural Loose Emerald Set For Jewellery Making
Located in Peshawar, PK
Loose Emerald Weight: 2.05 Carats Sizes: 0.60 to 0.75 Carat Origin: Swat Pakistan Color: Green Treatment: Non Certificate: On Demand The Swat Emerald, also known as the Mingora Eme...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Emerald

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

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

Huge 20.60 Carat Natural Loose Dark Purple Amethyst Cushion Shape Gemstone
Located in Peshawar, PK
Loose Amethyst Weight: 20.60 Carats Dimension: 17.7 x 14.9 x 12.3 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Cushion Amethyst, a stunning variety...
Category

21st Century and Contemporary Brazilian Arts and Crafts 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

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

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

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

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

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

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

Timeless 0.98ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Timeless 0.98ct Ideal Cut Emerald-Cut Diamond - GIA Certified Discover pure sophistication with this exquisite 0.98-carat emerald-cut diamond. This diamond comes with a GIA certific...
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

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

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

Classic 1.50ct Ideal Cut Emerald-Cut Diamond - GIA Certified
Located in רמת גן, IL
Classic 1.50ct Ideal Cut Emerald-Cut Diamond - GIA Certified Unveil the sophisticated charm of this 1.50-carat emerald-cut diamond, distinguished by its refined color grade, which i...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

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

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

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

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

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

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

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

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

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

Rare Purple Natural Amethyst Gemstone, 27.30 Ct Emerald Cut for Pendant Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Amethyst PIECE(S): 1 WEIGHT: 27.30 Carats SHAPE: Step Emerald Cut SIZE (MM): 21.79 x 14.32 x 11.82 COLOR: Purple CLARITY: Eye Clean TREATMENT: None ORIGIN: Africa CER...
Category

21st Century and Contemporary Congolese Contemporary Loose Gemstones

Materials

Amethyst

Rare Green Natural Tourmaline Gemstone, 5.90 Ct Step Cushion Mix Cut for Ring
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 5.90 Carats SHAPE: Step Cushion Mix Cut SIZE (MM): 12.01 x 9.21 x 7.36 COLOR: Green CLARITY: Approx Eye Clean TREATMENT: None ORIGIN: Af...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

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

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

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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