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Unset Tourmaline

1.39ct Pear Pink Tourmaline Loose unset gemstone certified
Located in Jupiter, FL
Pink tourmaline,pear shape., certified! NATURAL GEMSTONE(S): Tourmaline Clarity/Color: Slightly
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

1.02 Oval Unset Unmounted Loose Pink Tourmaline Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This 1.02 carat oval pink tourmaline is sure to put a smile on your face! With its slightly
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Rubelite, Tourmaline

33.40 Carat Bi-Color Tourmaline Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This exceptionally clean and brilliant oval facetted bi-colored tourmaline actually displays more
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

3.28 Carat Bi-Color Watermelon Tourmaline, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This pretty bi-color tourmaline is a beautiful marriage of pink and green of equal saturation
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

2.70 Carat Elongated Pear Shape Rubellite Tourmaline, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This vibrant pink rubellite tourmaline pear would be beautiful set as a sleek, ultra-sophisticated
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Rubelite, Tourmaline

Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Very unique Copper Tourmaline round gem, offered loose to someone special. Returns are accepted and
Category

21st Century and Contemporary Unknown Contemporary Loose Gemstones

Materials

Tourmaline, Other

Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
Free Shipping
W 0.37 in Dm 0.37 in L 0.37 in
1.90 Carat Emerald Cut Octagonal Loose Unset Unmounted Green Tourmaline Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This bright, emerald-cut green tourmaline is so lively and pretty! It weighs 1.90 carats and
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

3.87 Carat Unset Loose Unmounted Oval Cat's Eye Green Tourmaline Gemstone
Located in Los Angeles, CA
This lovely green cat's eye tourmaline is a rare occurance in nature. Weighing 3.87 carats and
Category

Antique 15th Century and Earlier Brazilian Loose Gemstones

Materials

Tourmaline

Tourmaline Earrings Gemstone Pair 11.26 Carat Unset Asscher Cut Loose Gems
By Merkaba
Located in Beverly Hills, CA
Superb pair of light bluish green, "loupe clean", Tourmaline gem square octagons, weighing a total
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline

Blue Green Tourmaline Gem 9.64 Carat Unset Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exclusive 9.64 carat elongated emerald-cut Bluish Green Tourmaline gem offered loose to a very
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Other, Tourmaline

5.97 Carats Total Weight, Pair of Bi-Colored Tourmalines, Unset Loose Gemstones
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This beautiful matched pair of elongated bi-color tourmaline have a stunning division of classic
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Tourmaline

Greenish Yellow Tourmaline Ring Gem 17.54 Carat Unset Emerald Cut Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exclusive 17.54 carat, "loupe clean", greenish yellow Tourmaline, emerald-cut gem, offered loose to
Category

21st Century and Contemporary Namibian Contemporary Loose Gemstones

Materials

Tourmaline, Other

Green Blue Tourmaline Ring Gem 4.35 Carat Unmounted Kite Shape Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Exotic greenish blue 4.35 carat "loupe clean" Tourmaline loose gemstone. This kite shaped gem is
Category

21st Century and Contemporary Namibian Contemporary Loose Gemstones

Materials

Tourmaline

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Grossular Garnet 3.53 Carat Pear Shape Gem Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Magnificent 3.53 carat Grossular Garnet pear shape gem offered loose to someone special. Returns are accepted and paid by us within 7 days of delivery. We offer supreme custom jewelr...
Category

21st Century and Contemporary Unknown Modern Loose Gemstones

Materials

Garnet, Other

Heart garnet ring. 14k Gold Heart Eternity Ring with Heart Garnets!
By Daizy Jewellery
Located in Istanbul, TR
14 kt solid gold heart Eternity ring with heart natural garnets. January birthstone. Heart eternity ring band. Valentines gift jewelry. Full circle of hearts. Weight: 2.2 g. (depen...
Category

2010s Turkish Modern Fashion Rings

Materials

Garnet, 14k Gold

AJD Pear Shape Brasilian Aquamarine and Diamond Ring March Birthstone
By Aria Jewelry Design
Located in Raleigh, NC
Glittering pear shape, 5.32ct Aquamarine in Diamond halo ring. This one of a kind ring is breathtaking. It sparkles and dances on your finger. The delicate Diamond halo enhances th...
Category

21st Century and Contemporary Brazilian Artisan Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold

4.70 Carats Sea Blue Loose Tourmaline Pair Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 4.70 carats Dimensions 9.2x6.85x4.6 mm Treatment none Origin Afghanistan Clarity VVS (Very, Very Slightly Included) Shape octagon Cut emerald Behold the exquisite all...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.41 Carats Natural Sweet Pink Tourmaline Stone Tourmaline Loose Gemstone
Located in Bangkok, TH
Natural Sweet Pink Tourmaline Stone, Available For Sale At Wholesale Price, Natural High-Quality, 3.41 Carats Loose Certified Pink Tourmaline Gemstone From Madagascar. Product Infor...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Tourmaline

2.40 Carat Pink Tourmaline Diamond Sapphire Rose Gold Bridal Ring
By Roshe Jewels
Located in Los Angeles, CA
Pretty and dainty Tourmaline, Diamond and Sapphire ring that can transform into a unique proposal ring! 2.40 Carat Tourmaline Diamond Sapphire 14K Rose Gold Bridal Ring Item Specs.:...
Category

21st Century and Contemporary American Contemporary Bridal Rings

Materials

Tourmaline, Sapphire, Diamond, Rose Gold, 14k Gold

Art Deco Style Greek Key Diamond Platinum Tiara
Located in Geneva, CH
Diamond tiara of Art Deco design, composed of graduated Greek key pattern and center medallion, set throughout with old mine cut diamonds on platinum. Design: Art Deco Period: 21th...
Category

21st Century and Contemporary Swiss Art Deco More Jewelry

Materials

Diamond, Platinum

Bulgari Rome Elizabeth Taylor Style Colombian Emerald Diamond Necklace Set
By Bulgari
Located in New York, NY
Bulgari Rome Elizabeth Taylor Style Colombian Certified Emerald Diamond NecklaceDetaches Into Two Bracelets and Detachable Pendant An 18k yellow gold necklace was set with sixteen ...
Category

Vintage 1970s Italian Drop Necklaces

Materials

Diamond, Emerald, 18k Gold

Untreated Russian Emerald Ring Gem 2.53 Carats No Oil Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Special, untreated - "no oil" - 2.53 carat, rich, medium-light, Russian Emerald gem from the Malysheva mine in Sverdlovsk Oblast, the northern part of the Ural mountains Emerald fiel...
Category

21st Century and Contemporary Russian Contemporary Engagement Rings

Materials

Beryl, Emerald

Stunning Victorian Old-Cut Diamond Fringe Tiara Convertible to Necklace Bracelet
Located in London, GB
A stunning antique diamond tiara convertible to a necklace, c.1880s, the tiara designed as a relatively short compact fringe which almost gives the impression of a bandeau style tiar...
Category

Antique Late 19th Century Pendant Necklaces

Materials

Diamond, Gold, Silver

14k Gold Pendant with Tanzanite, Sapphires and Diamonds
By Daizy Jewellery
Located in Istanbul, TR
14k gold pendant with tanzanite, sapphires and diamonds Weight: 1.4 g Pendant size in mm - 35х10.33 mm. Central stone: tanzanite Cut: pear Weight: aprx 0.7 ct. Color: from blue t...
Category

2010s Turkish Modern Pendant Necklaces

Materials

Diamond, Sapphire, Tanzanite, 14k Gold

2.26 Carat Spessartite Mandarin Garnet Octagon, Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This lively orange spessartite garnet has beautiful color! The unusual modified brilliant facets and exceptional luster allow for superior light return and vibrance. This gem has a v...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Garnet

Cornflower Blue Sapphire Fine Gemstone for Jewelry Making Ceylon Sapphire Gems
Located in Bangkok, TH
Cornflower Blue Natural Ceylon Sapphire, available for sale, natural high-quality loose gemstone, oval mixed cut, 2.74 carats certified sapphire gemstone from Ceylon, Sri Lanka. Pro...
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Amatrine Baby knot style ring in 18ct yellow gold
Located in Brisbane, AU
Natural Amatrine mined stone emerald cut Custom made to order* Please advise your size to get started and whether you would like 18ct white, rose or yellow gold. Free shipping
Category

2010s Australian Artist Engagement Rings

Materials

Amethyst, 18k Gold, Yellow Gold

65.49 Carat Amethyst Oval, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This luscious royal purple amethyst weighs 65.49 carats and would make a perfectly regal and eye-catching pendant! It is beautifully faceted and crystal clean, with velvety rich purp...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Amethyst

65.49 Carat Amethyst Oval, Unset Loose Gemstone
65.49 Carat Amethyst Oval, Unset Loose Gemstone
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W 0.91 in D 0.7 in L 1.15 in
7.20 Carat Oval Tanzanite, Unset Loose Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Top quality tanzanites like this 7.20 carat oval make it easy to see why this gorgeous gemstone is so immensely popular! Ovals are one of the most versatile shapes for jewelry design...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tanzanite

Recent Sales

Rubellite Tourmaline Ring Gem 24.5 Carat Unset Cut Loose Gemstone
Located in Shanghai, CN
Remarkable Rubelite Tourmaline oval-cut gem, offered loose to a gemstone lover. Returns are
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Tourmaline

Rubellite Tourmaline Ring Gem 24.5 Carat Unset Cut Loose Gemstone
Rubellite Tourmaline Ring Gem 24.5 Carat Unset Cut Loose Gemstone
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W 0.654 in D 0.387 in L 0.845 in
4.29 Carat Paraiba Tourmaline Oval, Unset Loose Gemstone
Located in GENT, BE
This oval-shaped Paraiba tourmaline was founded in Mozambique and has an exceptional Windex blue
Category

2010s African Loose Gemstones

Materials

Tourmaline, Paraiba

5.48 Carat Paraiba Tourmaline Oval, Unset Loose Gemstone
Located in GENT, BE
This oval-shaped Paraiba tourmaline is truly remarkable! With a weight of 5.48 carats and
Category

2010s African Loose Gemstones

Materials

Tourmaline, Paraiba

Green Tourmaline Ring Gem 5.10 Carat Loose Unset
By Merkaba
Located in Beverly Hills, CA
Pristine 5.10 carat Mint Green Tourmaline cushion cut gem offered loose to someone special. Returns
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline, Other

Pink Tourmaline Ring Gem 7.82 Carat Unset Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Exquisite 7.82 carat Pink Tourmaline cushion cut gem offered loose to a classy lady. Returns are
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline, Other

Privately Curated Fancy Unset Loose Tourmaline Collection, 630.13 Carats Total
By Sarosi By Timeless Gems
Located in Los Angeles, CA
upon request. This tourmaline collection includes 32 gemstones, 630.13 carats total. Individual stones
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

Copper Tourmaline Ring Gem 3.15 Carat Round Unset Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Very unique Copper Tourmaline round gem, offered loose to someone special. Returns are accepted and
Category

21st Century and Contemporary Contemporary Loose Gemstones

Materials

Tourmaline, Other

Bicolor Tourmaline Ring Gem 14.28 Carat Unset Round Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exceptional 14.28 carat Autumn Bicolor Tourmaline round gem, offered loose to someone special
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline, Other

10.83 Carat Red Rubellite Tourmaline, GIA, Unset Pendant, Enhancer Gem
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This bright and highly saturated rubellite tourmaline has superior clarity and is so lively
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Rubelite, Tourmaline

Green Tourmaline Ring Gem 6.51 Carat Unset Cushion Loose Gemstone
By Tamir
Located in Beverly Hills, CA
6.51 carat Green Tourmaline cushion gem, offered loose to a gemstone lover. Returns are accepted
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Tourmaline, Other

Pink Tourmaline Ring Gem 9.29 Carat Unset Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Marvelous 9.29 carat Pink Tourmaline oval gem, offered loose to a very special lady. Returns are
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline, Other

Pink Tourmaline Ring Gem 11.35 Carat Oval Loose Unset Gemstone
By Tamir
Located in Beverly Hills, CA
Magnificent 11.35 carats "loupe clean" Pink Tourmaline oval gem, offered loose to an elegant lady
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline, Other

Salmon Pink Tourmaline Ring Gem 5.11 Carat Unset Oval Loose Gemstone
By Tamir
Located in Beverly Hills, CA
5.11 carat Salmon Tourmaline gem with pink undertones, offered loose to a fine gemstone collector
Category

21st Century and Contemporary Contemporary Loose Gemstones

Materials

Other, Tourmaline

Purple Pink Tourmaline Ring Gem 1.88 Carat Unset Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Pristine 1.88 carat purplish pink Tourmaline oval gem, offered loose to a gemstone lover
Category

21st Century and Contemporary Mozambican Contemporary Loose Gemstones

Materials

Tourmaline

Orangey Pink Tourmaline Ring Gem 6.48 Carat Unset Oval Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Pristine 6.48 carat Peach Tourmaline oval gem offered loose to a gemstone lover. Returns are
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline, Other

Mint Green Tourmaline Ring Gem 3.63 Carat Unset Oval Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Splendid 3.63 carat Mint Green Tourmaline oval gem, offered loose to a gem lover. Returns are
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Other

Green Tourmaline Ring Gem 7.38 Carat Emerald Cut Loose Unset Gemstone
By Tamir
Located in Beverly Hills, CA
7.38 carat Green Tourmaline emerald-cut gem, offered loose to a classic lady or gentleman. Returns
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Other, Tourmaline

Mint Green Tourmaline Ring Gem 5.00 Carat Unset Round Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Vibrant 5.00 carat, "loupe clean", Mint Green Tourmaline round gem, offered loose to a gem lover
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Tourmaline, Other

Rubellite Tourmaline Ring Gem 17.26 Carat Unset Emerald Cut Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Remarkable 17.26 Rubelite Tourmaline emerald-cut gem, offered loose to a gemstone lover. Returns
Category

21st Century and Contemporary Mozambican Contemporary Loose Gemstones

Materials

Tourmaline, Rubelite

Blue Green Tourmaline Gemstone Pair of 3.16 Carat Unset Loose Emerald Cut Gems
By Tamir
Located in Beverly Hills, CA
Superb pair of Bluish Green Tourmaline, Emerald Cut gems, weighing a total of 3.16 carats, offered
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Tourmaline, Other

Unheated 20.39 Carat Purple Pink Spinel GIA Unset Pendant Enhancer Collector Gem
By Sarosi By Timeless Gems
Located in Los Angeles, CA
rare than pink tourmalines and pink sapphires, especially in large sizes. They are also generally
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Spinel

Paraiba Tourmaline Ring Gem 2.02 Carat Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Rare and exclusive 2.02 carat, nearly "loupe clean", Paraiba Tourmaline oval gem, offered unmounted
Category

21st Century and Contemporary Mozambican Contemporary Engagement Rings

Materials

Tourmaline, Paraiba

Paraiba Tourmaline Ring Gem 2.02 Carat Oval Loose Gemstone
Paraiba Tourmaline Ring Gem 2.02 Carat Oval Loose Gemstone
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W 0.29 in D 0.21 in L 0.35 in
Pink Tourmaline Ring Necklace Gem 4.27 Carat Unmounted Kite Shape Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Sensational 4.27 carat Kite shaped Pink Tourmaline loose gemstone, offered unset to a passionate
Category

21st Century and Contemporary Nigerian Contemporary Loose Gemstones

Materials

Tourmaline

21.90 Carat Cherry Blossom Pink Tourmaline Cushion, Unset Pendant Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This lovely pink tourmaline will remind you of cherry blossoms in the spring! It is delicate in
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Tourmaline

.34 Carat Brazilian Paraiba Tourmaline, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. Very little Paraiba tourmaline is mined; much less in this color and quality. This pear shaped Paraiba
Category

21st Century and Contemporary Brazilian Artisan Loose Gemstones

Materials

Tourmaline, Paraiba

Green Tourmaline Ring Gem 3.15 Carat Unset Trillion Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Unique 3.15 carat bluish Green Tourmaline trillion gem, offered loose to a gemstone lover. Returns
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Other

Loose Rubellite Tourmaline Lot, 9 Unset Pear Cut Gemstones, 13.18 Carat Total
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This set of loose gemstones, aka a "lot*" in the trade, has nine pear-shaped, unset rubellite (dark
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Blue Green Tourmaline Ring Gem 4.65 Carat Unset Cushion Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Marvelous 4.65 carat Bluish Green Tourmaline cushion gem, offered loose to someone special. Returns
Category

21st Century and Contemporary Namibian Modern Loose Gemstones

Materials

Tourmaline, Other

Mint Green Tourmaline Ring Gem 4.96 Carat Unset Pear Shaped Loose Gemstone
By Tamir
Located in Beverly Hills, CA
Breathtaking 4.96 carat Mint Green Tourmaline gem, offered loose to a fine gemstone collector
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Other, Tourmaline

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Unset Tourmaline For Sale on 1stDibs

Find the exact unset tourmaline you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from 18k Gold, Gold and Platinum — can elevate any look. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. A unset tourmaline from Sarosi By Timeless Gems, Tamir and Merkaba — each of whom created a beautiful version of this treasured accessory — is worth considering. A cushion cut version of this piece has appeal, but there are also oval cut and emerald cut versions for sale. When shopping for a unset tourmaline, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Unset Tourmaline?

The price for a unset tourmaline starts at $550 and tops out at $913,000 with these rings, on average, selling for $5,705.

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.