Skip to main content

Loose Gemstones

to
309
1,491
441
Loose Gemstones For Sale
1.82 Carat Natural Unheated Cornflower Blue Sapphire Loose Gemstone from Ceylon
Located in Horana, LK
Luscious cornflower hues on this natural unheated Ceylon sapphire come alive in sunlight a highly desirable feature in a cornflower blue sapphire. Natural unheated cornflower blue s...
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire

Rare Mint Green Natural Tourmaline Loose Gemstone, 5.80 Ct Cushion Cut for Ring
Located in Peshawar, PK
Captivating Mint Green Tourmaline Loose Gemstone - Ethically Sourced from Afghanistan Gemstone Type: Tourmaline Weight: 5.80 Carats Dimensions: 9.44 x 10.36 x 8.63 mm Color: Mint Gr...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

5ct Unheated Mozambican 'Pigeons Blood' Ruby
Located in London, GB
This 5.03ct unheated certified 'Pigeons Blood' Red Ruby is a gemstone of very high and fine quality. With a carat weight of above 5 carat, it is a rare find in natural stones to ha...
Category

2010s Mozambican Loose Gemstones

Materials

Ruby

"Kimberley Heart" Pink Diamond - 0.34ct 2PP P2 Argye Certified
Located in ADELAIDE, SA
Rare and unique Argyle certified Pink Diamond. Round Brilliant Pink diamond weight: 0.34ct, colour: 2PP, clarity: P2. Argyle certificate ID Number: 325803 this is also laser inscribed on the girdle of the diamond. This diamond also comes with a GIA Coloured diamond report number: 2205642090. We have named this diamond the “Kimberley Heart” owing to the unique heart-shaped outline formed in the gap between two internal inclusions. The presence of this heart is quite remarkable, we have never seen a diamond quite like this. Australian pink diamonds...
Category

21st Century and Contemporary Australian Modern Loose Gemstones

Materials

Pink Diamond

3.50 carat 'Pigeons Blood' Red Burmese Ruby - Unheated
Located in London, GB
This 3.50ct+ unheated Burmese Ruby is certified as 'Pigeons Blood' Red by the GRS. This stone exhibits a number of desirable qualities that a buyer should look for when purchasing ...
Category

2010s Burmese Loose Gemstones

Materials

Ruby

7.80 Carats Tourmaline Match Pair, Mix Color Tourmaline Round Cut Stones
Located in Jaipur, RJ
Gemstone - Tourmaline Weight- 7.80 Carats Shape - Round Size - 6 MM Pieces - 9
Category

21st Century and Contemporary Brazilian Art Deco Loose Gemstones

Materials

Tourmaline

Certified Old Mine Cut Diamond 1.88 Carat
Located in Antwerpen, BE
Please revise all the details, photos, videos, and certificate carefully and familiarize yourself with our KYC Policy, below,. Every diamond we offer has a captivating story to tell...
Category

Early 18th Century Belgian Artisan Antique Loose Gemstones

Materials

Diamond

GIA 5.01 Carat E VS2 NO FLUO Certified Engagement Diamond Round Brilliant Cut
Located in Bergamo, BG
Stunning GIA 5.01 Carat E VS2 NO FLUO Certified Engagement Diamond Round Brilliant Cut GIA Report Number = 15678430 Shape and Cutting Style = Round Brilliant Measurements = 11.18 - ...
Category

21st Century and Contemporary Italian Loose Gemstones

Materials

Diamond, White Diamond, 18k Gold

Natural Zambian Emerald 10.95 Carat Pear Cabochon Loose Gemstone
Located in Hong Kong, HK
A Very Beautiful Zambia Emerald Pear Cabochon Loose Gemstone is Unique For Its Shape . 10.95 Carat with a elegant Green color and excellent clarity. Als...
Category

21st Century and Contemporary Hong Kong Modern Loose Gemstones

Materials

Emerald

4.25 Carats Emerald Cut Loose Light Green Amethyst Brazil Mine Gemstone
Located in Peshawar, PK
Faceted Green Amethyst Weight: 4.25 Carats Dimension: 10.4x8.4x7.4 Mm Origin: Brazil Shape: Emerald Cut/Facet: Asscher Color: Green Certificate: On Demand Green amethyst, also ...
Category

2010s Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst, Quartz

Certified 2.41 Carats Mozambique Ruby Oval Faceted Cutstone No Heat Natural Gem
Located in Jaipur, RJ
As we are auction partners at Gemfields, we have sourced these rubies from winning auctions and had cut them in our in house manufacturing responsibly. Weight: 2.41 Carats Size: 10x...
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Ruby

Certified 1.46 Carats Natural Pink Loose Ruby Ring Gem From Afghanistan Mine
Located in Peshawar, PK
Loose Ruby Weight: 1.46 Carats Dimension: 6.38x6.05x3.92 Mm Origin: Jagdalek Afghanistan Shape: Cushion Color: Pink Treatment: Non / Natural Certificate: Available Jagdalek, locat...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Star Ruby, Ruby

2.75 carats Loose Blue Aquamarine Stone Heart Cut Natural Madagascar's Gemstone
Located in Bangkok, TH
Weight 2.75 carats Dim 8.5x10.5x5.8 mm Clarity VVS Origin Madagascar Treatment None Shape Heart Cut Mix Step Embracing the allure of Madagascar's gemstone treasures, a magnifi...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Aquamarine

Certified Unheated Parti Sapphire - 1.67ct
Located in Antwerpen, BE
Sapphires, like Rubies, are a variation from the mineral species corundum, composed of aluminum and oxygen. It is a fascinating gemstone mined in Australia, Burma, Cambodia, Sri Lank...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Sapphire

Vivid Red Spinel ( 6.85 carat ) Wholesale Offer
Located in Omaha, NE
This beautiful 6.85 carat Vivid Red Spinel is up for grabs hailing all the way from Luc Yen Vietnam . Spinel in this size and Color are very rare to find with price tag, in retail...
Category

Early 2000s Vietnamese Loose Gemstones

Materials

Spinel

2.70 carats Loose Lavender Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.70 carats Dimensions 8.65x7.26x4.80 mm Treatment none Origin Tanzania Clarity Loupe clean Shape cushion Cut fancy cushion The exquisite Lavender Spinel stone, boast...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

4.285ct Natural Ruby Octagonal Cut Loose Gemstone
Located in Sheridan, WY
Elevate your jewelry designs with the captivating allure of our 4.285 100% Natural Ruby Octagonal Cut Loose Gemstone. This exquisite gem, with its mesmerizin...
Category

2010s African Artisan Loose Gemstones

Materials

Ruby

7.85 Carat Vivid Red Spinel
Located in Omaha, NE
Today we have this beautiful, deep, cherry, red, 7.85 carat red Spinel that was mined in Luc Yen Vietnam. It’s a very beautiful Gemstone that reminds me of a blood red ruby. It is ...
Category

21st Century and Contemporary Vietnamese Loose Gemstones

Materials

Spinel

2.05 Carat Natural Ruby Fancy Carving Loose Gemstone
Located in Hong Kong, HK
Natural Red Ruby Fancy Carving Fancy Gemstone. 2.05 Carat with a elegant Red color and excellent clarity. Also has an excellent fancy carving with ideal polish to show great shine an...
Category

21st Century and Contemporary Hong Kong Art Deco Loose Gemstones

Materials

Ruby

GIA Certified 2.60 Carats Heated Blue Sapphire
Located in Los Angeles, CA
Blue Sapphires are creating a stir in the market, and this heart shaped gem has been cut to perfection. Displaying its natural characteristics, this gem has both a deep, vibrant, blu...
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Blue Sapphire

Natural Peridot from Pakistan 4.82 Carats Peridot Stone Peridot for Jewellery
Located in Bangkok, TH
Natural Peridot from Pakistan of 4.82 carats from Pakistan has a wonderful cut in a rectangular shape, incredible Green color. Great brilliance. This gem is totally SI Clarity. Product Information: GEMSTONE TYPE Natural Peridot from Pakistan WEIGHT 4.82 carats DIMENSIONS 9.65x8.30x7.8 mm CLARITY SI SHAPE Rectangular CUT Emerald Cut ORIGIN Pakistan TREATMENT None CERTIFICATE Available Natural Peridot From Pakistan 5.43 Carats Peridot Stone Peridot For Jewellery Peridot Necklace Peridot Bracelet Peridot Rings Peridot Pakistan Peridot...
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

1.51 Carat Cushion Shape White Sapphire GIA Certified Unheated
Located in San Francisco, CA
This Cushion shape 1.51-carat Natural Unheated Sri-Lankan White sapphire GIA certificate number:5202625543 has been hand-selected by our experts for...
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire

7.75 Carats Natural LoosePurple Amethyst Ring Gem Round Shape Brazil Mine
Located in Peshawar, PK
Facet Amethyst Weight: 7.75 Carats Dimension: 13.3x13.1x8.9 Mm Origin: Brazil Color: Purple Shape: Round Treatment: Non Certificate; On Customer Demand Amethyst, a gemstone of ca...
Category

21st Century and Contemporary Brazilian Anglo-Indian Loose Gemstones

Materials

Amethyst

Natural Green Zircon Gemstone 1.50 Carat Ceylon Origin
Located in Makola, LK
Natural Green Zircon 1.50 Carats unheated come with a rich Green color and luster and perfect cut, unheated • Variety: Zircon • Origin: Sri Lanka (Ceylon) • Color(s): Green • Shape...
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Zircon

6.47Ct Non Oil Untreated Natural Emerald Gemstone
Located in Sheridan, WY
Introducing the beauty of our Natural Untreated 6.47ct Natural Emerald Loose Gemstone. This exquisite emerald is a true gem of nature, with lush green hues and a radiant cut that p...
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

GIA Certified 2.32 Carats "Pigeon's Blood" Burma Ruby
Located in Los Angeles, CA
Identification: Natural "Pigeon's Blood" Burma Ruby 2.32 carats with GIA Report Carat: 2.32 carats Shape: Oval Measurements: 8.17 x 6.29 x 4.76 mm Cut: Brilliant/Step Color: Pigeon...
Category

21st Century and Contemporary Burmese Loose Gemstones

Materials

Ruby

72.20 Carats Top Quality Rubellite Tourmaline Fancy Pair Shield Natural Gems
Located in Jaipur, RJ
This is a one of a kind pair of rubellite tourmaline. Gemstone - Rubellite Tourmaline Weight - 72.20 Ct Size - 41x17x7.5 MM Piece - 2
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Rubelite

16.41 Carats Burmese Blue Sapphire No Heat Round cabochon Natural sapphire gem
Located in Jaipur, RJ
Burmese Blue Sapphire Round for Fine Jewellery Gemstone: Blue Sapphire No Heat Type : Burmese Shape: cabochon Carat weight: 16.41 Size - 10 To 12
Category

2010s Burmese Loose Gemstones

Materials

Blue Sapphire

3.53 carats Zambian Emerald Octagon Cut stone for fine Jewelry Natural Gemstone
Located in Jaipur, RJ
Zambian Emerald Octagon Cut stone for fine Jewelry Natural Gemstone Weight: 3.53 Carats Size: 11x7x5.5 MM Pieces: 1 Shape: Octagon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

4.81 carats Zambian Emerald Oval Cut stone for fine Jewelry Natural Gemstone
Located in Jaipur, RJ
Zambian Emerald Oval Cut stone for fine Jewelry Natural Gemstone Weight: 4.81 Carats Size: 11.5x9.5x7 MM Pieces: 1 Shape: Oval MINOR OIL ONLY
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

4.50 Carat Vietnam Spinel Round Cut Stone for Fine Jewellery Natural Gemstone
Located in Jaipur, RJ
4.50 Carat Vietnam Spinel Round Cut stone for Fine Jewellery 1 Piece Weight - 4.50 Ct Size - 7x10 mm Shape - Round
Category

2010s Vietnamese Loose Gemstones

Materials

Spinel

Certified 3.28 Cts vivid red Burmese spinel cutstone natural gem quality spinel
Located in Jaipur, RJ
Burmese no heat red spinel cushion Rare color and quality Can be easily set into a beautiful ring ! Clarity VS Weight: 3.28 Carats Size: 9.99x6.94x5.01 MM Pieces: 1 Shape: Faceted cu...
Category

2010s Burmese Modern Loose Gemstones

Materials

Spinel

Small 1.05 Carats Natural Loose Purplish Pink Rhodolite Garnet Heart Shape
Located in Peshawar, PK
Loose Rhodolite Garneg Weight: 1.05 Carats Dimension: 6.4x6.9x3.6 Mm Origin: Tanzania Shape: Heart Treatment: Non Rhodolite garnet, a gem of exceptional beauty and versatility, is ...
Category

2010s Tanzanian Aesthetic Movement Loose Gemstones

Materials

Garnet, Rhodolite

Tanzanite Ring Stone 56 Carat Cushion Loose Gemstone
Located in Beverly Hills, CA
Exceptional and coveted 56.77 carat Tanzanite square cushion loose gemstone, offered unmounted to a fine gem connoisseur. Dimensions: 22.76 x 22.76 x 14.65 mm. This unique gemstone ...
Category

21st Century and Contemporary Tanzanian Contemporary Loose Gemstones

Materials

Tanzanite

113.35 Carat Burmese Tourmaline Tumbled Plain for Fine Jewelry Natural Gem
Located in Jaipur, RJ
Gemstone - Tourmaline Weight - 113.35 Ct Size - 34x24x17 mm Shape - Tumble
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

Lustrous Vivid Green Zambian Emerald Carved Leaf Loose Gemstone for Jewelry
Located in Jaipur, RJ
Zambian Emerald Carved Leaf Cabochon Loose Gemstone for Jewelry Weight: 6.50 Carats Size: 18x11x6 MM Pieces: 1 Shape: Carved Leaf Cabochan Buy with confidence from a company based...
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

3.60 Carats Natural Loose Green Emerald Oval Shape From Zambia Mine
Located in Peshawar, PK
Loose Emerald Weight: 3.60 Carats Dimension: 11.1 X 8.9 X 5.8 Mm Origin: Zambia 🇿🇲 Color; Green Shape: Oval Treatment: Non Certificate: On Customer Demand Zambia is renowned fo...
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

Natural Vivid Blue Aquamarine Carved Pair Rare Size Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 147.25 Carats Size: 21x34 MM Pieces: 2
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Aquamarine, Other

Aquamarine Ring Gem 4.08 Carat Emerald Cut
Located in Beverly Hills, CA
Collection quality, classic 4.08 carat Emerald-Cut Aquamarine unmounted gem, offered loose to a sophisticated gemstone connoisseur. Dimensions: 12.3 x 9...
Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Aquamarine, Beryl

Pink Tourmaline Ring Gem 5.83 Carat Unmounted Square Emerald Cut Loose Gemstone
Located in Beverly Hills, CA
5.83 carat Pink Tourmaline square emerald-cut loose gemstone, offered unmounted to a very special lady. Dimensions: 11 x 10.9 mm. Returns are accepted and paid by us within 7 days of...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Mint Green Tourmaline Ring Gem 3.46 Carat Unmounted Cushion Loose Gemstone
Located in Beverly Hills, CA
Vibrant 3.46 carat Mint Green Tourmaline cushion loose gemstone, offered unmounted to someone very special. Dimensions: 10.3 x 7.8 mm. Returns are accepted and paid by us within 7 da...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Natural Light Blue Aquamarine 3.43ct Fancy Cushion Cut Loose Gem
Located in Birmingham, GB
Natural Light Blue Aquamarine 3.43ct Fancy Cushion Cut Loose Gem 9 x 8mm Natural Light Blue Aquamarine Gemstone. 3.43 Carat with a beautiful light ...
Category

21st Century and Contemporary Loose Gemstones

Unheated Light Violet Sapphire Ring Gem 3.41 Carat Oval Loose Gemstone
Located in Beverly Hills, CA
Special 3.41 carat, no-heat, "metallic" light violet Sapphire oval gem, offered unmounted to a fine gemstone collector. The CDC gem certificate is attached to the image selection for your reference. Returns are accepted and paid by us within 7 days of delivery. We offer supreme custom jewelry work upon request. Please contact us for more details. For your convenience we carry an extensive world-class, unset...
Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Sapphire, Blue Sapphire, Purple Sapphire

Aquamarine Ring Earrings Loose Gemstone Set 20.90 Carat Trillions
Located in Beverly Hills, CA
Very impressive 20.90 carat trillion Aquamarine gem set, offered unmounted to an avid gemstone collector. This is a superb set for a ring and matc...
Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Beryl, Aquamarine

Certified Unheated Blue Sapphire Ring Gem 1.25 Carat Oval Gemstone Ceylon Origin
Located in Makola, LK
Ceylon Unheated Blue Sapphire 1.25 Carats. • Variety: Sapphire • Origin: Sri Lanka (Ceylon) • Color(s): Blue • Shape/Cutting Style: Oval • Dimensions: 8.3mm x 6.1mm x 5.2mm • Calib...
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Sapphire, Blue Sapphire, Purple Sapphire

GIA Certified 5.53 Carats Heated Orange Sapphire
Located in Los Angeles, CA
The gem’s vibrant golden yellow will bring an entire jewelry piece to life. Here is a orange sapphire that weighs 5.53 carats and will be the ray of sunshine she needs. Easily paired...
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire

18 Carat Natural Fire Opal Pear, Fancy Opal, October Birthstone, Orange Gemstone
Located in New York, NY
DETAILS Fire Opal Weight: 18.19 CT Measurements: 23.4 x 18.1 mm Shape: Pear Color: Intense Orange Hardness: 5.5 - 6.5 Birthstone Month: October Natural SHIPPING All items will be sh...
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Opal, Fire Opal

0.98 Carat Natural Ocean Blue Zircon
Located in Hua Hin, TH
Sparkling Cushion cut Ocean Blue Zircon This 0.98 carat Blue Zircon has an impressive fire and a vivid pure blue color. Giving it the "Ocean Blue" distinction. Dimension: 5.12 x 4....
Category

2010s Cambodian Loose Gemstones

Materials

Zircon, Blue Zircon

2.05 carats Red Burmese Loose Spinel Stone Step Cushion Cut Natural Gemstone
Located in Bangkok, TH
2.05 carats 7.48x6.69x4.90 mm Treatment None Clarity VVS Origin Burma Shape Cushion Cut Step Cushion The exquisite beauty of a 2.05-carat Red Burmese Spinel is captured in its me...
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Rere clean Hauyne 0.27ct with GIT certificate deep blue natural no treatmen
Located in bangkok, TH
Name: Hauyne Weight: 0.27ct Size: On certificate Origin: Afghanistan Color: deep blue Clarity: eye clean Cut : standard cut no defect Certificate: GIT ( Thai National Official La...
Category

2010s Loose Gemstones

Materials

Other

Mint Green Tourmaline Ring Gem 5.46 Carat Oval Loose Gemstone
Located in Beverly Hills, CA
Pastel Mint Green Tourmaline oval gem, weighing a total of 5.46 carats, offered loose to a world-class gemstone lover. Returns are accepted and paid by us within 7 days of delivery. ...
Category

21st Century and Contemporary Unknown Modern Loose Gemstones

Materials

Tourmaline

Rare Green Natural Peridot Loose Gemstone, 2.30 Ct Cushion Cut Ideal for Ring
Located in Peshawar, PK
GEMSTONE TYPE: Peridot PIECE(S): 1 WEIGHT: 2.30 Carats SHAPE: Cushion SIZE (MM): 8.30 x 6.80 x 4.78 COLOR: Green CLARITY: Eye Clean TREATMENT: None ORIGIN: Pakistan CERTIFICATE: On...
Category

21st Century and Contemporary Pakistani Contemporary Loose Gemstones

Materials

Peridot

6.18 Carats Pink Kunzite Oval Natural Cut Stone For Fine Gem Jewellery
Located in Jaipur, RJ
This piece is in a sweet bright pink, the unique cutting style, can be an interesting material for eye-catching jewelry 6.18 Carats Pink Kunzite Oval Natural Cut Stone For Fine Gem J...
Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Kunzite

Natural Beautiful 15.41 Carat Rubelite Cabochon Round Cut Loose Gemstone
Located in Hong Kong, HK
Natural Rubellite Cabochon Round Cut Gemstone. 15.41 Carat with a elegant Red color and excellent clarity. Also has an excellent fancy Round cut with ideal polish to show great shine...
Category

21st Century and Contemporary Hong Kong Modern Loose Gemstones

Materials

Rubelite

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

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

4.60 Carat Royal Blue Ceylon Sapphire
Located in Bangkok, TH
A 4.60 Carat Sapphire, resplendent in a royal blue hue. It hails from the enchanting gem mines of Sri Lanka. This exquisite gem has undergone standard heat treatment only, maintainin...
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire

Certified 2.35 ct Natural Unheated White Sapphire Gemstone Ceylon Origin
Located in Makola, LK
A Natural Unheated White Sapphire with a dominant hue of colorless. Cut into an Oveal shape, this stone weighs almost 2.35 carats. • Variety: ...
Category

21st Century and Contemporary Loose Gemstones

Materials

Sapphire, Agate, Diamond, White Diamond

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.

Recently Viewed

View All