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Loose Gemstones For Sale
1.65 Carats Emerald Stone Emerald Cut Natural Gemstone From Afghanistan
Located in Bangkok, TH
Weight 1.65 carats Dimensions 12.1x4.65x3.90 mm Treatment none Origin Afghanistan Clarity included Shape octagon Cut emerald This stunning 1.65 carat emerald stone, meticulo...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

2.05 Carats Mint Green Loose Tourmaline Stone Cushion Cut Afghan Gemstone
Located in Bangkok, TH
Weight 2.05 carats Dimensions 8.6x7.1x5.0 mm Treatment none Origin Afghanistan Clarity eye clean Shape cushion Cut fancy cushion The 2.05 carat Mint Green Tourmaline stone, ...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

1.40 Carats Light Blue Aquamarine Cushion Cut Natural Pakistani Gemstone
Located in Bangkok, TH
Weight 1.40 carats Dimensions 8.35x5.72x4.20 mm Treatment none Origin Pakistan Clarity SI Shape cushion Cut fancy cushion This beautiful 1.40 carats Light Blue Aquamarine gem...
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

0.94 Ct Blue Sapphire Round Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification c...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

2.00-CARAT, FANCY BROWNISH YELLOW -, Pear, SI1-CLARITY, GIA , SKU-7476
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Pear ➛ Colour Grade: Fancy Brownish Yellow ➛ Carat: 2.00 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF THE DIAMOND^...
Category

2010s Asian Loose Gemstones

Materials

Diamond

1.02 - CARAT , VERY LIGHT PINK - , Radiant, VVS2-CLARITY , GIA , SKU - 7425
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Radiant ➛ Colour Grade: Very Light Pink ➛ Carat: 1.02 ➛ Clarity: VVS2 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ ...
Category

2010s Asian Loose Gemstones

Materials

Diamond

1.82Ct Natural Loose Emerald Radiant Shape 3 Pcs
Located in רמת גן, IL
Exquisite 1.82ct Loose Radiant Shape Emerald Gemstone Product Description: Discover the allure of refined elegance with our 1.82ct loose Radiant Shape Emerald gemstone. With its me...
Category

2010s Colombian Modern Loose Gemstones

Materials

Emerald

3.10 Ct Emerald Octagon Cut Loose Gemstone
Located in Fort Lee, NJ
With a vibrant green color hue, the birthstone for May is a symbol of renewed spring growth. All our gemstones are natural & genuine. Certification can be provided on request at a ...
Category

2010s Zambian Loose Gemstones

Materials

Emerald

0.53 - CARAT , FANCY PURLPLISH PINK - Cushion , SI2 , GIA , SKU - 7424
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Pear ➛ Colour Grade: Fancy Yellow ➛ Carat: 0.71 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ ...
Category

2010s Asian Loose Gemstones

Materials

Diamond

1.02-CARAT, FANCY YELLOW GREEN, Radiant, SI2-CLARITY, GIA , SKU-7549
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Radiant ➛ Colour Grade: Fancy Yellow Green ➛ Carat: 1.02 ➛ Clarity: SI2 ➛ GIA Certified ^FEATURES OF THE DIAMOND^...
Category

2010s Asian Loose Gemstones

Materials

Diamond

0.71-CARAT, FANCY YELLOW -, Pear, SI1-CLARITY, GIA , SKU-7372
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Pear ➛ Colour Grade: Fancy Yellow ➛ Carat: 0.71 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ ...
Category

2010s Asian Loose Gemstones

Materials

Diamond

1.54 Ct Blue Sapphire Cushion Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

GIA Certified Brazil Natural Rare & Gorgeous Blue-Green Natural Paraiba 0.38 Cts
Located in บางรัก, TH
ITEM DESCRIPTION:  Gem type : Natural Paraiba Tourmaline Origin: Brazil Treatment: Natural Color: Blue-Green shape: Oval Size: 0.38 Carats Paraíba tourmaline is one of the most cov...
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline, Paraiba

0.85 Carats Loose Pink Tourmaline Stone Round Cut Natural Afghani Gemstone
Located in Bangkok, TH
Weight 0.85 carats Dimensions 6.1x6.1x3.9 mm Treatment none Origin Afghanistan Clarity eye clean Shape round Cut round brilliant This captivating 0.85 carat Pink Tourmaline ...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

GIA Certified 1.29 Carat Old European Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC57911 Stone Shape: Old European Diamond Weight: 1.29Carat Fancy Color: M Cut: Brilliant Measurements: 6.58 x 6.88 x 4.56 mm Symmetry: Fair Polish: Good Flu...
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

2.22 Ct Blue Sapphire Oval Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

3.40 Carat Natural Loose Blueish Green Tourmaline Emerald Shape Gem Earth Mine
Located in Peshawar, PK
Loose Mint Green Tourmaline Weight: 3.40 Carats Dimension: 10.3 x 7.3 x 5.6 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

0.85 Carats Deep Blue Loose Sapphire Stone Oval Cut Madagascar's Gemstone
Located in Bangkok, TH
Weight 0.85 carats Dimensions 6.87x4.82x2.70 mm Treatment Heated Clarity VVS Origin Madagascar Shape oval Cut oval This exquisite 0.85 carat deep blue sapphire stone boasts a...
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Sapphire

1.75 Carats Gray Loose Burmese Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
Weight 1.75 carats Dimensions 7.5x6.9x4.1 mm Treatment none Origin Burma Clarity SI Shape cushion Cut cushion This stunning 1.75 carats Gray Burmese Spinel Stone is a natura...
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Natural Deep Yellow Citrine Stone 8.60 Carats Citrine Gemstone Citrine for Ring
Located in Bangkok, TH
Natural Deep Yellow Citrine Stone, available for sale, natural high-quality, Flawless Loupe Clean Clarity, 8.60 carats certified citrine gemstone from B...
Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Citrine

Rare Deep Green Natural Tourmaline Loose Gemstone, 3.75 Ct Emerald Cut for Ring
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 3.75 Carats SHAPE: Emerald SIZE (MM): 11.25 x 6.93 x 5.39 COLOR: Deep Green CLARITY: Eye Clean TREATMENT: None ORIGIN: Afghanistan 🇦�...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

2.30 Carats Rare Triplite Stone Emerald Cut Natural Pakistani Gemstone
Located in Bangkok, TH
Weight 2.30 carats Dimensions 8.1x6.6x4.2 mm Treatment none Origin Pakistan Clarity SI Shape octagon Cut emerald Presenting an exceptional 2.30 carats Rare Triplite Stone, me...
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Other

2.61 Ct Blue Sapphire Octagon Cut Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

5.07 Ct Blue Sapphire Oval Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

2.48 Ct Blue Sapphire Cushion Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

6.39ct Baguette Cut Natural UNHEATED Citrine Gemstone
Located in Sheridan, WY
Dazzle and shine with our 6.39ct Baguette Cut Natural UNHEATED Citrine, a gemstone that radiates sophistication and elegance. Measuring 17.4mm in length and 7.3mm in width, this citr...
Category

2010s African Artisan Loose Gemstones

Materials

Citrine

2.75 Carat Natural Loose Blue Green Tourmaline Cushion Shape Gem From Earth Mine
Located in Peshawar, PK
Loose Blue Green Tourmaline Weight: 2.75 Carats Dimension: 7.3 x 7.3 x 6.8 Mm Colour: Blue 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

Afghanistan(Panjshir) 1.13 Ct Vivid Green Premium Grade Emerald Guild Certified
Located in บางรัก, TH
ITEM DESCRIPTION:  Gem type : Natural Emerald Origin: Afghanistan (Panjshir) Treatment: Minor Oil Color: Viivd Green shape: Octagon Size:  1.13 Carats Emeralds from the Panjshir ...
Category

21st Century and Contemporary Loose Gemstones

Materials

Emerald

2.95 Ct Blue Sapphire Cushion Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

2.60 Ct Blue Sapphire Octagon Cut Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

4.07 Ct Emerald Octagon Cut Loose Gemstone
Located in Fort Lee, NJ
With a vibrant green color hue, the birthstone for May is a symbol of renewed spring growth. All our gemstones are natural & genuine. Certification can be provided on request at a ...
Category

2010s Zambian Loose Gemstones

Materials

Emerald

4.54 Ct Blue Sapphire Cushion Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

13.25 Carat Natural Loose Golden Topaz Pear Shape Gem For Necklace Making
Located in Peshawar, PK
Loose Topaz Weight: 13.25 Carats Dimension: 15.3 x 14.2 x 10 Mm Origin: Skardu, Pakistan Shape: Pear 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

6.50 Carat Natural Loose Tourmaline Set Multi Shape Gem For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline Set Weight: 6.50 Carats Size: 1.45 to 1.80 Carat Colour: Multi Colour Origin: Afghanistan Certificate: On Demand Treatment: Non Tourmaline is a captivating gems...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.10 Ct Blue Sapphire Round Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

GRS Certified 1.00 Ct Natural Unheated Premium Grade Red Ruby (Ideal for a ring)
Located in บางรัก, TH
ITEM DESCRIPTION:  Gem type : Natural Ruby Origin: Mozambique Treatment: No Treatment Color: Red shape: Cushion Size:  1.00 Carats Mozambique unheated rubies that are GRS (GemRes...
Category

21st Century and Contemporary Loose Gemstones

Materials

Ruby

11.95 Ct Emerald Oval Loose Gemstone
Located in Fort Lee, NJ
With a vibrant green color hue, the birthstone for May is a symbol of renewed spring growth. All our gemstones are natural & genuine. Certification can be provided on request at a ...
Category

2010s Zambian Loose Gemstones

Materials

Emerald

3.92 Ct Blue Sapphire Pear Loose Gemstone
Located in Fort Lee, NJ
A highly precious September birthstone with a delighting blue color. They are believed to bring good luck & fortune to life. All our gemstones are natural & genuine. Certification ca...
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

3.59 Ct Ruby Oval Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. All our gemstones are natural & genuine. Certification can be provided on request at a nom...
Category

2010s Malagasy Loose Gemstones

Materials

Ruby

5.96 Ct Emerald Oval Loose Gemstone
Located in Fort Lee, NJ
With a vibrant green color hue, the birthstone for May is a symbol of renewed spring growth. All our gemstones are natural & genuine. Certification can be provided on request at a ...
Category

2010s Zambian Loose Gemstones

Materials

Emerald

3.85ct Brilliant Cut Natural UNHEATED Citrine Gemstone
Located in Sheridan, WY
Embrace the captivating allure of our 3.85ct Brilliant Cut Natural UNHEATED Citrine Gemstone. With its precise dimensions of 10.2mm in length and 8.2mm in width, this gemstone is a p...
Category

2010s African Artisan Loose Gemstones

Materials

Citrine

2.06 carat Heart Shaped Natural Yellow Diamond
Located in New York, NY
This exquisite 2.06 carat heart-shaped natural yellow diamond is a stunning example of nature's beauty. Expertly cut to perfection, it boasts exceptional clarity and a radiant yellow...
Category

2010s Indian Loose Gemstones

Materials

Yellow Diamond

5.89ct Brilliant Cut UNHEATED Natural Citrine Gemstone
Located in Sheridan, WY
Discover the enchanting beauty of our 5.89ct Brilliant Cut Natural UNHEATED Citrine gemstone. With a dimension of 11.4mm, this gemstone is a true treasure, offering a rich, honeyed h...
Category

2010s African Artisan Loose Gemstones

Materials

Citrine

1.70 Carats Emerald Stone Emerald Cut Natural Gemstone From Afghanistan
Located in Bangkok, TH
Weight 1.70 carats Dimensions 12.8x4.22x3.70 mm Treatment none Origin Afghanistan Clarity included Shape octagon Cut emerald This stunning 1.70 carat emerald stone, meticulo...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

4.80 Carat Natural Loose Spessartine Garnet Emerald Shape Gem For Jewellery
Located in Peshawar, PK
Loose Spessartine Garnet Weight: 4.80 Carats Dimension: 11 x 8.7 x 5.8 Mm Colour: Orange Treatment: Non Shape: Emerald Certificate: On Demand Spessartine garnet, often referred to...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Mandarin Garnet

1.80 , FANCY LIGHT BROWNISH GREENISH YELLOW - , Cushion, SI1 , GIA , 7758
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Cushion ➛ Colour Grade: Fancy Brownish Greenish Yellow ➛ Carat: 1.80 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF ...
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIT Certified 4.37ct Oval Olive Green Tourmaline, Eye Clean, 11.13x9.12x6.59 mm
Located in เกาะสมุย, TH
Tourmaline lovers please do not miss: This tourmaline is of yellowish- green color or can be called olive green. The cut is well proportioned allowing high brilliance and brightness....
Category

20th Century African Loose Gemstones

Materials

Tourmaline

1.11-CARAT, FANCY YELLOW GREEN, Radiant, SI2-CLARITY, GIA , SKU-7550
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Radiant ➛ Colour Grade: Fancy Yellow Green ➛ Carat: 1.11 ➛ Clarity: SI2 ➛ GIA Certified ^FEATURES OF THE DIAMOND...
Category

2010s Asian Loose Gemstones

Materials

Diamond

2 Carat GIA Certified Fancy Deep Brown-Pink VS2 Pear Shape Diamond
Located in New York, NY
2.22 Carat Fancy Deep Brown-Pink Pear Shape Diamond VS2 Clarity Very Good, Good Cutting No Fluorescence No fluorescence GIA Certified Diamond This piece can be viewed before purc...
Category

2010s Loose Gemstones

Materials

Pink Diamond, Diamond

22.20 Carat Natural Loose Golden Topaz Huge Cushion Shape Gem For Jewellery
Located in Peshawar, PK
Loose Topaz Weight: 22.20 Carats Dimension: 16.3 x 14.9 x 11.1 Mm Origin: Skardu, Pakistan Shape: Cushion Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radi...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

1.02-CARAT, FAINT PINK -, Pear, SI1-CLARITY, GIA , SKU-7804
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Pear ➛ Colour Grade: Faint Pink ➛ Carat: 1.02 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ ...
Category

2010s Asian Loose Gemstones

Materials

Diamond, Pink Diamond

5.85 Carat Natural Loose Ametrine Oval Shape Gem From Brazil Mine
Located in Peshawar, PK
Faceted Ametrine Weight: 5.85 Carats Dimension; 13.9 x 9.2 x 7.2 Mm Origin: Brazil Color: Purple & Yellow Shape: Oval Treatment: Non Certficate: On Demand . Ametrine is a unique and...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

1.02-CARAT, FANCY LIGHT GRAY GREEN, Cushion, I1-CLARITY, GIA , SKU-7760
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Cushion ➛ Colour Grade: Fancy Light Gray Green ➛ Carat: 1.02 ➛ Clarity: I1 ➛ GIA Certified ^FEATURES OF THE DIAMO...
Category

2010s Asian Loose Gemstones

Materials

Diamond

0.50-CARAT, FAINT PINKISH BROWN -, Round, SI1-CLARITY, GIA , SKU-7795
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Radiant ➛ Colour Grade: Fancy Brown Pink ➛ Carat: 0.50 ➛ Clarity: I2 ➛ GIA Certified ^FEATURES OF THE DIAMOND^ ...
Category

2010s Asian Loose Gemstones

Materials

Diamond

Sparkling 3.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified
Located in רמת גן, IL
Sparkling 3.01ct Ideal Cut Cushion-Shaped Diamond - GIA Certified Presenting a breathtaking 3.0-carat cushion-cut diamond that combines luxury with a touch of classic elegance. Cer...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

0.50-CARAT, FAINT PINKISH BROWN -, Round, SI1-CLARITY, GIA , SKU-7796
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Round ➛ Colour Grade: Faint Pinkish Brown ➛ Carat: 0.50 ➛ Clarity: SI1 ➛ GIA Certified ^FEATURES OF THE DIAMOND...
Category

2010s Asian Loose Gemstones

Materials

Diamond, 15k Gold

0.50-CARAT, FAINT PINKISH BROWN -, Heart, SI2-CLARITY, GIA , SKU-7798
Located in Kowloon, HK
*100% NATURAL FANCY COLOUR DIAMOND* ✪ Diamond Details ✪ ➛ Shape: Heart ➛ Colour Grade: Faint Pinkish Brown ➛ Carat: 0.50 ➛ Clarity: SI2 ➛ GIA Certified ^FEATURES OF THE DIAMOND^...
Category

2010s Asian Loose Gemstones

Materials

Diamond

2.10 Carat Natural Loose Rhodolite Garnet Trillion Shape Gem For Ring
Located in Peshawar, PK
Loose Rhodolite Garnet Weight: 2.10 Carats Dimension: 7.4 x 9 x 4.6 Mm Colour: Red Origin: Africa Treatment: Non Shape : Trillion Rhodolite garnet, a gemstone celebrated for its en...
Category

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

Materials

Garnet, Rhodolite

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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