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Loose Gemstones For Sale
Shining 1.45ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Shining 1.45ct Ideal Cut Pair of Diamonds - GIA Certified Discover a radiant pair of cushion-cut diamonds, totaling 1.45-carat, perfect for custom jewelry pieces. Certified by GIA, ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Sparkling 2.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Sparkling 2.02ct Ideal Cut Pair of Diamonds - GIA Certified Discover an exquisite pair of round diamonds, totaling 2.02-carat, ideal for custom jewelry designs. Certified by GIA, en...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Precious 1.82ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Precious 1.82ct Ideal Cut Pair of Diamonds - GIA Certified Experience the elegance of this exquisite pair of cut-cornered rectangular diamonds, totaling 1.82-carat. Certified by the...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1.80 Carats Pinkish Red Loose Garnet Stone Oval Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.80 carats Dimensions 8.3x7.3x4.3 mm Treatment none Origin Tanzania Clarity VVS Shape oval Cut custom precision The Pinkish Red Garnet Stone is a radiant gem of exqu...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Garnet

Sparkling 3.78 Carat Blue Zircon Gemstone Pear 8x7mm
Located in Columbus, OH
A gorgeous pear shape blue zircon looking for it's next home. If you feel a sparkle of excitement seeing this gem and want to design a one of a kind piece of jewelry, let us know! ...
Category

21st Century and Contemporary American Loose Gemstones

Materials

Zircon, Blue Zircon

2.0ct Round Teal NATURAL Unheated SAPPHIRE Gemstone
Located in Sheridan, WY
Embrace the allure of the ocean with our 2.0ct Round Teal Natural Unheated Sapphire Gemstone. This stunning gemstone boasts a unique teal hue that evokes the mystery and charm of the...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

Dazzling 1.81ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Dazzling 1.81ct Ideal Cut Pair of Diamonds - GIA Certified Experience the beauty of this delightful pair of oval diamonds, totaling 1.81-carat. These diamonds offer a near-colorles...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1ct Round Teal Blue Natural Untreated Sapphire Gemstone
Located in Sheridan, WY
Discover the timeless beauty of this 1-carat Round Teal Blue Natural Untreated Sapphire Gemstone. Its classic round cut radiates with a symphony of light, enhancing the stone’s deep ...
Category

2010s African Artisan Loose Gemstones

Materials

Sapphire, Blue Sapphire

3.65ct NON-OILED Rectangular Natural EMERALD Gemstone
Located in Sheridan, WY
Discover the pure elegance of our 3.65ct Non-oiled Rectangle Cut Natural Emerald Gemstone. This exceptional gemstone radiates a deep, lush green, reminiscent of the richest foliage. ...
Category

2010s African Artisan Loose Gemstones

Materials

Emerald

5.70 Carat Natural Loose Aquamarine Square Shape Gem For Ring Jewellery
Located in Peshawar, PK
Loose Aquamarine Weight: 5.70 Carat Dimension: 10.1 x 10 x 8.2 Mm Colour : Pale Blue Origin: Shigar Valley, Pakistan Treatment: Non Certificate : On Demand Shape: Square Aquamarine...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

13.4 Carat Tanzania Zircon Natural Oval & Cushion Cutstone Fine Jewelry Gemstone
Located in Jaipur, RJ
13.4 Carat Tanzania Zircon Natural Oval & Cushion Cut stone Fine Jewelry Gemstone Weight - 13.40 Carats Size - 8x8 To 8x10 mm Shape - Oval & Cushion Quantity - 4 Pieces
Category

2010s Tanzanian Loose Gemstones

Materials

Zircon

Rare Neon Blue Natural Tourmaline Gemstone, 4 Ct Emerald Cut for Ring/Jewelry AF
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 1 WEIGHT: 4.00 Carats SHAPE: Emerald Cut SIZE (MM): 13.82 x 6.72 x 5.07 COLOR: Neon Electric Blue CLARITY: Slightly Included TREATMENT: None ORIGI...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

11.47 carats nigeria green tourmaline Top Quality baguette Cut stone natural Gem
Located in Jaipur, RJ
11.47 carats Nigeria green tourmaline Top Quality baguette Cut stone natural Gem Gemstone - Tourmaline Weight- 11.47 Carats Shape - baguette Size - 20x10x6 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

9.52 carats Nigeria green tourmaline Top Quality cushion Cut stone natural Gem
Located in Jaipur, RJ
9.52 carats Nigeria green tourmaline Top Quality cushion Cut stone natural Gem Gemstone - Tourmaline Weight- 9.52 Carats Shape - cushion Size - 15x11x7 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

Luxurious 4.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Luxurious 4.02ct Ideal Cut Pair of Diamonds - GIA Certified Indulge in luxury with this stunning pair of square-cut diamonds, totaling 4.02-carat. Certified by GI, these diamonds re...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Radiant 3.01ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Radiant 3.01ct Ideal Cut Pair of Diamonds - GIA Certified Elevate your jewelry collection with this stunning pair of round diamonds, boasting a combined weight of 3.01-carat. Certif...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Pristine 4.02ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Pristine 4.02ct Ideal Cut Pair of Diamonds - GIA Certified Discover elegance with this captivating pair of emerald-cut diamonds, weighing 4.02-carat. Comes with GIA certifications,...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

7.52 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem
Located in Jaipur, RJ
7.52 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem Gemstone - Tourmaline Weight- 7.52 Carats Shape - Octagon Size - 12x9.5x7.5 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

Exquisite 3.03ct Ideal Cut Pair of Diamonds - GIA Certified
Located in רמת גן, IL
Exquisite 3.03ct Ideal Cut Pair of Diamonds - GIA Certified Experience the allure of elegance with this exquisite pair of emerald-cut diamonds, offering a combined weight of 3.03-c...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1.45 Carats Pinkish Red Loose Garnet Stone Oval Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.45 carats Dimensions 8.25x6.60x3.70 mm Treatment none Origin Tanzania Clarity VVs Shape oval Cut fancy oval The Pinkish Red Garnet Stone is a radiant gem of exquisit...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Garnet

14.70 Carats Rubellite Tourmaline Octagon Cut Stone For Fine Jewelry Natural gem
Located in Jaipur, RJ
14.70 Carats Rubellite Tourmaline Octagon Cut Stone For Fine Jewelry Natural gem Gemstone - Rubellite Tourmaline Weight - 14.70 carats Size - 16.6x13.7x7 MM Quantity - 1 Piece
Category

21st Century and Contemporary Unknown Contemporary Loose Gemstones

Materials

Rubelite, Tourmaline, 18k Gold

69.74 Carats Burmese Tourmaline Oval Cut Stone for Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
69.74 Carats Burmese Tourmaline Oval Cut Stone for Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 69.74 Ct Size - 28x22x17 mm Shape - Oval Cut Stone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

8.00 Carat Natural Loose Golden Topaz Emerald Shape Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Topaz Weight: 8.00 Carats Dimension: 12.5 x 9.6 x 7.3 Mm Origin: Skardu, Pakistan Shape: Emerald Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radiant...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

76.24 Carats Burmese Tourmaline cabochon plain for Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
76.24 Carats Burmese Tourmaline cabochon plain for Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 76.24 Ct Size - 29x20 mm Shape - cabochon
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

11.86 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem
Located in Jaipur, RJ
11.86 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem Gemstone - Tourmaline Weight- 11.86 Carats Shape - Octagon Size - 14x13x7 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

16.9 Carat Tanzania Zircon Natural Oval & Cushion Cutstone Fine Jewelry Gemstone
Located in Jaipur, RJ
16.9 Carat Tanzania Zircon Natural Oval & Cushion Cut stone Fine Jewelry Gemstone Weight - 16.90 Carats Size - 9x9 To 8x10 mm Shape - Oval & Cushion Quantity - 4 Pieces
Category

2010s Tanzanian Loose Gemstones

Materials

Zircon

15.23 carats nigeria green tourmaline Top Quality Cushion Cut stone natural Gem
Located in Jaipur, RJ
15.23 carats Nigeria green tourmaline Top Quality Cushion Cut stone natural Gem Gemstone - Tourmaline Weight- 15.23 Carats Shape - cushion Size - 16.5x15x8 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

93.06 Carats Green Tourmaline Plain Tumbled Loose Gemstone Fine Jewelry Natural
Located in Jaipur, RJ
93.06 Carats Green Tourmaline Plain Tumbled Loose Gemstone Fine Jewelry Natural Gemstone - Tourmaline Weight - 93.06 Ct Size - 31x25x15 mm Shape - Tumbled
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

14.46 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem
Located in Jaipur, RJ
14.46 carats Nigeria green tourmaline Top Quality Octagon Cut stone natural Gem Gemstone - Tourmaline Weight- 14.46 Carats Shape - Octagon Size - 18x11x7 MM Pieces - 1
Category

21st Century and Contemporary Nigerian Art Deco Loose Gemstones

Materials

Tourmaline

35.90 Carats Tanzania Zircon Natural Octagon Cut stone Fine Jewelry Gemstone
Located in Jaipur, RJ
35.90 Carats Tanzania Zircon Natural Octagon Cut stone Fine Jewelry Gemstone Weight - 35.90 Carats Size - 9x7 mm Shape - Octagon Quantity - 10 Pieces
Category

2010s Tanzanian Loose Gemstones

Materials

Zircon

32.45 Carat Tanzania Zircon Round Faceted Natural Cutstone Fine Jewelry Gemstone
Located in Jaipur, RJ
32.45 Carat Tanzania Zircon Round Faceted Natural Cut stone Fine Jewelry Gemstone Weight - 32.45 Carats Size - 8 To 10 mm Shape - Round Quantity - 8 Pieces
Category

2010s Tanzanian Loose Gemstones

Materials

Zircon

8.51 Carats Fine Green Tourmaline Shield Cutstone Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
8.51 Carats Top Quality Tourmaline Shield Cutstone Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 8.51 Size - 17x13x7 mm Shape - Shield Cut Stone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

33.37 Carats Top Quality Tourmaline Oval Cut Stone Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
33.37 Carats Top Quality Tourmaline Oval Cut Stone Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 33.37 Ct Size - 25x18x11 mm Shape - Oval Cut Stone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

47.94 Carats Top Quality Tourmaline Oval Cut Stone Fine Jewelry Natural Gemstone
Located in Jaipur, RJ
47.94 Carats Top Quality Tourmaline Oval Cut Stone Fine Jewelry Natural Gemstone Gemstone - Tourmaline Weight - 47.94 Ct Size - 27x20x13.6 mm Shape - Oval Cut Stone
Category

2010s Burmese Loose Gemstones

Materials

Tourmaline

Purplish Blue Tanzanite Heart Shaped 1.30 Cts Tanzanite Gemstone from Tanzania
Located in Bangkok, TH
Purplish Blue Tanzanite Heart Shaped of 1.30 Carat from Tanzania has a wonderful cut in a heart shape, incredible blue color. Great brilliance. This ge...
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Tanzanite

1.15 Carats Loose Green Tourmaline Stone Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 1.15 carats Dimensions 6.1x5.7x4.4 mm Treatment none Origin Afghanistan Clarity eye clean Shape octagon Cut emerald The exquisite Green Tourmaline stone, boasting a w...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

2.95 Carat Natural Loose Aquamarine Cushion Shape Gem For Jewellery Making
Located in Peshawar, PK
Loose Aquamarine Weight: 2.95 Carat Dimension: 10 x 7.4 x 5.9 Mm Colour : Pale Blue Origin: Shigar Valley, Pakistan Treatment: Non Certificate : On Demand Shape: Cushion Aquamarine ...
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

4.25 Carats Fine Sea Blue Loose Aquamarine Stone Trilliant Cut Nigerian Gemstone
Located in Bangkok, TH
Weight 4.25 carats Dimensions 11.1x10.8x7.5 mm Treatment none Origin Nigeria Clarity SI Shape triangular Cut Trilliant The 4.25 carats Fine Sea Blue Aquamarine Stone boasts ...
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Aquamarine

Exquisite 1 pc Ideal Cut Natural Diamond w/0.51 ct - GIA Certified
Located in רמת גן, IL
Exquisite 1 pc Ideal Cut Natural Diamond w/0.51 ct - GIA Certified This remarkable 0.51 ct pear-shaped diamond epitomizes both elegance and rarity. This diamond offers a brilliance ...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

GIA Certified Color Changing Cobalt Spinel
Located in Omaha, NE
When it comes to Cobalt Spinel from the Famous Neon Blue Mine of Vietnam everyone knows that to have a faceted Cobalt Spinel over .5ct is extremely rare rare . A color changing cobal...
Category

1970s Vietnamese Vintage Loose Gemstones

Materials

Spinel

Rare Darkish Inky Blue Natural Tourmaline Gemstones Lot, 4.85 Ct for Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Tourmaline PIECE(S): 4 WEIGHT: 4.85 Carats SHAPE: Emerald Cut SIZE (MM): 1.75 Carat: 6.23 x 6.49 x 5.04 1.00 Carat: 4.64 x 5.80 x 4.73 1.40 Carat: 7.52 x 5.22 x 4.17 ...
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Stunning 3.15 Carats Natural Loose Mint Green Tourmaline Emerald Shape
Located in Peshawar, PK
Loose Tourmaline Weight: 3.15 Carats Dimension: 10.2x5.8x5.8 Mm Origin: Kunar Afghanistan Shape: Emerald Color: Mint Green Treatment: Non Certificate: On Demand Mint green tourm...
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

1.55 Carat Faceted Yellowish Blue Sapphire Oval Shape Gem From Madagascar Mine
Located in Peshawar, PK
Loose Sapphire Weight: 1.55 Carats Dimension: 6.7 x 5.6 x 4.5 Mm Colour: Yellow And Blue Origin: Madagascar, Africa Treatment: Heated Certificate: On Demand Shape: Oval Sapphire...
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Sapphire

1.60 Carats Soft Red Loose Garnet Stone Square Cut Natural African Gemstone
Located in Bangkok, TH
Weight 1.60 carats Dimensions 6.4x6.1x4.2 mm Treatment none Origin Africa Clarity eye clean Shape square Cut baguette A stunning piece of natural beauty, this soft red garne...
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

12.30 Carat Natural Loose Citrine Pear Shape Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Citrine Weight: 12.30 Carats Dimension: 17.3 x 13.1 x 10.6 Mm Origin: Brazil Colour: Yellow Treatment: Non Certficate: On Demand Shape: Pear Citrine, a radiant and versatile...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

Luscious Natural 1.71ct Oval Platinum Spinel
Located in Pittsburgh, PA
Experience our beautiful and rare 1.71 carat natural oval-shaped platinum spinel. This gemstone is a reflection of nature's sublime artistry with its flashing purple-blue and gray hu...
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Magnificent 1 pc Ideal Cut Natural Diamond w/2.16ct - IGI Certified
Located in רמת גן, IL
Magnificent 1 pc Ideal Cut Natural Diamond w/2.16ct - IGI Certified Discover unparalleled elegance with this magnificent 2.16-carat natural diamond. Boasts a classic round brilliant...
Category

2010s Israeli Loose Gemstones

Materials

Diamond

6.65 Carat Natural Loose Amethyst Round Shape Gem For Ring Jewellery
Located in Peshawar, PK
Loose Amethyst Weight: 6.65 Carats Dimension: 12.1 x 12.1 x 8.8 Mm Colour: Purple Origin: Brazil Treatment: Non Certificate: On Demand Shape: Round Amethyst, a stunning variety of ...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

2.40 Carats Deep Indicolite Tourmaline Stone Emerald Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 2.40 carats Dimensions 10.8x5.8x4.4 mm Treatment none Origin Afghanistan Clarity SI Shape octagon Cut emerald The Deep Indicolite Tourmaline is a mesmerizing gemstone ...
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline, Indicolite

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

1.65 Carats Purplish Red Tourmaline Pair Asscher Cut Natural Nigerian Gemstone
Located in Bangkok, TH
Weight 1.65 carats Dimensions 5.6x5.6x3.5 mm Treatment none Origin Nigeria Clarity VVS Shape octagon Cut Asscher This stunning pair of Purplish Red Asscher Cut Natural Niger...
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline

2.72ct Colombian Green Emerald Pear-Cut Pair Loose Amazing Clarity and Lustre
Located in Sai Kung District, HK
Stunning natural Colombian emerald pear cut pair. Both emeralds have amazing clarity and lustre, these stones absolutely glow! If set in yellow gold, they would be divine. The eme...
Category

2010s Colombian Loose Gemstones

Materials

Emerald

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

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Emerald

10.00 Carat Natural Loose Ametrine Long Oval Shape Gem For Necklace
Located in Peshawar, PK
Faceted Ametrine Weight: 10.00 Carats Dimension; 16.1 x 11.2 x 8.6 Mm Origin: Brazil Color: Purple & Yellow Shape: Oval Treatment: Non Certficate: On Demand . Ametrine is a unique a...
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Other

3.27ct Colombian Green Emerald Pear-Cut Loose Amazing Colour and Glow
Located in Sai Kung District, HK
Stunning natural pear-cut Colombian emerald. The emerald has and incredible blueish-green colour and a sensational glow and lustre. The emerald would make a beautiful ring or a ...
Category

2010s Colombian Loose Gemstones

Materials

Emerald

5.52ct Round Violet-Blue Tanzanite GIA Certified Tanzania
Located in Toronto, Ontario
This is a stunning GIA Certified Tanzanite The GIA report reads as follows: GIA Report Number: 2239220146 Shape: Round Cutting Style: Cutting Style: Crown: Brilliant Cut Cutting...
Category

2010s Tanzanian Loose Gemstones

Materials

Tanzanite

12.87ct Light Baby Pastel Pink Emerald Cut Kunzite Loose
Located in Sai Kung District, HK
Stunning baby pink emerald cut kunzite entirely eye clean. The kunzite is a hefty 12.87ct, with large measurements of 15.20mm x 11mm x 8.07mm. Stunning baby pink colour. For more ...
Category

2010s Loose Gemstones

Materials

Kunzite

1.30 Carats Green Loose Peridot Stone Asscher Cut Natural Pakistani Gemstone
Located in Bangkok, TH
Weight 1.30 carats Dimensions 6.60x6.45x4.12 mm Treatment none Origin Pakistan Clarity VVS Shape Octagon Cut Asscher Behold the mesmerizing beauty of a 1.30 carat Green Peri...
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

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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