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Loose Stone Asscher

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2.55 Carats Orange Loose Citrine Stone Asscher Cut Natural Brazilian Gemstone
Located in Bangkok, TH
stone captivates with its radiant beauty. Weighing an impressive 2.55 carats, its Asscher cut enhances
Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Citrine

1.30 Carats Green Loose Peridot Stone Asscher Cut Natural Pakistani Gemstone
Located in Bangkok, TH
Octagon Cut Asscher Behold the mesmerizing beauty of a 1.30 carat Green Peridot Stone, expertly
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

2.50 carats Vivid Red Loose Garnet Stone Asscher Cut natural Tanzanian Gemstone
Located in Bangkok, TH
Octagon Cut Asscher Cut The exquisite 2.50-carat Vivid Red Garnet Stone, cut into an Asscher shape
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Garnet

2.75 Carats Vivid Red Loose Garnet Stone Asscher Cut Natural African Gemstone
Located in Bangkok, TH
octagon Cut Asscher Behold the exquisite allure of this 2.75 carat Vivid Red Garnet Stone, fashioned
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

2.05 Carats Pink Loose Garnet Stone Step Asscher Cut Natural African Gemstone
Located in Bangkok, TH
octagon Cut fancy Asscher Crafted with precision and beauty, this exquisite Pink Garnet Stone boasts
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Garnet

6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
Located in Peshawar, PK
Loose Tourmaline Weight: 6.65 Carats Dimension: 10.8x10.3x7.9 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
6.65 Carats Asscher Cut Loose Green Seafoam Tourmaline Ring Gem
Free Shipping
W 0.41 in D 0.32 in L 0.43 in
39.70 Carats Natural Earth Mine Loose Amethyst Asscher Cut Gemstone
Located in Peshawar, PK
Loose Amethyst Weight: 39.70 Carats Dimension: 19.1x19.3x16 Mm Origin: Brazil Shape: Asscher
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

6.25 Carat Natural Loose Blueish Green Tourmaline Asscher Cut Gem
Located in Peshawar, PK
Loose Bright Green Tourmaline Weight: 6.25 Carats Dimension: 10.1 x 10 x 8.5 Mm Colour: Green
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

12.25 Carat loose Blue Topaz Asscher Cut Gem For Necklace Jewellery
Located in Peshawar, PK
Loose Blue Topaz Weight: 12.25 Carats Dimensions: 13 x 12 x 8.9 Mm Origin: Brazil Shape: Asscher
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Blue Topaz

0.91 Carat Precisely Cut Asscher Silver Spinel Solitaire Ring Loose Gemstone
Located in Bangkok, TH
treasured rubies and sapphires were actually spinels, the stone’s affected its public perception. Natural
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Beauteous 1.10 Carats Loose Blueish Green Tourmaline Asscher Cut Ring Gemstone
Located in Peshawar, PK
Loose Tourmaline Weight: 1.10 Carats Dimension: 5.9x5.7x4.5 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Aesthetic Movement Loose Gemstones

Materials

Tourmaline

8.65 Carats Natural Loose Mint Tourmaline Asscher Cut Gemstone Afghanistan Mine
Located in Peshawar, PK
Loose Mint Tourmaline Weight: 8.65 Carats Dimension: 12.2x12.1x8.3 Mm Origin: Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

Gorgeous Mint Green Loose Tourmaline Jewelry Gem 24.20 Carat Asscher Cut
Located in Peshawar, PK
Afghanistan Clarity : Eye Clean Shape: Asscher Cut Color: Mintgreen Certificate: On Demand Basically, mint
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Tourmaline

12.10cts Natural Loose Peach Morganite Gemstone Asscher Cut for Jewelry Making
Located in Peshawar, PK
Clarity : SI Shape: Asscher Cut Color: Peach Certificate: On Demand Morganite is believed to bring
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Morganite

Intense Color 9.55 Carat Loose Electric Blue Topaz Asscher Cut Gemstone
Located in Peshawar, PK
Clarity : Loupe Clean Shape: Square Cut/Facet: Asscher Color: Intense Blue Certificate: On Demand Blue
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Topaz, Blue Topaz

Stunning 19.95 Carat Asscher Cut Natural Loose Golden Topaz from Pakistan
Located in Peshawar, PK
Origin : Skardu Color: Light Golden Shape: Emerald Cut: Asscher Certificate: On Demand Month: November
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz, Imperial Topaz

4.15 Carats Asscher Cut Soft Pink Loose Tourmaline Ring Gem Afghanistan Mine
Located in Peshawar, PK
Loose Tourmaline Weight: 4.15 Carats Dimension: 9.5x9.5x6.4 Mm Origin: Afghanistan Shape: Square
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.75 Carats Natural Loose Green Tourmaline With Lagoon Color Shade Asscher Cut
Located in Peshawar, PK
Loose Tourmaline Weight: 6.75 Carats Dimension: 11.4x11.1x8 Mm Origin: Kunar Afghanistan Shape
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

6.50 Carat Natural Loose Pink Kunzite Asscher Cut Gem For Jewellery Making
Located in Peshawar, PK
Loose Kunzite Weight: 6.50 Carats Dimension: 10.4 x 10.4 x 7.9 Mm Colour: Pale Pink Origin: Kunar
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Kunzite

Elegant 9.80 Carat Perfect Square Asscher Cut Citrine Loose Gemstone Brazil Mine
Located in Peshawar, PK
Origin : Brazil Color: Yellow Shape: Square Cut: Asscher Certificate: On Demand Month: November . The
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

4.25 Carat Natural Loose Light Green Tourmaline Asscher Cut Gem For Jewellery
Located in Peshawar, PK
Loose Tourmaline Weight: 4.25 Carats Dimension: 9.5 x 9.4 x 6.4Mm Colour: Light Green Origin
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

3.65 Cts Natural Light Aquamarine Loose Gemstone Asscher Cut From Pakistan Mine
Located in Peshawar, PK
Blue Shape: Asscher Certficate: On Customer Demand Treatment: Non . Aquamarine is a captivating
Category

Antique Early 1600s Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

10.60 Carat Natural Loose Citrine Asscher Cut Ring Gemstone From Brazil Mine
Located in Peshawar, PK
Color: Brown Yellow Shape: Asscher Certificate: On Demand Month: November . The Many Healing Properties
Category

Late 20th Century Brazilian Arts and Crafts Loose Gemstones

Materials

Citrine

10.30 Carat Loose Sky Blue Topaz Asscher Cut Baguette Shape from Brazil
Located in Peshawar, PK
: Eye Clean Shape: Baguette Cut: Long Asscher Color: Blue Certificate: On Demand . Blue Topaz
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Topaz, Blue Topaz

2.85 Carats Light Yellow Scapolite Stone Asscher Cut Tanzanian Gemstone
Located in Bangkok, TH
Shape octagon Cut Asscher Behold the mesmerizing beauty of this Tanzanian gemstone, a scapolite
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Other

Glamorous Loose 13.10 Carat Sky Blue Topaz Asscher Cut Gem For Necklace Jewelry
Located in Peshawar, PK
: Asscher Color: Blue Treatment: Non Certificate: On Demand Benefits Of Wearing Blue Topaz Stone: It helps
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Blue Topaz

12.02 Carats Pink Kunzite Asscher Natural Cut Stone For Fine Gem Jewellery
Located in Jaipur, RJ
eye-catching jewelry. 12.02 Carats Pink Kunzite Natural Cut Stone For Fine Gem Jewellery Weight: 12.02
Category

21st Century and Contemporary Unknown Art Deco Loose Gemstones

Materials

Kunzite

Natural Pink Sapphire Bracelets 3 sets asscher cut stone For Fine Jewelry gems
Located in Jaipur, RJ
Pink Sapphire 3 Set For Bracelets asscher cutstone For Fine Jewellery gem Size & Weight : 3.00 MM
Category

2010s Malagasy Modern Loose Gemstones

Materials

Pink Sapphire

5.2ct Pink Asscher Rubellite Gemstone
By Hannaboya
Located in Sheridan, WY
stone’s natural brilliance and rich pink hue. Key Features: Gemstone: 5.2ct Pink Asscher Rubellite Cut
Category

2010s African Artisan Loose Gemstones

Materials

Rubelite

5.2ct Pink Asscher Rubellite Gemstone
5.2ct Pink Asscher Rubellite Gemstone
No Reserve
W 0.52 in D 0.32 in L 0.52 in
1.76ct Asscher Green Tourmaline from Brazil
Located in Toronto, Ontario
Description: Gem Type: Tourmaline Number of Stones: 1 Weight: 1.76 cts Measurements: 7.38 x 7.40 x
Category

2010s Brazilian Loose Gemstones

Materials

Tourmaline

1.76ct Asscher Green Tourmaline from Brazil
1.76ct Asscher Green Tourmaline from Brazil
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W 0.3 in D 0.2 in L 0.3 in
2.43ct Asscher Blue Zircon from Cambodia
Located in Toronto, Ontario
Description: Gem Type: Zircon Number of Stones: 1 Weight: 2.43 cts Measurements: 7.12 x 7.08 x
Category

2010s Cambodian Loose Gemstones

Materials

Blue Zircon

2.43ct Asscher  Blue Zircon from Cambodia
2.43ct Asscher  Blue Zircon from Cambodia
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W 0.29 in D 0.19 in L 0.28 in
0.8ct Pair Asscher Green Tourmaline from Brazil
Located in Toronto, Ontario
Description: Gem Type: Tourmaline Number of Stones: 2 Weight: 0.8 cts 0.40/0.40 Measurements: 4.47
Category

2010s Brazilian Loose Gemstones

Materials

Tourmaline

0.8ct Pair Asscher Green Tourmaline from Brazil
0.8ct Pair Asscher Green Tourmaline from Brazil
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W 0.18 in D 0.12 in L 0.18 in
1.44ct Pair Asscher Blue Tourmaline from Brazil
Located in Toronto, Ontario
Description: Gem Type: Tourmaline Number of Stones: 2 Weight: 1.44 cts 0.71/0.73 Measurements
Category

2010s Brazilian Loose Gemstones

Materials

Tourmaline

1.44ct Pair Asscher Blue Tourmaline from Brazil
1.44ct Pair Asscher Blue Tourmaline from Brazil
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W 0.21 in D 0.16 in L 0.21 in
London Blue Topaz Asscher Cut 16.60 Carats
Located in Bangkok, TH
London Blue Topaz Asscher Cut of 16.60 carats from Madagascar has a wonderful cut in a Square shape
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Topaz, Blue Topaz

London Blue Topaz Asscher Cut 16.60 Carats
London Blue Topaz Asscher Cut 16.60 Carats
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W 0.54 in D 0.41 in L 0.54 in
1pc Dazzling 3 Carat Asscher Cut Natural Diamond
Located in רמת גן, IL
This sparkling asscher cut diamond is a truly remarkable gem. With a carat weight of 3 carats, it
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1.18ct Pair Asscher Cut Green Tourmaline from Brazil
Located in Toronto, Ontario
Description: Gem Type: Tourmaline Number of Stones: 2 Weight: 1.18 cts (0.57ct/0.61ct
Category

2010s Brazilian Loose Gemstones

Materials

Tourmaline

1.18ct Pair Asscher Cut Green Tourmaline from Brazil
1.18ct Pair Asscher Cut Green Tourmaline from Brazil
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W 0.2 in D 0.15 in L 0.2 in
Authentic Aquamarine Gemstones 3.15 carats Asscher Cut Natural Pakistani Gem
Located in Bangkok, TH
Clean Shape Octagon Cut Asscher Discover a stunning collection of authentic Aquamarine gemstones
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

Rare Lagoon Yellowish Green Tourmaline Gemstones 3.60Ct Asscher Cut for Earrings
Located in Peshawar, PK
Green Natural Tourmaline Loose Gemstones, meticulously crafted into Asscher Cut designs, showcasing
Category

21st Century and Contemporary Bahraini Contemporary Loose Gemstones

Materials

Tourmaline

Glamming 20.50 Carats Asscher Cut Natural Aquamarine Gemstone Pair for Earrings
Located in Bangkok, TH
Gemstone Name Loose Aquamarine Pair for Earrings Weight 20.50 carats (10.20 carats each) Dimensions
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

Loupe clean 17.30 cts Ametrine asscher Faceted Cut Stone For Jewelry Natural Gem
Located in Jaipur, RJ
Gemstone Natural Ametrine Clarity : Loupe Clean Shape : Radiant Size : 15x15x12 mm Weight : 17.30 Carats Origin : Bolivia Treatment : None .
Category

21st Century and Contemporary Bolivian Art Deco Loose Gemstones

Materials

Amethyst, Citrine, Other

1.65 Carats Purplish Red Tourmaline Pair Asscher Cut Natural Nigerian Gemstone
Located in Bangkok, TH
octagon Cut Asscher This stunning pair of Purplish Red Asscher Cut Natural Nigerian Tourmaline
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline

Glam of Purple Amethyst 7.80 carats Asscher Cut Natural Brazilian Gemstone
Located in Bangkok, TH
(Slightly Included) Shape Octagon Cut Asscher Discover the mesmerizing allure of this exquisite 7.80
Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Amethyst

Capture the Essence of Nature Asscher Cut Peridot Gemstone Refresh and Renew
Located in Bangkok, TH
(Slightly Included) Shape Octagon Cut Asscher Experience the Mesmerizing Brilliance of Apple Green
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

Leon Mege Stunning Certified 1.83 Ct F/VS1 Asscher Cut Diamond; GIA #12323397
Located in New York, NY
Stunning True Antique™ Asscher cut diamond 1.83 ct F/VS1; GIA 12323397. The stone is loose, but
Category

2010s American Contemporary Loose Gemstones

Materials

Diamond

Light Purplish Pink Natural Kunzite Gemstone, 21.55 Ct Asscher Cut for Pendant
Located in Peshawar, PK
GEMSTONE TYPE: Kunzite PIECE(S): 1 WEIGHT: 21.55 Carats SHAPE: Asscher Cut SIZE (MM): 15.63 x
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Kunzite

True Luxury Swiss Blue Topaz 12.80 carats Asscher Cut Natural Madagascar's Gem
Located in Bangkok, TH
Eye Clean Shape Octagon Cut Asscher Elevate your jewelry collection with the timeless beauty of
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Topaz, Blue Topaz

2.65 Carats SI Clarity Faceted Mint Green Tourmaline Asscher Cut Ring Gemstone
Located in Peshawar, PK
: Octagon Cut: Asscher Certficate: On Customer Demand Mint green tourmaline, a member of the vibrant
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

16.20 Carat Natural Faceted Golden Topaz Gemstone for Jewelry Making Asscher Cut
Located in Peshawar, PK
: Skardu Color: Golden Shape: Octagon Cut: Asscher Certificate: On Demand Month: November November
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

3.77 Cts Natural Blue Tanzanite, Octagon Shape, Asher Cut, Loose Gemstone
Located in New York, NY
SKU - 50009 Stone : Natural Tanzanite Clarity - Eye clean Shape - Asher Cut Grade - AAA Weight
Category

21st Century and Contemporary Tanzanian Loose Gemstones

Materials

Tanzanite

Fabulous Apple Green Loose Peridot 4.05 Carats Peridot Gemstone for Ring Jewelry
Located in Bangkok, TH
Fabulous Apple Green Loose Peridot of 4.05 carats from Pakistan has a wonderful cut in a Octagon
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Peridot

1.37 Carat AAA Natural Pink Morganite Asher Cut Shape Loose Gemstone Jewelry
Located in New York, NY
SKU - 50015 Stone : Natural Pink Morganite Shape : Octagon Clarity - Eye clean Grade - AAA Weight
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Morganite

2.50 Carat AAA Natural Pink Morganite Asher Cut Shape Loose Gemstone Jewelry
Located in New York, NY
SKU - 50015 Stone : Natural pink morganite Shape : Octagon Clarity - Eye clean Grade - AAA Weight
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Morganite

2.24 Carat AAA Natural Pink Morganite Asher Cut Shape Loose Gemstone Jewelry
Located in New York, NY
SKU - 50015 Stone : Natural pink morganite Shape : Octagon Clarity - Eye clean Grade - AAA Weight
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Morganite

3.05 Carat AAA Natural Pink Morganite Asher Cut Shape Loose Gemstone Jewelry
Located in New York, NY
SKU - 50015 Stone : Natural pink morganite Shape : Octagon Clarity - Eye clean Grade - AAA Weight
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Morganite

Lovely Baby Pink Tourmaline Stone 2.05 Carats Tourmaline Gem Tourmaline Stone
Located in Bangkok, TH
Lovely Baby Pink Tourmaline Stone of 2.05 carats from Afghanistan has a wonderful cut in a Octagon
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Elegant 17.40 Carat Natural Loose Golden Color Topaz From Skardu Mine
Located in Peshawar, PK
: Skardu Color: Golden Shape: Emerald Cut: Asscher Certificate: On Demand Month: November November
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Topaz

14.7ct Asscher Cut Orange Pink Morganite from Brazil
Located in Toronto, Ontario
Description: Gem Type: Morganite Number of Stones: 4 Weight: 14.7 cts Measurements: 11.00 x 11.00
Category

2010s Brazilian Loose Gemstones

Materials

Morganite

14.7ct Asscher Cut Orange Pink Morganite from Brazil
14.7ct Asscher Cut Orange Pink Morganite from Brazil
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W 0.44 in D 0.28 in L 0.44 in
Amazing Light Golden Topaz Stone 13.05 Carats Natural Topaz Gemstone
Located in Bangkok, TH
Amazing Light Golden Topaz Stone of 13.05 carats from Skardu, Pakistan has a wonderful cut in a
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Topaz

Pretty Soft Pink Tourmaline Gemstone 2.05 Carats Tourmaline Stone for Rings
Located in Bangkok, TH
Tourmaline Stone Tourmaline Loose Gemstone Cuttingstone Facetedrough Cleanstone Gemstoneforjewelry
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

Lovely Color Apple Green Tourmaline 4.605 Carats Tourmaline Stone for Jewellery
Located in Bangkok, TH
, 4.605 carats Loose certified tourmaline gemstone from Congo. Product Information: GEMSTONE TYPE Lovely
Category

21st Century and Contemporary Congolese Modern Loose Gemstones

Materials

Tourmaline

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Loose Stone Asscher For Sale on 1stDibs

Surely you’ll find the exact loose stone asscher you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Frequently made of gold, 10k gold and 15k gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a loose stone asscher from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. A loose stone asscher from Gems and Jewels UK, Merkaba and Emeralds Maravellous — each of whom created a beautiful version of this treasured accessory — is worth considering. A loose stone asscher of any era or style can lend versatility to your look, but a version featuring tourmaline, from our inventory of 27, is particularly popular. A asscher cut version of this piece has appeal, but there are also emerald cut and octagon cut versions for sale. If you’re browsing our inventory for a loose stone asscher, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Loose Stone Asscher?

Prices for a loose stone asscher can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $91 and can go as high as $345,000, while this accessory, on average, fetches $400.

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.