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Unheated 5.02 Carat Blue Spinel, Loose Gemstone, GIA Certified ..... A
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This unheated blue spinel has exceptional brilliance and luster! Accompanied by Gemological
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.20 Carat Oval Cut Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
Fine Natural Blue Spinel Gemstone. Rare spinel with a fine vivid blue colour and excellent
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Gray Blue Spinel Ring Gem 4.15 Carat Round Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Rare and exclusive 4.15 carat grayish Blue Spinel round gem, offered loose to a devoted gemstone
Category

21st Century and Contemporary Sri Lankan Contemporary Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.54ct Oval Cut Rare Gemstone Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Fine Natural Blue Spinel Gemstone. Rare spinel with a fine vivid blue colour and excellent clarity
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Fine Deep Blue Natural Spinel 1.04ct Cushion Cut Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Fine Deep Blue Natural Spinel 1.04ct Cushion Cut 8.4x4mm Loose Rare Gem Natural Vivid Blue Spinel
Category

20th Century Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.20ct Oval Cut Rare Gemstone Loose Rare Gem
Located in Birmingham, GB
Fine Blue Spinel 1.20ct Oval Cut Rare Gemstone 7 x 5.8mm Loose Rare Gem Fine Natural Blue Spinel
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Fine Blue Spinel 1.08ct Oval Cut Rare Gemstone Loose Rare Gem
Located in Birmingham, GB
Fine Blue Spinel 1.08ct Oval Cut Rare Gemstone 6.5 x 5.3mm Loose Rare Gem Fine Natural Blue Spinel
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

Fine 'Titanium' Spinel 1.63ct Purple Blue Oval Cut Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Fine 'Titanium' Spinel 1.63ct Purple Blue Oval Cut 8x6.8mm Loose Rare Gem Natural Grey Blue Purple
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

2.54 Carat Loose Blue Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cut Fancy Cushion Shape Cushion The 2.54 carat Blue Spinel Stone is an exquisite example of
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

3.13 Carats Loose Blue Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cushion Cut Step Cushion The 3.13 carat Light Blue Spinel Stone is an exquisite and captivating
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

1.05ct Fine Blue Spinel Marquise Cut Rare Gemstone 9.6x4.4mm Loose Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.05ct Fine Blue Spinel Marquise Cut Rare Gemstone 9.6x4.4mm Loose Rare Gem Fine Natural Vivid
Category

20th Century Loose Gemstones

Materials

Spinel

Bright Blue Burmese Loose Spinel 2.45 carats Step Oval Cut Natural Gemstone
Located in Bangkok, TH
Loose Spinel, a true testament to nature's artistry. Weighing an impressive 2.45 carats, this gemstone
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.40 Carat Loose Burmese Red Spinel Faceted Red Spinel from Myanmar
Located in Peshawar, PK
Faceted Spinel Weight: 1.40 Carats Dimension: 6.1x6.1x4.6 Mm Origin: Burma / Myanmar Color: Red
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

2.55 Carats Vivid Blue Loose Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cut Step Cushion The 2.55-carat Vivid Blue Spinel Stone is an exquisite example of natural
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

Vivid Blue Loose Spinel 1.15 carats round brilliant cut Natural Burmese Gemstone
Located in Bangkok, TH
Shape round Cut round brilliant The Vivid Blue Spinel is a captivating gemstone, boasting a
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

GGI Certified 0.76 Carats Loose Red Spinel from Burma, Faceted Burmese Spinel
Located in Peshawar, PK
Gorgeous Loose Spinel Weight: 0.76 Carats Dimension: 5.81x4.45x3.38 Mm Origin: Burma Color: Red
Category

2010s Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

1.20 Carat Natural Loose Cushion Cut Red Spinel Gemstone
Located in Peshawar, PK
go for a natural Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

Lovely Cobalt Blue Natural Spinel 1.22 Carats Spinel Gemstones Spinel Jewelry
Located in Bangkok, TH
Lovely Cobalt Blue Natural Spinel of 1.22 carats from Sri lanka has a wonderful cut in a Oval shape
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Outstanding Deep Blue Spinel Gemstone 3.35 Carats Spinel Jewelry Spinel Ring
Located in Bangkok, TH
Outstanding Deep Blue Spinel Gemstone, Available For Sale At Wholesale Price Natural High Quality
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Spinel

Natural Loose Red Burmese Spinel Cushion Cut Gemstone 1.60 Carat
Located in Peshawar, PK
Gorgeous Loose Spinel Weight: 1.60 Carats Dimension: 7x5.9x4.6 Mm Origin: Burma Color: Red Shape
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

Stunning 1.25 Carat Natural Loose Burmese Red Spinel Cushion Shape Gemstone
Located in Peshawar, PK
go for a natural Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel, Black Spinel

Natural Beautiful Electric Blue Spinel
Located in Bangkok, TH
Introducing a stunning electric blue spinel with a carat weight of 3.11 ct. Its brilliant cushion
Category

2010s Burmese Loose Gemstones

Materials

Spinel

Natural Beautiful Electric Blue Spinel
Natural Beautiful Electric Blue Spinel
Free Shipping
W 0.28 in D 0.24 in L 0.35 in
1.05 Carat Loose Red Spinel from Myanmar Burma Available for Jewelry Making
Located in Peshawar, PK
Loose Spinel Weight : 1.05 Carats Dimensions : 6.8x5.4x3.7 Mm Origin : Burma Myanmar Clarity : Eye
Category

2010s Burmese Arts and Crafts Loose Gemstones

Materials

Spinel, Black Spinel

1.05 Carat Loose Red Spinel from Myanmar Burma Available for Jewelry Making
1.05 Carat Loose Red Spinel from Myanmar Burma Available for Jewelry Making
Free Shipping
H 0.27 in W 0.22 in D 0.15 in L 0.27 in
Gorgeous 1.40 Carat Cushion Shape Natural Loose Red Burmese Spinel Gemstone
Located in Peshawar, PK
Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in place of Blue
Category

Antique 16th Century Burmese Baroque Loose Gemstones

Materials

Spinel

Charming 1.25 Carat Cushion Cut Loose Natural Red Spinel from Burma Myanmar
Located in Peshawar, PK
Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in place of Blue
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel, Black Spinel

Stunning 1.60 Carat Natural Loose Red Spinel from Myanmar Burma Cushion Shape
Located in Peshawar, PK
Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in place of Blue
Category

21st Century and Contemporary Burmese Baroque Loose Gemstones

Materials

Spinel

Lotus Certified 3.72 Carat Blue Spinel
Located in Hua Hin, TH
3.72 Carat Blue Spinel Shape: Antique Cushion Faceted Dimensions: 9.63 x 7.09 x 6.51 mm Weight
Category

2010s Loose Gemstones

Materials

Spinel

Lotus Certified 3.72 Carat Blue Spinel
Lotus Certified 3.72 Carat Blue Spinel
Free Shipping
W 0.38 in D 0.26 in L 0.28 in
1.92 Carat Blue Spinel Lotus Certified
Located in Hua Hin, TH
1.92 Carat Blue Spinel from Sri Lanka Shape: Antique. Cushion Cutting Style: Faceted Brilliant
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

1.92 Carat Blue Spinel Lotus Certified
1.92 Carat Blue Spinel Lotus Certified
Free Shipping
W 0.33 in D 0.17 in L 0.27 in
2.06 Carat Cobalt Blue Ceylon Spinel
Located in Hua Hin, TH
2.06 Carat Natural Cobalt Blue Spinel from Sri Lanka (Ceylon) Dimension: 7.71 x 6.30 x 5.27 mm
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

2.06 Carat Cobalt Blue Ceylon Spinel
2.06 Carat Cobalt Blue Ceylon Spinel
Free Shipping
W 0.25 in D 0.21 in L 0.31 in
Beautiful 1.45 Carat Natural Loose Red Spinel From Burma Myanmar Cushion Shape
Located in Peshawar, PK
go for a natural Spinel gemstone. Red Spinel can substitute for Ruby where Blue Spinel can be worn in
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

1.05 Carat Natural Blue Ceylon Spinel
Located in Hua Hin, TH
1.05 Carat Natural Blue Spinel from Sri Lanka (Ceylon) Dimension: 6.43 x 5.17 x 3.51 mm Weight
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

1.05 Carat Natural Blue Ceylon Spinel
1.05 Carat Natural Blue Ceylon Spinel
Free Shipping
W 0.21 in D 0.14 in L 0.26 in
Sparkling Natural Blue Spinel Gem Cushion Cut
Located in רמת גן, IL
polish. It comes with a fancy jewelry box. 1 spinel main stone cut: cushion color: blue sku: DSPV
Category

2010s Singaporean Loose Gemstones

Materials

Spinel

Color-Change 4.80 Carat Blue Spinel
Located in Hua Hin, TH
This spinel has been blessed with the rare Color-Change phenomena, oscillating between a delicate
Category

2010s Malagasy Loose Gemstones

Materials

Spinel

Color-Change 4.80 Carat Blue Spinel
Color-Change 4.80 Carat Blue Spinel
Free Shipping
W 0.42 in D 0.28 in L 0.34 in
1.42 Carat Blue-Violet Spinel Lotus Certified
Located in Hua Hin, TH
1.42 Carat Blue-Violet Spinel from Sri Lanka Shape: Antique. Cushion Cutting Style: Faceted
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

1.42 Carat Blue-Violet Spinel Lotus Certified
1.42 Carat Blue-Violet Spinel Lotus Certified
Free Shipping
W 0.28 in D 0.15 in L 0.26 in
1.98 Carat Natural Blue Cobalt Spinel from Burma
Located in Hua Hin, TH
1.98 Carat Natural Blue Cobalt Spinel from Burma Dimension: 7.68 x 6.35 x 5.28 mm Shape: Oval Cut
Category

2010s Burmese Loose Gemstones

Materials

Spinel

1.98 Carat Natural Blue Cobalt Spinel from Burma
1.98 Carat Natural Blue Cobalt Spinel from Burma
Free Shipping
W 0.31 in D 0.21 in L 0.25 in
Blue spinel certified will come with a certificate 2.40ct
Located in Jupiter, FL
LOVELY BLUE SPINEL, WILL COME WITH A CERTIFICATE. NATURAL GEMSTONE(S): SPINEL Clarity/Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Spinel

GIA Certified Natural Vietnamese Cobalt Blue Spinel 0.54 Carats
Located in Los Angeles, CA
beauty of nature's finest creations. Identification: Natural Vietnamese Cobalt Blue Spinel • Carat
Category

21st Century and Contemporary Vietnamese Modern Loose Gemstones

Materials

Spinel

GIA Certified Natural Vietnamese Cobalt Blue Spinel 0.54 Carats
GIA Certified Natural Vietnamese Cobalt Blue Spinel 0.54 Carats
Free Shipping
H 0.11 in W 0.18 in L 0.25 in
GIL Certified 1.91 Carat Cobalt Blue Natural Spinel from Burma
Located in Hua Hin, TH
GIL Certified 1.91 carat Cobalt Blue Natural Spinel from Burma Weight: 1.91 Carat Dimension: 7.66 x
Category

2010s Burmese Loose Gemstones

Materials

Spinel

Sparkling Flawless 2.11 Carat Blue Spinel Lotus Certified No Heat
Located in Hua Hin, TH
A Sparkling Flawless 2.11 carat Blue Spinel Lotus Certified Dimensions 7.67 x 6.91 x 4.52 mm Shape
Category

2010s Loose Gemstones

Materials

Spinel

GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Untreated
Located in Hua Hin, TH
GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Dimension: 7.84 x 6.32 x 4.59 mm
Category

2010s Burmese Loose Gemstones

Materials

Spinel

2.50 Carats Violetish Blue Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion The 2.50 carats Violetish Blue Spinel Stone showcases the exquisite beauty
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

2.55 Carats Light Blue Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cut Step Cushion The 2.55-carat Light Blue Spinel Stone is an exquisite and captivating gemstone
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

GIL Certified 2.12 Carat Cobalt Blue Spinel from Burma No Heat
Located in Hua Hin, TH
GIL Certified 2.12 carat Cobalt Blue Spinel from Burma No Heat Dimension: 7.00 x 7.56 x 4.79 mm
Category

2010s Burmese Loose Gemstones

Materials

Spinel

23.96 Carats Blue Spinel Tanzania Oval Faceted Natural CutStone Fine Jewelry Gem
Located in Jaipur, RJ
23.96 Carats Blue Spinel Tanzania Oval Faceted Natural Cut Stone Fine Jewelry Gem Weight - 23.96
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

1.06 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.06 Ct Size - 6x4x3 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

0.78 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 0.78 Ct Size - 7x4x3 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

1.11 Carats Tanzania Blue Spinel Oval Faceted Natural Cutstone for ring Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.11 Ct Size - 7x6x5 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

1.06 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.06 Ct Size - 7x5x4 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

1.64 Carats Tanzania Blue Spinel Oval Faceted Natural Gemstone for Fine Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Fine Jewelry Weight - 1.64 Ct Size - 8x6x4
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

2.13 Carats Blue Spinel Oval Faceted Natural Gemstone for Fine Jewelry Tanzania
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Fine Jewelry Origin - Tanzania Weight
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

10.47 Carat Grey & Blue Spinel Tanzania Faceted Fancy Cut stone Natural Gemstone
Located in Jaipur, RJ
10.47 Carat Grey & Blue Spinel Tanzania Fancy Faceted Cut stone Natural Gemstone Weight - 10.47
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

3.06 carats Light Blue Spinel Stone Step Cushion cut Natural Afghan Gemstone
Located in Bangkok, TH
Shape Cushion Cut Step Cushion The Light Blue Spinel is a captivating gemstone, boasting a
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Spinel

3.69 carats Cobalt Blue Spinel Stone Oval Mixed Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cobalt Blue Spinel takes center stage, showcasing its allure through a Mixed Oval Cut. Originating from
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

0.93 Carats Tanzania Blue Spinel Heart Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Heart Faceted Natural Cut Stone for Jewelry Weight - 0.93 Ct Size - 6x3 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

0.87 Carats Tanzania Blue Spinel Octagon Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Octagon Faceted Natural Cut Stone for Jewelry Weight - 0.87 Ct Size - 8x4x3 mm
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Beautiful Open Color Spinel Oval
Located in Bangkok, TH
Introducing our stunning Open Oval Blue Spinel from Tanzania! With its captivating hue and
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Beautiful Open Color Spinel Oval
Beautiful Open Color Spinel Oval
No Reserve
W 0.25 in D 0.18 in L 0.31 in
35.12 Carat Blue Spinel Tanzania Faceted Pear Cut stone For Jewelry Natural Gem
Located in Jaipur, RJ
35.12 Carat Blue Spinel Tanzania Faceted Pear Cut stone For Jewelry Natural Gem Weight - 35.12
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

24.86 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem
Located in Jaipur, RJ
24.86 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem Weight - 24.86
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

37.14 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem
Located in Jaipur, RJ
37.14 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem Weight - 37.14
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

34.50 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem
Located in Jaipur, RJ
34.50 Carat Blue Spinel Tanzania Oval Faceted Natural Cut stone Fine Jewelry Gem Weight - 34.50
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

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Blue Spinel Loose For Sale on 1stDibs

Surely you’ll find the exact blue spinel loose you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Each design created in this style — which was crafted with great care and often made from Titanium — can elevate any look. For this particular piece, 1.5 Carat and 2 Carat are consistently popular carat weights. Finding an appealing blue spinel loose — no matter the origin — is easy, but Gems and Jewels UK, Sarosi By Timeless Gems and Merkaba each produced a popular version that is worth a look. See these pages for an oval cut iteration of this accessory, while there are also cushion cut cut and pear cut cut versions available here, too. Finding a blue spinel loose for sale for men should be easy, but there are 10 pieces available to browse for unisex as well as women, too.

How Much is a Blue Spinel Loose?

The price for a blue spinel loose starts at $165 and tops out at $45,000 with these more-jewelry-watches, on average, selling for $238.

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.