Skip to main content

Loose Cushion Cut Gemstone

44
to
138
240
206
1,699
720
44
11
11
8
7
5
4
3
3
3
3
3
3
3
2
2
2
2
1
1
1
1
1
1
1
1
43
28
15
5
4
Sort By
3.12 Cts Emerald Cushion Cut Loose Gemstone
Located in Fort Lee, NJ
. Explore a vast range of Emeralds in our store available as a loose gemstone that can be customized & made
Category

21st Century and Contemporary Zambian Loose Gemstones

Materials

Emerald

3.12 Cts Emerald Cushion Cut Loose Gemstone
3.12 Cts Emerald Cushion Cut Loose Gemstone
Free Shipping
H 0.23 in W 0.31 in L 0.41 in
6.17 Carat Pink Cushion Cut Tourmaline Loose Gemstone
Located in Stamford, CT
gemstone. 1 Cushion cut tourmaline, approx. total weight. 6.17cts 10.90x10.91x8.02 Thank you for
Category

21st Century and Contemporary Loose Gemstones

Materials

Tourmaline

Marvelous Topaz Gemstone 14.95 carats Cushion Cut Loose Pakistani Topaz Gemstone
Located in Bangkok, TH
(slightly included) Shape Cushion Cut Fancy Cushion Discover the allure of this exquisite topaz loose
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Topaz

1.20 Carat Natural Loose Cushion Cut Red Spinel Gemstone
Located in Peshawar, PK
: Cushion Color: Red Treatment: Non / Natural Certificate: On Demand . The red spinel gemstone is linked to
Category

21st Century and Contemporary Burmese Arts and Crafts Loose Gemstones

Materials

Spinel

Fine Light Blue Aquamarine 2.72ct Fancy Cushion Cut Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
excellent cushion cut with ideal polish to show great shine and colour, would look lovely in jewellery
Category

21st Century and Contemporary Loose Gemstones

Materials

Aquamarine

3.00 Carats Yellow Loose Chrysoberyl Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Shape cushion Cut Cushion The 3.00-carat Yellow Chrysoberyl Cushion Cut Natural Tanzanian Gemstone
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Chrysoberyl

.85 Carat Cushion Cut Unset Loose Unmounted Red Spinel Gemstone
By Sarosi By Timeless Gems
Located in Los Angeles, CA
! Petite and absolutely stunning, this cushion-shaped spinel weighs .85 carat and measures 5.92 x.4.80
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Spinel

6.14 Carat Tourmaline Gemstone, Cushion Cut Blue Green Loose Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Color: Blue Green Origin: Afghanistan Dimensions (mm): 11.3 x 9.1 x 8.3 Weight
Category

20th Century Afghan Loose Gemstones

Materials

Tourmaline

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

Natural Light Blue Aquamarine 2.55 Carats Cushion Cut Loose Pakistani Gemstone
Located in Bangkok, TH
exquisite Aquamarine. This 2.55-carat Cushion Cut loose gemstone radiates beauty and elegance, making it a
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

NATURAL 1.92ct Fine Pink Zircon Cushion Cut Loose Gemstone 8.8x5.2mm VVS
By Gems and Jewels UK
Located in Birmingham, GB
, VVS. Also has an excellent cushion cut and polish to show great shine and colour, would look lovely
Category

21st Century and Contemporary Loose Gemstones

Materials

Zircon

Astonishing Aquamarine Gemstone 6.95 carats Cushion Cut Loose Gem from Pakistan
Located in Bangkok, TH
Clean Shape Cushion Cut Fancy Cushion Behold the enchanting allure of this exquisite aquamarine
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

Vivid Red Burmese Loose Spinel 2.70 carats Cushion Cut Natural Gemstone
Located in Bangkok, TH
) Treatment : None Origin : Burma Cut : Cushion Shape : Step Cushion Indulge in the timeless allure of the
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

5.60 Carats Sea Blue Loose Aquamarine Cushion Cut Natural Pakistani Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion The Sea Blue Aquamarine gemstone, boasting a generous weight of 5.60
Category

21st Century and Contemporary Pakistani Modern Loose Gemstones

Materials

Aquamarine

3.13 Carats Loose Blue Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
gemstone, showcasing a brilliant Cushion cut that accentuates its natural beauty. Originating from the rich
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

5.74 carats Loose Achroite Tourmaline Step Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
: Cushion Cut: Step Cushion The 5.74-carat Achroite Tourmaline is an exquisite natural gemstone sourced
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.20 Carats Lagoon Blue Loose Tourmaline Stone Cushion Cut Afghani Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion The stunning 3.20 carat Lagoon Blue Tourmaline Stone showcases the
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

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

4.61 carats Loose Greenish Blue Tourmaline Cushion Cut Natural Afghani Gemstone
Located in Bangkok, TH
clean Shape cushion Cut fancy cushion In a breathtaking display of nature's artistry, a 4.61
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

7.15 Carats Sweet Pink Loose Tourmaline Stone Cushion Cut Afghani Gemstone
Located in Bangkok, TH
mesmerizing Cushion Cut, emanating from the rich mines of Afghanistan. This exquisite gemstone captivates with
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

1.65 Carats Natural Red Burmese Loose Spinel Stone Cushion Cut Gemstone
Located in Bangkok, TH
Shape cushion Cut fancy cushion Behold the allure of this exquisite 1.65 carats Natural Red
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.50 Carats Red Burmese Loose Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.50 carats Natural Red Burmese Spinel
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.40 Carats Natural Red Loose Burmese Spinel Stone Cushion Cut Gemstone
Located in Bangkok, TH
Shape cushion Cut fancy cushion Behold the allure of this exquisite 1.40 carats Natural Red Burmese
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

4.97 carats Greenish Blue Loose Tourmaline Cushion Cut Natural Afghani Gemstone
Located in Bangkok, TH
Shape cushion Cut Fancy cushion In a breathtaking display of nature's artistry, a 4.97 carat
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

2.60 Carats Baby Pink Loose Tourmaline Stone Cushion Cut Afghani Gemstone
Located in Bangkok, TH
Cushion Cut, emanating from the rich mines of Afghanistan. This exquisite gemstone captivates with its
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.21 Carats Loose Blue Tourmaline Stone Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Cut Step Cushion The 3.21 carats Blue Tourmaline Stone is a captivating and exquisite gemstone
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

4.45 Carats Yellow Loose Sphene Stone Fancy Cushion Cut Madagascar's Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion In the realm of exquisite gemstones, a dazzling 4.45 carat Sphene takes
Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Beryl

6.90 carats Bubblegum Pink Loose Tourmaline Step Cushion Cut Nigerian Gemstone
Located in Bangkok, TH
, boasts a remarkable 6.90 carats of natural beauty in an elegant Cushion Cut. This gemstone mesmerizes
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Tourmaline

2.80 carats Sea Blue Loose Aquamarine Cushion Cut Natural Nigerian Gemstone
Located in Bangkok, TH
, skillfully crafted into a mesmerizing Cushion Cut, showcasing the natural allure of this Nigerian gemstone
Category

21st Century and Contemporary Nigerian Modern Loose Gemstones

Materials

Aquamarine

Bluish Green Tourmaline 3.20- carats Cushion Cut Natural Loose African Gemstone
Located in Bangkok, TH
3.20 carat gemstone with an elegant cushion cut, which enhances its brilliance and clarity. This
Category

21st Century and Contemporary African Modern Loose Gemstones

Materials

Tourmaline

3.25 carats Lagoon Blue Loose Tourmaline Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Cut Mix Cushion The 3.25 carat Lagoon Blue Tourmaline is a mesmerizing gemstone, boasting a Mix
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

1.75 Carats Gray Loose Burmese Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
Cushion Cut Fancy Cushion The 1.75 carats Gray Burmese Spinel Stone is a captivating natural gemstone
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

2.67 carats Lavender Loose Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
clean Shape cushion Cut fancy cushion The exquisite Lavender Spinel stone, boasting a weight of
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

Natural Peach Morganite Cushion Cut 11.29 Cts Loose Gemstone Morganite Jewelry
Located in New York, NY
Morganite , Aquamrine, Blue Topaz, Opal Loose Gemstone
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Morganite

Brazil Natural Aquamarine Cushion Cut 6.12 Cts Loose Gemstone Aquamarine Jewelry
Located in New York, NY
Morganite , Aquamrine, Blue Topaz, Opal Loose Gemstone
Category

21st Century and Contemporary Brazilian Loose Gemstones

Materials

Aquamarine

Rare Green Cushion Cut Natural Tourmaline Loose Gemstone, 5.05 Carat-Afghanistan
Located in Peshawar, PK
Remarkable Cushion Cut Bluish Green Natural Tourmaline from Kunar Mines of Afghanistan with
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Green Peridot Cushion Cut Natural Loose Gemstones, 4.90 Carat from Pakistan
Located in Peshawar, PK
in Pakistan, celebrated for yielding some of the world's finest peridots. The cushion cut showcases
Category

21st Century and Contemporary Pakistani Contemporary Loose Gemstones

Materials

Peridot

Green Peridot Cushion Cut Natural Loose Gemstones, 4.90 Carat from Pakistan
Green Peridot Cushion Cut Natural Loose Gemstones, 4.90 Carat from Pakistan
Free Shipping
H 0.34 in W 0.31 in D 0.21 in Dm 0.3 in L 0.32 in
3.05 Carats Natural Loose Seafoam Tourmaline Gemstone Cushion Cut Kunar Mine
Located in Peshawar, PK
Loose Tourmaline Weight: 3.05 Carats Dimension:8.5x7.2x6.2 Color: Seafoam Shape: Cushion Origin
Category

21st Century and Contemporary Afghan Artist Loose Gemstones

Materials

Tourmaline

Cornflower Blue Sapphire 1.84 Ct Cushion Cut Natural Unheated, Loose Gemstone
Located in South Melbourne, AU
Irresistible Ceylonese cornflower blue sapphire expertly cushion cut to just under 2 carat
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Sapphire

4.90 Carat Loose Pink Tourmaline Cushion Cut Gemstone for Jewelry Making
Located in Peshawar, PK
up a huge family of gemstones. Like most cut specimens, mint tourmalines belong to the elbaite
Category

21st Century and Contemporary Afghan Arts and Crafts Loose Gemstones

Materials

Tourmaline

8.80 Carat Together Natural Loose Amethyst Gemstone Cushion Cut Ring Gems
Located in Peshawar, PK
Gemstone Type : Amethyst Weight : 8.80 Carats 1 ( 5.40 Cts, 12x9.3x7.1 Mm) 2( 3.30 Cts, 9.6x8.2x7
Category

21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones

Materials

Amethyst

5.25 Carat Natural Loose Blue Seafoam Tourmaline Cushion Cut Ring Gemstone
Located in Peshawar, PK
gemstone connoisseurs and jewelry enthusiasts alike. It is often cut into various shapes, including faceted
Category

Antique Late 19th Century Afghan Art Deco Loose Gemstones

Materials

Tourmaline, Indicolite

3.65 Carats Loose Gohenite Gemstone Cushion Shape
Located in Peshawar, PK
Faceted Goshenite Weight: 3.65 Carats Dimension: 10.1x9.8x7 Mm Origin: Pakistan Shape: Cushion
Category

21st Century and Contemporary Pakistani Arts and Crafts Loose Gemstones

Materials

Aquamarine

3.65 Carats Loose Gohenite Gemstone Cushion Shape
3.65 Carats Loose Gohenite Gemstone Cushion Shape
Free Shipping
W 0.39 in D 0.28 in L 0.4 in
0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone
By Gems and Jewels UK
Located in Birmingham, GB
0.87ct Deep Blue Sapphire Square Cushion Cut IGI Certified Rare Loose Gemstone Natural Deep Blue
Category

20th Century Loose Gemstones

Materials

Blue Sapphire

Rare Green Natural Tourmaline Loose Gemstone 2.10Ct Cushion Cut for Ring/Jewelry
Located in Peshawar, PK
mines of Kunar, Afghanistan. Meticulously crafted into a stunning cushion cut design, this gemstone
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Rare Blue Green Cushion Cut Natural Tourmaline Loose Gemstone, 4.05 Ct-Afghani
Located in Peshawar, PK
Behold the rare beauty of our Rare Blue Green Cushion Cut Natural Tourmaline Loose Gemstone
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

Rare Lagoon Green Natural Tourmaline Loose Gemstone, 7.65 Ct-Cushion Cut Afghani
Located in Peshawar, PK
Introducing our exquisite Lagoon Green Natural Tourmaline Loose Gemstone, a rare find of top-tier
Category

21st Century and Contemporary Afghan Contemporary Loose Gemstones

Materials

Tourmaline

1.15 Carats Orange Red Burmese Loose Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
. With its mesmerizing hue reminiscent of a fiery sunset, this cushion cut natural gemstone evokes a
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

2.05 carats Red Burmese Loose Spinel Stone Step Cushion Cut Natural Gemstone
Located in Bangkok, TH
Cushion Cut, showcasing the gemstone's natural allure. Originating from the famed mines of Burma, this
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

2.55 Carats Vivid Blue Loose Spinel Stone Cushion Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Tanzanian beauty, showcasing a captivating Cushion Cut that enhances its inherent allure. This gemstone is a
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

1.55 Carats Deep Red Burmese Loose Spinel Stone Cushion Cut Natural Gemstone
Located in Bangkok, TH
Shape cushion Cut fancy cushion Behold the allure of this exquisite 1.55 carats Natural Deep Red
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.45 Carats Natural Loose Red Burmese Stone Spinel Stone Cushion Cut Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.45 carats Natural Red Burmese Spinel
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.30 Carats Natural Red Loose Burmese Spinel Stone Fancy Cushion Cut Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.30 carats Natural Red Burmese Spinel
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Bright Baby Pink Loose Tourmaline 3.65 Carats Step Cushion Cut Nigerian Gemstone
Located in Bangkok, TH
(Slightly Included) Shape Cushion Cut Step Cushion Origin Nigeria Treatment None Behold the exquisite
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

6.78 carats Loose Mint Green Tourmaline Step Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
6.78 carats 11.6x9x8 mm Clarity: SI Origin: Afghanistan Treatment : None Shape: Cushion Cut: Step
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

1.60 Carats Red Burmese Loose Spinel Stone Fancy Cushion Cut Natural Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.60 carats Red Burmese Spinel, a
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.35 Carats Natural Loose Red Burmese Spinel Stone Fancy Cushion Cut Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.35 carats Red Burmese Spinel, a
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

1.37 Carats Red Burmese Loose Spinel Stone Fancy Cushion Cut Natural Gemstone
Located in Bangkok, TH
cushion Cut fancy cushion Behold the allure of this exquisite 1.37 carats Red Burmese Spinel, a
Category

21st Century and Contemporary Burmese Modernist Loose Gemstones

Materials

Spinel

Mint Green Loose Tourmaline 2.25 carats Step Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Included) Origin Afghanistan Shape Cushion Cut Step Cushion The Mint Green Tourmaline, weighing 2.25
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

3.79 Carats Bi Color Loose Tourmaline Pair Cushion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Afghanistan Clarity SI Shape cushion Cut fancy cushion These exquisite Bi-color tourmaline gemstones
Category

21st Century and Contemporary Afghan Modern Loose Gemstones

Materials

Tourmaline

  • 1
  • ...
Get Updated with New Arrivals
Save "Loose Cushion Cut Gemstone", and we’ll notify you when there are new listings in this category.

Loose Cushion Cut Gemstone For Sale on 1stDibs

Find the exact loose cushion cut gemstone you’re shopping for in the variety available on 1stDibs. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for a loose cushion cut gemstone may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Creating a loose cushion cut gemstone has been a part of the legacy of many jewelers, but those produced by Fine Jewels UK and TJD are consistently popular. While most can agree that any loose cushion cut gemstone from our collection can easily elevate most outfits, but the choice of a Topaz version from the 16 available is guaranteed to add a special touch to your ensemble. Today, if you’re looking for a cushion cut version of this piece and are unable to find the perfect match, our selection also includes alternatives. There aren’t many items for men if you’re seeking a loose cushion cut gemstone, as most of the options available are for women and unisex.

How Much is a Loose Cushion Cut Gemstone?

Prices for a loose cushion cut gemstone can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $63 and can go as high as $48,500, while this accessory, on average, fetches $1,225.

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.