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Cushion Gia Loose

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GIA 3.02 Carat Cushion Brilliant Cut Loose Diamond
Located in Beverly Hills, CA
One GIA 3.02 Carat Cushion Brilliant Cut Loose Diamond. Accompanied by GIA #5231221039 stating the
Category

Late 20th Century Loose Gemstones

Materials

Diamond

Loose Diamond - Cushion 4.01ct GIA D VS2 Solitaire
Located in Greensboro, NC
Carat: 4.01ct Cut: Cushion Color: D Clarity: VS2 Certified by: GIA Report Number: 2223271109
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

GIA 4.52 Carat Cushion Modified Brilliant Cut Loose Diamond
Located in Beverly Hills, CA
One GIA 4.52 Carat Cushion Modified Brilliant Cut Loose Diamond. Accompanied by GIA #2239209305
Category

20th Century Loose Gemstones

Materials

Diamond, White Diamond

36.96 Carat Pink Tourmaline Cushion, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. It has been faceted into a symmetrical roundish oval cushion with excellent proportions and superior
Category

21st Century and Contemporary Unknown Artisan Loose Gemstones

Materials

Tourmaline

GIA Certified 1.72 Carat Cushion Cut Diamond Loose Stone
By Roman Malakov
Located in New York, NY
A beautiful cushion cut diamond certified by GIA as G color, SI1 clarity with excellent polish and
Category

21st Century and Contemporary American Loose Gemstones

Materials

Diamond

GIA Certified 1.72 Carat Cushion Cut Diamond Loose Stone
GIA Certified 1.72 Carat Cushion Cut Diamond Loose Stone
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W 0.26 in D 0.19 in L 0.28 in
GIA Certified 4.04 Carat Cushion Cut Loose Diamond H / VS1
Located in New York, NY
Our Gorgeous 4.04 Carat Cushion Cut Natural Loose Diamond will be the star of any unique engagement
Category

2010s American Loose Gemstones

Materials

Diamond

GIA Certified 40.11 Carat Loose Untreated Natural Cushion Yellow Sapphire
Located in Carmel-by-the-Sea, CA
Rare unheated, untreated, large natural yellow sapphire. GIA Cert No.: 2223993369 dated July 14
Category

2010s Loose Gemstones

Materials

Yellow Sapphire

Loose Diamond, Cushion Cut .91 Carat GIA H SI2 Solitaire
Located in Greensboro, NC
Weight: .91ct Cut: Cushion Color: H Clarity: SI2 Dimensions (mm): 5.62 x 5.42 x 3.75 GIA
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Diamond

1.51 Carat Loose Padparadscha Sapphire, Cushion Cut GIA Graded Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Color: Orangy Pink Treatment: Heating Dimensions (mm): 6.76 x 5.73 x 4.13
Category

20th Century Unknown Loose Gemstones

Materials

Sapphire

3.05 Carat Cushion Cut Natural Loose Diamond F / SI1 GIA Certified
Located in New York, NY
Gorgeous GIA Certified 3.05 Carat Cushion Cut Natural Diamond. Color - F Clarity- SI 1 Symmetry
Category

2010s American Loose Gemstones

Materials

Diamond

33.95 Carat Imperial Topaz Cushion, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This impressive, peachy orange gem is a beautiful example of Imperial topaz at its finest! It is an exquisite gem exhibiting superior brilliance and life, weighs 33.95 carats, and is...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Topaz, Imperial Topaz

1.12 Carat Loose Diamond, Cushion Cut GIA Graded I1 L Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Clarity: I1 Color: L Dimensions (mm): 5.84 x 5.62 x 3.88 Weight: 1.12ct GIA
Category

20th Century Unknown Loose Gemstones

Materials

Diamond

GIA Cushion 1.06 Carat Natural Loose Fancy Grayish Yellowish Green SI1 Diamond
Located in רמת גן, IL
GIA Report #2201901084 GIA Cushion 1.06 Carat natural Loose Fancy Grayish Yellowish Green SI1
Category

2010s Modern Loose Gemstones

Materials

Diamond

Unheated 9.26 Carat Purple Pink Spinel Cushion, Loose Gemstone, GIA Certified .A
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This unheated, purplish-pink spinel will lift your spirits! Accompanied by Gemological Institute of America Report #2151269774, this large spinel weighs 9.26 carats and measures 11.7...
Category

21st Century and Contemporary Artisan Loose Gemstones

Materials

Spinel

GIA Certified 3.52 Carat Natural Alexandrite Cushion Shape, Loose Alexandrite
Located in Los Angeles, CA
glance. Its colour is perfect and makes it the perfect addition to any jewelry collection. The GIA
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Alexandrite

1.00ct Loose Cushion Cut Diamond GIA Certified, H Color, VS2 Clarity, Good Cut
Located in Rancho Santa Fe, CA
Brilliant 1.00ct loose cushion modified brilliant-cut diamond that's been GIA certified. The color
Category

2010s Unknown Modern Loose Gemstones

Materials

Diamond

Tsavorite Ring Gem 5.87 Carat Cushion Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Exceptional 5.87 carat Tsavorite Garnet cushion gem, offered loose to a world-class gemstone
Category

21st Century and Contemporary Tanzanian Contemporary Loose Gemstones

Materials

Garnet, Tsavorite

15.16ct Cushion Aquamarine GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Aquamarine The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

15.16ct Cushion Aquamarine GIA Certified
15.16ct Cushion Aquamarine GIA Certified
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W 0.61 in D 0.42 in L 0.61 in
Loose Spinel, Cushion Cut 5.04 Carat Red Solitaire
Located in Greensboro, NC
Weight: 5.04ct Cut: Cushion Color: Red Dimensions (mm): 11.25 x 10.18 x 6.66 Condition: New
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Spinel

Loose Amethyst, Cushion Cut 11.49 Carat Purple Solitaire
Located in Greensboro, NC
Shape/Cut: Cushion Color: Purple Dimensions (mm): 16.39 x 12.14 Weight: 11.49ct Condition: New
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Amethyst

GIA Certified No Heat Cushion Ruby
Located in Great Neck, NY
GIA Certified Cushion Ruby 1.36 cts (7.25x6.80x3.00) mm NO HEAT
Category

2010s Unknown Modern Loose Gemstones

Materials

Ruby

GIA Certified No Heat Cushion Ruby
Located in Great Neck, NY
GIA Certified No Heat Ruby Cushion Shape 1.23 cts (7.55x6.06x2.61) mm
Category

2010s American Modern Loose Gemstones

Materials

Ruby

Exceptional Vivid Tanzanite Loose Stone 11.01 Carats GIA Certified
Located in Media, PA
GIA REPORT NUMBER: 6234199403 This exceptional loose tanzanite stone, weighing 11.01 carats, has
Category

21st Century and Contemporary Tanzanian Loose Gemstones

Materials

Tanzanite

Chrysoberyl Ring Gem 9.42 Carat GIA Certified Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
offered loose to a classy lady or gentleman. The GIA certificate is attached to the images for your
Category

21st Century and Contemporary Malagasy Contemporary Loose Gemstones

Materials

Chrysoberyl

11.42ct Cushion Pinkish Orange Morganite GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Morganite The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Morganite

11.42ct Cushion Pinkish Orange Morganite GIA Certified
11.42ct Cushion Pinkish Orange Morganite GIA Certified
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W 0.66 in D 0.32 in L 0.53 in
GIA 12.21 Carat Fancy Color Oval Shape Loose Diamond
Located in Great Neck, NY
GIA 12.21 Carat Fancy Color Oval Shape Loose Diamond Semi Translucent Color Brown-Orange
Category

2010s American Loose Gemstones

Materials

Diamond, Yellow Diamond

GIA 12.21 Carat Fancy Color Oval Shape Loose Diamond
Located in Great Neck, NY
GIA 12.21 Carat Fancy Color Oval Shape Loose Diamond Semi Translucent Color Brown-Orange
Category

2010s American Loose Gemstones

Materials

Diamond, Yellow Diamond

1.61 Carat Cushion shape diamond GIA Certified
Located in Kowloon, HK
***100% NATURAL FANCY COLOUR DIAMOND*** ✪ Diamond Details ✪ ➛ Shape: Cushion ➛ Colour Grade: W-X
Category

2010s Asian Loose Gemstones

Materials

Yellow Diamond, Diamond

1.61 Carat Cushion shape diamond GIA Certified
1.61 Carat Cushion shape diamond GIA Certified
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H 0.18 in W 0.25 in L 0.27 in
2.03ct Cushion Green Emerald GIA Certified Zambia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Zambian Contemporary Loose Gemstones

Materials

Emerald

2.03ct Cushion Green Emerald GIA Certified Zambia
2.03ct Cushion Green Emerald GIA Certified Zambia
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W 0.26 in D 0.2 in L 0.37 in
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

0.79ct Cushion Pink Sapphire GIA Certified Madagascar
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Pink Sapphire, Sapphire

0.79ct Cushion Pink Sapphire GIA Certified Madagascar
0.79ct Cushion Pink Sapphire GIA Certified Madagascar
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W 0.26 in D 0.13 in L 0.17 in
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

Alexandrite Chrysoberyl 1.16 Carat Loose Gemstone, GIA Certified - RTP
By Sarosi By Timeless Gems
Located in Los Angeles, CA
Gorgeous 1.16 carat cushion-shaped alexandrite chrysoberyl with beautiful blue-green body color in
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl

Alexandrite Chrysoberyl .78 Carat Loose Gemstone, GIA Certified - RTP
By Sarosi By Timeless Gems
Located in Los Angeles, CA
a 100% color change to purple in incandescent light. It is an oval cushion shape measuring 5.79 x
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Alexandrite, Chrysoberyl

7.35 Carat Cushion Natural Alexandrite GIA Certified
Located in San Francisco, CA
A Rare 7.35 Carat Cushion Shaped Natural Alexandrite GIA Certificate 6192711041 was hand-selected
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Alexandrite

Bright 1.50ct Ideal Cut Cushion Diamond - GIA Certified
Located in רמת גן, IL
Bright 1.50ct Ideal Cut Cushion Diamond - GIA Certified Discover timeless elegance with this
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Pristine 2.00ct Ideal Cut Cushion Diamond - GIA Certified
Located in רמת גן, IL
Pristine 2.00ct Ideal Cut Cushion Diamond - GIA Certified Discover the charm of this 2.00-carat
Category

2010s Israeli Loose Gemstones

Materials

Diamond

6.27 Carat Cushion Pink-Orange Morganite GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Morganite The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Morganite

6.27 Carat Cushion Pink-Orange Morganite GIA Certified
6.27 Carat Cushion Pink-Orange Morganite GIA Certified
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W 0.47 in D 0.3 in L 0.46 in
10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
Located in Toronto, Ontario
The GIA report reads as follows: GIA Report Number: 5222341738 Shape: Cushion Cutting Style
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
10ct Cushion Blue Aquamarine GIA Certified, Santa Maria
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W 0.71 in D 0.28 in L 0.49 in
2.18ct Cushion White Sapphire GIA Certified Sri Lanka
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Sri Lankan Loose Gemstones

Materials

Sapphire

2.18ct Cushion White Sapphire GIA Certified Sri Lanka
2.18ct Cushion White Sapphire GIA Certified Sri Lanka
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W 0.3 in D 0.18 in L 0.3 in
4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Unknown Loose Gemstones

Materials

Blue Sapphire, Sapphire

4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
4.36 Carat Cushion Blue Sapphire GIA Certified Unheated
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W 0.34 in D 0.26 in L 0.33 in
2.25ct Cushion Blue Sapphire GIA Certified Madagascar Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Malagasy Loose Gemstones

Materials

Blue Sapphire

2.25ct Cushion Blue Sapphire GIA Certified Madagascar Unheated
2.25ct Cushion Blue Sapphire GIA Certified Madagascar Unheated
Free Shipping
W 0.33 in D 0.18 in L 0.26 in
1.96ct Cushion Andalusite GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Andalusite The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Alexandrite

1.96ct Cushion Andalusite GIA Certified
1.96ct Cushion Andalusite GIA Certified
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W 0.41 in D 0.18 in L 0.23 in
9.70ct Cushion Morganite GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Morganite The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Morganite

9.70ct Cushion Morganite GIA Certified
9.70ct Cushion Morganite GIA Certified
Free Shipping
W 0.61 in D 0.34 in L 0.42 in
GIA Certified Carved Colombia Emerald Loose Stone Weighing 4.35 Carats
By OGI Ltd
Located in New York, NY
Introducing our exquisite GIA certified carved Colombia Emerald loose stone, a true masterpiece of
Category

20th Century Colombian Contemporary Loose Gemstones

Materials

Emerald

1.46ct Cushion Blue Sapphire GIA Certified Sri Lanka
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Sri Lankan Loose Gemstones

Materials

Blue Sapphire

1.46ct Cushion Blue Sapphire GIA Certified Sri Lanka
1.46ct Cushion Blue Sapphire GIA Certified Sri Lanka
Free Shipping
W 0.27 in D 0.18 in L 0.22 in
3 Carat Cushion Greenish Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Cushion shape 3.01-carat Natural Greenish Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire

20.29ct Cushion Aquamarine GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Aquamarine The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

20.29ct Cushion Aquamarine GIA Certified
20.29ct Cushion Aquamarine GIA Certified
Free Shipping
W 0.77 in D 0.46 in L 0.62 in
15.84ct Cushion Aquamarine GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Aquamarine The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

15.84ct Cushion Aquamarine GIA Certified
15.84ct Cushion Aquamarine GIA Certified
Free Shipping
W 0.8 in D 0.32 in L 0.59 in
5.79ct Cushion Morganite GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Morganite The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Morganite

5.79ct Cushion Morganite GIA Certified
5.79ct Cushion Morganite GIA Certified
Free Shipping
W 0.45 in D 0.29 in L 0.45 in
16.13ct Cushion Aquamarine GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Aquamarine The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Aquamarine

16.13ct Cushion Aquamarine GIA Certified
16.13ct Cushion Aquamarine GIA Certified
Free Shipping
W 0.79 in D 0.36 in L 0.52 in
Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
Located in Toronto, Ontario
What a Beautiful 3.03 Cornflower Blue Sapphire Description: One Loose Blue Sapphire Report
Category

2010s Malagasy Loose Gemstones

Materials

Blue Sapphire, Sapphire

Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
Vivid Cornflower Blue Sapphire 3.03ct Cushion GIA Certified
Free Shipping
W 0.27 in D 0.23 in L 0.34 in
47.7ct Cushion Sugarloaf Cabochon Yellowish Green Peridot GIA Certified
Located in Toronto, Ontario
The GIA report reads as follows: GIA Report Number: 2221341846 Shape: Cushion Sugarloaf Cabochon
Category

2010s Loose Gemstones

Materials

Peridot

1 1/3 Carat Cushion Blue Sapphire GIA
Located in San Francisco, CA
This Cushion shape 1.28-carat Natural Blue color sapphire GIA certified has been hand-selected by
Category

21st Century and Contemporary Sri Lankan Loose Gemstones

Materials

Blue Sapphire

2 Carat Cushion Greenish Blue Sapphire GIA Unheated
Located in San Francisco, CA
This Cushion shape 2.06-carat Natural Greenish Blue color sapphire GIA certified has been hand
Category

21st Century and Contemporary Loose Gemstones

Materials

Blue Sapphire, Green Sapphire

Unheated 10.78 Carat Ceylon Yellow Sapphire, Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. This cushion shaped sapphire weighs 10.78 carats and measures 18.98 x 15.22 x 8.96 millimeters. It has
Category

21st Century and Contemporary Sri Lankan Artisan Loose Gemstones

Materials

Sapphire, Yellow Sapphire

Radiant Cushion 5.12ct Ideal Cut Natural Diamond - GIA Certified
Located in רמת גן, IL
Cushion 5.12 ct Ideal Cut Natural Diamond - GIA Certified Discover the epitome of timeless
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Magnificent 1.20 ct Ideal Cut Cushion Diamond - GIA Certified
Located in רמת גן, IL
Magnificent 1.20 ct Ideal Cut Cushion Diamond - GIA Certified Discover the pinnacle of diamond
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1.9ct Cushion Sugarloaf Cabochon Green Emerald GIA Certified Colombia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Colombian Loose Gemstones

Materials

Emerald

GIA 10.07 Carat Natural Yellow Cushion Shape Diamond
Located in Great Neck, NY
GIA fancy yellow cushion shape diamond weighing 10.07 carats. Treated Clarity
Category

2010s American Loose Gemstones

Materials

Diamond, Yellow Diamond, 14k Gold, White Gold

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Cushion Gia Loose For Sale on 1stDibs

Surely you’ll find the exact cushion gia loose you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using gold, platinum and 18k gold. 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 cushion gia loose may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Finding an appealing cushion gia loose — no matter the origin — is easy, but Sarosi By Timeless Gems, Merkaba and Emilio! each produced a popular version that is worth a look. A cushion gia loose can make for a versatile accessory, but a selection from our variety of 162 diamond versions can add an especially stylish touch. See these pages for a cushion cut iteration of this accessory, while there are also brilliant cut cut and round cut cut versions available here, too. If you’re browsing our inventory for a cushion gia loose, 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 Cushion Gia Loose?

Prices for a cushion gia loose can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $4,000,000, while this accessory, on average, fetches $4,050.

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.