$280Sale Price|20% Off
2.40 Carat Pretty Loose Hessonite Garnet Trillion Cut Gem For Jewellery Making
Located in Peshawar, PK
Loose Hessonite Garnet Weight: 2.40 Carats Dimension: 8.2 x 8.2 x 5 Mm Colour: Orange Cut: Trillion Certificate: On Demand Hessonite garnet, also known as cinnamon stone or gomedh...
Hessonite
$280Sale Price|20% Off
AAA Quality 7.20 Carat Loose Electric Blue Topaz Trillion Cut from Brazil
Located in Peshawar, PK
Gemstone Type : Faceted Electric Blue Topaz Weight : 7.20 Carats Dimensions : 12.1x12.6x7.9 Mm Origin : Brazil Clarity : Eye Clean Shape: Trillion Color: Blue Certificate: On Demand...
Topaz, Blue Topaz
$400Sale Price|20% Off
10.50 Carat Adorable Loose London Blue Topaz Pair Trillion Shape Gem For Earring
Located in Peshawar, PK
Loose London Blue Topaz Pair Weight: 10.50 Carats Dimension: 10.8 x 10.8 x 6.5 Mm And 11 x 11 x 6.8 Mm Origin: Brazil Shape: Trillion Color: Deep Blue Certificate: On Customer Deman...
Blue Topaz
$232Sale Price|20% Off
Genuine 9.0 Carat Trillion Cut Loose Blue Topaz from Brazil Available for Sell
Located in Peshawar, PK
Gemstone Type : Faceted Blue Topaz Weight : 9.0 Carats Dimensions : 12.8x14.4x9.1 Mm Origin : Brazil Clarity : Eye Clean Shape: Trillion Color: Blue Certificate: On Demand Blue Topa...
Topaz, Blue Topaz
$195Sale Price / set|30% Off
Natural Light Green Peridot 5.55 Carat Cushion & Trillion Cut Loose Gemstones
Located in Peshawar, PK
Light Green Natural Peridot Loose Gemstones for Ring, Earrings, Necklace Pendant or any other Jewelry Setting- from Supat Mine, Kohistan Pakistan!!
Peridot
$16,970Sale Price|20% Off
1 Rubelite fac. 17.90c. trillion shape
By Thomas Leyser
Located in Idar-Oberstein, DE
This Rubelite Tourmaline has 17,90c.. It is facetted in trillion shape and the size is 12,5x13mm. The color can be described as very intensiv red, with small and almost unvisible, na...
Rubelite
Elongated Trillion Cut Ametrine 10.25 Carat
By Gilt Gemstone
Located in Peshawar, PK
Loose Ametrine Weight: 10.25 Carats Dimension: 21 x 14.8 x 8.3 Mm Origin: Bolivia Shape: Elongated Trilliant Color: Purple & Yellow Treatment: Non Ametrine is a naturally occu...
Amethyst, Citrine, Other
Natural Aquamarine Beryl Gemstone: 2.54 CT Trillion Cut
Located in Peshawar, PK
Hardness : 7.5-8 Origin : Madagascar Shape : Trillion Cut Color : Crystal Blue Clarity : Loupe Clean Weight : 2.54 Carats Dimensions : 9.5 * 8.5 * 6 MM Treatment : Heat Family : Ber...
Aquamarine
Trillion Cut Amethyst Gemstone: 17.65 Carat February Birthstone
Located in Peshawar, PK
weight - 17.65 Carats Dimension - 18.9*18.9*11.2 mm Shape : Fancy Blader Cut Color : Pinkish Purple / Deep Purple Clarity : Flawless Treatment : Natural Origin : Brazil Hardness : 7 ...
Amethyst
Natural Aquamarine Beryl Gemstone: 2.85 Carat Fancy Trillion Cut
Located in Peshawar, PK
Hardness : 7.5-8 Origin : Madagascar Shape : Fancy Trillion Cut Color : Crystal Blue Clarity : Clean Weight : 2.85 Carats Dimensions : 10 * 9.5 * 6 MM Treatment : Heat Family : Bery...
Aquamarine
A Natural Trillion Cut 2.4 Carats Spessartite Garnet
Located in Khet Bang Rak, 10
This gemstone is a natural Spessartite garnet weighing 2.4 carats, cut in a trillion shape. Trillion cuts are valued for their bold geometry and are less common than traditional cuts...
Garnet
Natural Amethyst Gemstone: 15.00 Carat Deep Purple Trillion Cut
Located in Peshawar, PK
weight - 15.00 Carats Dimension - 17.5*17*10.5 mm Shape : Trillion Cut Color : Purple / Deep Purple Clarity : Flawless Treatment : Natural Origin : Brazil Hardness : 7 Family : Quart...
Amethyst
11.47 Carat Modified Trillion Cut Peridot From Pakistan
Located in New York, NY
This modified trillion cut peridot from Pakistan displays an olive green hue and good clarity with a chromite inclusion. The very large crystal of chromite is eye-visible and a fasci...
Peridot
$2,399Sale Price|20% Off
GIA Certified 1-Carat Trillion Cut Natural Diamond
Located in New York, NY
ITEM DESCRIPTION Stone Shape: Trillion Diamond Weight: 1 Carat Color: U-V Measurements: 6.33 x 7.36 x 2.75 mm Symmetry: Good Polish: Excellent Fluorescence: Faint Certifying Lab: GI...
Diamond
Natural Madeira Citrine Gemstone Trillion Cut Deep Orange with Red Undertones
Located in Peshawar, PK
This exceptional natural Madeira citrine showcases a vibrant deep orange to burnt amber hue, often described in the trade as cognac orange, pumpkin spice, or fiery sunset orange quar...
Citrine
$307Sale Price|20% Off
Blader Trillion Cut Amethyst Gemstone: 37.05 Carats, February Birthstone
Located in Peshawar, PK
This exquisite Amethyst gemstone from Brazil showcases the timeless beauty and mystique for which the Quartz family is celebrated. Expertly fashioned into a striking fancy cut, the s...
Amethyst
AIG Certified Natural London Blue Topaz Gemstone: 79.70 Carat Trillion Cut
Located in Peshawar, PK
Wight : 79.70 Carats Dimensions : 27.20 * 26.61 * 18.97 mm Color : Lodon Blue Shape : Trillion Cut Clarity : Clean Treatment : Heat Origin : Brazil Hardness : 8 This striking **Lon...
Topaz
Natural Topaz Gemstone: 4.83 Carat Golden Trillion Cut From Pakistan
Located in Peshawar, PK
Wight - 4.83 Carats Dimensions : 10.5*10.5*6 mm Color : Golden Yellow Shape : Fancy Cut Clarity : SI Clean Treatment : Heat Origin : Pakistan Hardness : 8 This fancy-cut Golden Yel...
Topaz
GIA certified 2.08 ct Trillion — H / SI2 VG VG faint fluorescent.
Located in Ramat Gan, IL
GIA certified 2.08 ct Trillion — H / SI2 VG VG faint fluorescent. Some diamonds just perform. Others tell a story. This trillion belongs to the second category. 9.46 x 10.21mm of f...
Diamond, White Diamond
9 Carats Trillion Cut Electric Blue Topaz for Fine Jewellery from Brazil
Located in Peshawar, PK
Gemstone Details: Faceted Electric Blue Topaz Weight 9.3 carats Circumference 13.8 mm Depth 8.9 mm Origin Brazil Treatment Typically Heated Shape and Cut Triangle Trillion ...
Blue Topaz
Loose Tanzanite - Trilliant cut - 11.95cts
Located in SYDNEY, AU
A loose trilliant cut vivid blue tanzanite of 11.95ct This stone is available to be set into the piece of your choice or kept to be admired on its own.
Tanzanite
$156Sale Price|20% Off
9.05 Carats Orange Citrine Stone Trillion Cut Natural Brazilian Gemstone
Located in Bangkok, TH
Weight 9.05 carats Dimensions 15.6x15.6x9.9mm Treatment none Origin Brazil Clarity eye clean Shape triangular Cut trilliant This exquisite 9.05 carat citrine gemstone, sourc...
Citrine
$320Sale Price|20% Off
11.05 Carat Faceted Blue Topaz Trillion Cut Gem For Necklace
Located in Peshawar, PK
Loose Blue Topaz Weight: 11.05 Carats Dimensions: 13.9 x 13.9 x 9.4 Mm Origin: Brazil Shape: Trillion Color: Blue Certificate: On Demand Benefits Of Wearing Blue Topaz Stone: It he...
Blue Topaz
$88Sale Price|20% Off
0.66 Carats Green Tourmaline Stone Trillion Cut Natural Afghan Gemstone
Located in Bangkok, TH
Weight 0.66 carats Dimensions 5.9x5.8x3.6 mm Treatment none Origin Afghanistan Clarity eye clean Shape triangular Cut trilliant The Green Tourmaline Stone you possess is a ...
Tourmaline
Fancy Cut Natural Loose Peridot Gemstone
Located in Brisbane, AU
Loose Peridot Weight: 1.90 Carats Dimension: 8.4 x 8.4 x 5.2 Mm Shape: Trillion Colour: Green Origin: Mansehra, Pakistan Treatment: None Certificate: On Demand .
Peridot, Other
14.75 Carats Pink Tourmaline Trillion 36 Pcs Faceted Cut stone Natural gemstone
Located in Jaipur, RJ
14.75 Carats Pink Tourmaline Trillion 36 Pcs Faceted Cut stone Natural gemstone Gemstone - Tourmaline Weight - 14.75 Carats Shape - Trillion Size - 5x2.5 MM Pieces - 36
Tourmaline
$874Sale Price|34% Off
Lagoon Green Natural Tourmaline Gemstone 2.70 Ct Trillion Cut for Necklace, Ring
Located in Peshawar, PK
Perfect for a variety of jewelry settings, this loose gemstone is ideal for creating a bespoke necklace pendant, a unique ring, or any other custom jewelry piece that requires a touc...
Tourmaline
$759Sale Price|20% Off
Green Natural Tourmaline Gemstone 2.90 Ct Trillion Cut for Ring, Pendant Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Natural Tourmaline PIECE(S): 1 WEIGHT: 2.90 Carats SHAPE: Trillion Cut SIZE (MM): 8.67 x 9.07 x 5.92 COLOR: Green CLARITY: Approx Eye Clean TREATMENT: None ORIGIN: Af...
Tourmaline
$583Sale Price|20% Off
Green Natural Tourmaline Gemstone 2.25 Ct Trillion Cut for Ring, Pendant Jewelry
Located in Peshawar, PK
GEMSTONE TYPE: Natural Tourmaline PIECE(S): 1 WEIGHT: 2.25 Carats SHAPE: Trillion Cut SIZE (MM): 7.97 x 8.26 x 5.86 COLOR: Green CLARITY: Approx Eye Clean TREATMENT: None ORIGIN: Af...
Tourmaline
$232Sale Price|20% Off
6.15 Carats Adorable Green Amethyst Trillion Cut Gemstone For Jewellery Making
Located in Peshawar, PK
Loose Green Amethyst Weight: 6.15 Carats Dimension: 12.2 x 12.1 x 8.1 Mm Colour: Green Origin: Brazil Certificate: On Demand Shape : Trillion Green amethyst, also known as prasiol...
Amethyst
2.90 Carats Tourmaline Trillion 1 Pcs Faceted Cut stone Top Quality Natural Gems
Located in Jaipur, RJ
2.90 Carats Tourmaline Trillion 1 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 2.90 Carats Shape - Trillion Size - 10.5x5 MM Pieces - 1
Tourmaline
6.45 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem
Located in Jaipur, RJ
6.45 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 6.45 Carats Shape - Trillion Size - 9.5x10 MM Pieces - 2
Tourmaline
6.10 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural Gems
Located in Jaipur, RJ
6.10 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 6.10 Carats Shape - Trillion Size - 10 MM Pieces - 2
Tourmaline
2.85 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural Gems
Located in Jaipur, RJ
2.85 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 2.85 Carats Shape - Trillion Size - 8x5 MM Pieces - 2
Tourmaline
2.80 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem
Located in Jaipur, RJ
2.80 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 2.80 Carats Shape - Trillion Size - 3.5x8 MM Pieces - 2
Tourmaline
4.70 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural Gems
Located in Jaipur, RJ
4.70 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 4.70 Carats Shape - Trillion Size - 8.5x6 to 9x4.5 MM Pieces - 2
Tourmaline
6.00 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem
Located in Jaipur, RJ
6.00 Carats Tourmaline Trillion 2 Pcs Faceted Cut stone Top Quality Natural gem Gemstone - Tourmaline Weight - 6.00 Carats Shape - Trillion Size - 9.5x5 To 10x5.5 MM Pieces - 2
Tourmaline
Natural 0.74ct Gia L SI2 Triangular Cut Loose Diamond
Located in Houston, TX
One loose diamond described as follows... In excellent condition. Pre-owned in excellent condition. Might show minor signs of wear. One (1) modified triangle cut natural diamond: ...
Diamond
$320Sale Price|20% Off
7.15 Carat Gorgeous Faceted London Blue Topaz Trillion Shape Gem For Jewellery
Located in Peshawar, PK
Loose London Blue Topaz Weight: 7.15 Carats Dimension: 11.6 x 11.8 x 7.8 Mm Origin: Brazil Shape: Trillion Color: Deep Blue Certificate: On Customer Demand London Blue Topaz is a...
Topaz
$640Sale Price|20% Off
Rarest Natural Loose 0.40 Carat Haüyne \ Haüynite Gemstone
Located in Peshawar, PK
Loose Hauyne / Hauynite Weight: 0.40 Carats Dimension: 6 x 4.7 x 3.2 Mm Origin: Badakhshan Afghanistan Shape: Trillion Color: Blue Family: Sodalite Treatment: Non Certificate: On De...
Other
$240Sale Price|20% Off
2.75 Carats Natural Loose Peridot Trilliant Shape Gemstone
Located in Peshawar, PK
Loose Peridot Weight: 2.75 Carats Dimension: 9.1x9.1x5 Mm Origin: Pakistan Shape: Trillion Color: Green Certificate: On Demand Peridot is a captivating and unique gemstone known f...
Peridot
$600Sale Price|20% Off
3.95 Carat Natural Loose Rubelite Tourmaline Trilliant Cut Afghan Gemstone
Located in Bangkok, TH
Weight 3.95 carat Dimensions 10.6x10.6x6.3 mm Treatment None Origin Afghan Clarity SI Shape Cut Trilliant This 3.95 Carat Natural Loose Rubelite Tourmaline is a vibrant gemsto...
Rubelite, Tourmaline
Natural Pakistan Aquamarine Gemstone 9.59 Carat Fancy Cut – Loose Sky Blue
Located in Peshawar, PK
Discover the breathtaking beauty of this Natural Pakistan Aquamarine weighing an impressive 9.59 carats. Expertly fashioned in an elegant Fancy Cut, this gemstone showcases a captiva...
Aquamarine
$316Sale Price|20% Off
Reddish Pink Natural Rubellite Tourmaline Necklace Pendant Loose Gemstone 3.95Ct
Located in Peshawar, PK
Reddish Pink Natural Rubellite Tourmaline Loose Gemstone for Ring, Necklace Pendant, Bracelet or any other Jewelry Setting!!
Rubelite, Tourmaline
$400Sale Price|20% Off
10.35 Carat Natural Loose Ametrine Trilliant Shape Gemstone
Located in Peshawar, PK
Faceted Ametrine Weight: 10.35 Carats Dimension: 21 x 14.5 x 8.2 Mm Shape: Trilliant Color: Purple & Yellow Treatment: Non Certificate: On Client Demand . Ametrine is a unique and ...
Amethyst, Citrine
3.00 Carat Natural Loose Fanta Color Spessartite Garnet Trilliant Cut Gemstone
Located in Bangkok, TH
Weight 3.00 carat Dimensions 9.6x9.2x6.1mm Treatment None Origin African Clarity SI Shape Cut Trilliant This 3.00 Carat Natural Loose Fanta Color Spessartite Garnet displays ...
Garnet
$280Sale Price / set|20% Off
4.25 Carats Natural Loose Tourmaline Pieces For Jewellery Making
Located in Peshawar, PK
Loose Tourmaline Weight: 4.25 Carats Size: 1.85 , 1.35 , 0.95 Carats Origin: Kunar Afghanistan Shape: Emerald, Trillion, Cushion Treatment: Non Color: Pink , Green & Red Tourmali...
Tourmaline
1.65 Carat Natural Loose Apple Green Peridot Trilliant Cut Pakistani Gemstone
Located in Bangkok, TH
Weight 1.65 carat Dimensions 8.2x8.2x5.2 mm Treatment None Origin Pakistan Clarity SI Shape Cut Trilliant This 1.65 Carat Natural Loose Apple Green Peridot features a bright...
Peridot
11.40 Carat Natural Loose Pink Kunzite Stone Trilliant Cut Afghan Gemstone
Located in Bangkok, TH
Weight 11.40 carat Dimensions 17x12.1x9.8mm Treatment None Origin Afghanistan Clarity Eye Clean Shape Cut Trilliant This 11.40 Carat Natural Loose Pink Kunzite is a captivating ...
Kunzite
$138Sale Price / set|30% Off
Bluish Green & Blue Natural Tourmaline Loose Gemstones 2.15Ct for Jewelry Making
Located in Peshawar, PK
Bluish Green & Blue Natural Tourmaline Loose Gemstones for Ring, Necklace Pendant or any other Jewelry Setting-Trillion Cut!!
Tourmaline
Vibrant Green Natural Peridot 5.84 Carat Calf’s Head Cut Loose Gemstones Parcel
Located in Peshawar, PK
Vibrant Green Natural Peridot Calf’s Head Cut Loose Gemstones Parcel for Jewelry Set— Earth-Mined Green Peridot, Top Quality August Birthstone Crystal, Ring, Earrings, Pendant, Neckl...
Peridot
$288Sale Price|20% Off
19.60 Carat Natural Loose Purple Amethyst Fancy Trilliant Cut Brazilian Gemstone
Located in Bangkok, TH
WEIGH: 19.60 Carats DIMENSIONS: 19.1x19.1x11.7mm CLARITY: Loupe Clean SHAPE: Trillion CUT: Frosted Trillion ORIGIN: Brazil TREATMENT: None This 19.60 Carat Natural Loose Purple A...
Amethyst
$736Sale Price|20% Off
2.00 Carat Natural Loose Red Spinel Stone Trilliant Cut Burmese Gemstone
Located in Bangkok, TH
Weight 2.00 carat Dimensions 8.8x8.8x3.9mm Treatment None Origin Burmese Clarity Eye Clean Shape Cut Trilliant This 2.00 Carat Natural Loose Red Spinel from Burma showcases ...
Spinel
$164Sale Price / set|30% Off
Lime Green Natural Peridot 5.31 Carat Calf’s Head Cut Loose Gemstones Parcel
Located in Peshawar, PK
Lime Green Natural Peridot Calf’s Head Cut Loose Gemstones Parcel for Jewelry Set— Earth-Mined Green Peridot, Top Quality August Birthstone Crystal, Ring, Earrings, Pendant, Necklace...
Peridot
$267Sale Price / set|30% Off
Vivid Green Natural Peridot 7.65 Carat Calf’s Head Cut Loose Gemstones Parcel
Located in Peshawar, PK
Vivid Green Natural Peridot Pear Cut Loose Gemstones Parcel for Jewelry Set— Earth-Mined Green Peridot, Top Quality August Birthstone Crystal, Ring, Earrings, Pendant, Necklace, Cust...
Peridot
Australian Loose Solid Opal of 7.50ct (18mm x 15mm). Lightning Ridge.
Located in MELBOURNE, AU
TO U.S.A BUYERS: DON’T SWEAT ABOUT 15% TRUMP’S TARIFF - WE COVER IT BY GIVING YOU 15% DISCOUNT! This Australian Loose Solid Opal is of impressive 7.50ct (18mm x 15mm) of unusual ...
Opal
$128Sale Price|20% Off
1.00 Carat Loose Deep Sea Blue Natural Aquamarine Gemstone "Ocean's Reflection
Located in Bangkok, TH
Weight 1.00 carat Dimensions 7.1x7.1x4.6mm Treatment None Origin Pakistan Clarity Eye Clean Shape Cut Trillion NA This 1.00-carat natural Aquamarine gemstone, titled "Ocean’s Refle...
Aquamarine
$216Sale Price|20% Off
1.10 Carat Natural Loose Purple Kunzite Stone Trilliant Cut Afghan Gemstone
Located in Bangkok, TH
Weight 1.10 carat Dimensions 6.2x7.2x4.3mm Treatment None Origin Afghan Clarity VVS Shape Cut Trilliant This 1.10 Carat Natural Loose Purple Kunzite displays a delicate viole...
Kunzite
$72Sale Price|20% Off
1.50 Carat Natural Loose Purple Amethyst Stone Trilliant Cut Brazilian Gemstone
Located in Bangkok, TH
Weight 1.50 carat Dimensions 8.8x8.8x5.3mm Treatment None Origin Brazil Clarity Loup Clean Shape Cut Trilliant This 1.50 Carat Natural Loose Purple Amethyst Stone features a...
Amethyst
$144Sale Price|20% Off
1.50 Carat Natural Loose Purplish Red Malawi Garnet Gemstone For Jewelry
Located in Bangkok, TH
Natural Purplish Red Garnet Gemstone, Available For Sale at Wholesale Price Natural High Quality 1.50 Carats Unheated Garnet Gemstone From Malawi. Product Information: GEMSTONE ...
Garnet
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.