3.34ct AAA+ Vivid Bluish Colombian Emerald 9x9mm Asscher Cut Genuine May
Located in Jupiter, FL
Stone: Emerald Weight: 3.34-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Bluish Green Measurements: 9.0mm x 8.85mm x 7.27mm Geographic Origin: Colomb...
Emerald
4.22ct Vivid Muzo Green Colombian Emerald 9x9mm Asscher Cut Genuine May
Located in Jupiter, FL
Stone: Emerald Weight: 4.22-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Muzo Green Measurements: 8.98mm x 8.96mm x 7.42mm Geographic Origin: Colombi...
Emerald
4.33ct Bluish Green Colombian Emerald 10x10mm Asscher Cut Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 4.33-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Bluish Green Measurements: 10.32mm x 10.10mm x 6.22mm Geographic Origin: Colombia ...
Emerald
6.25ct Apple Green Asscher Cut Colombian Gem 11x11 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 3.55-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Green Measurements: 11.0mm x 10.48mm x 7.75mm Geographic Origin: Colombia T...
Emerald
7.41ct Vivid Muzo Green Asscher Cut Colombian Emerald Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 7.41-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Green Measurements: 11.6mm x 11.5mm Geographic Origin: Colombia Treatment: N...
Emerald
2.65ct Dark Green Asscher Cut Brazilian Emerald 8x8 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 2.65-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Vivid Dark Green Measurements: 8.2mm x 8.05mm Geographic Origin: Brazil Treatment:...
Emerald
2.95ct Rich Medium Green Asscher Cut Muzo Emerald Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 2.95-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Vivid Dark Green Measurements: 8.65mm x 8.31mm Geographic Origin: Colombia Treatme...
Emerald
5.32ct Glowy Green Asscher Cut Muzo Emerald 10x10 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 5.32-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Light Green Measurements: 10.35mm x 10.11mm x 7.16mm Geographic Origin: Colombia T...
Emerald
1.79ct Crystalline Green Asscher Cut Colombian Gem 7.5x7 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 1.79-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Bluish Green Measurements: 7.53mm x 6.89mm x 5.56mm Geographic Origin: Colombia Tr...
Emerald
11.64ct Earthy Green Asscher Cut Colombian Gem 14x14 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 11.64-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Bluish Green Measurements: 14.40mm x 13.68mm x 8.16mm Geographic Origin: Colombia...
Emerald
2.98ct Glowing Vivid Green Colombian Emerald Asscher Cut Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 2.98-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Bluish Green Measurements: 8.48mm x 8.10mm x 7.09mm Geographic Origin: Colom...
Emerald
1.97ct Spready Muzo Green Colombian Emerald 8.5x8.5mm Asscher Cut May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 1.97-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent-Very Good Color: Vivid Green Measurements: 8.44mm x 8.26mm x 4.03mm Geographic Origin: Co...
Emerald
1.84ct Square Green Colombian Emerald 8x8mm Asscher Cut Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 1.84-carats Shape: Asscher Cut Clarity: Semi-Transparent Luster: Very Good Color: Medium Green Measurements: 7.87mm x 7.59mm x 4.89mm Geographic Origin: Colomb...
Emerald
1.24ct Bluish Green Asscher Cut Colombian Emerald 6.7x6.7 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 1.24-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Muzo Yellowish Green Measurements: 6.75mm x 6.69mm x 4.48mm Geographic Origin: Col...
Emerald
3.28ct Spring Green Asscher Cut Muzo Emerald 8.6x8.2 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 3.28-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Yellowish Green Measurements: 8.64mm x 8.19mm x 6.94mm Geographic Origin: C...
Emerald
9.03ct HUGE Green Asscher Cut Colombian Emerald 12.5x12.5 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 9.03-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Deep Bluish Green Measurements: 12.52mm x 12.47mm x 9.33mm Geographic Origin: Colo...
Emerald
13.46ct Dark Green Asscher Cut Colombian Gem 14.5x14 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 13.46-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Vibrant Yellowish Green Measurements: 14.49mm x 13.81mm x 11.33mm Geographic Orig...
Emerald
5.56ct Spring Green Asscher Cut Colombian Gem 10.6x10.6 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 5.56-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Yellowish Green Measurements: 10.69mm x 10.62mm x 8.39mm Geographic Origin:...
Emerald
16.34tcw 12.2x12 Matching Light Green Colombian Emeralds - Asscher Cut Rare May
Located in Jupiter, FL
Stone: Emerald Total Weight: 16.34-tcw Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Minty Light Green Measurements: 12.25mm x 12.04mm x 8.95mm // 12.21mm x 11.94m...
Emerald
10.02tcw Matching Asscher Cut Colombian Emerald Pair 10x10 Genuine Loose Gems
Located in Jupiter, FL
Stone: Emerald Total Weight: 10.02-tcw Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Yellowish Medium Green Measurements: 10.10mm x 9.56mm x 7.81mm // 10.12mm x 9....
Emerald
2.92ct Chipped Medium Green Colombian Emerald Asscher Cut Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 2.92-carats Shape: Asscher Cut Clarity: Semi-Transparent Luster: Good Color: Medium Green Measurements: 8.43mm x 7.76mm x 6.99mm Geographic Origin: Colombia Tr...
Emerald
4.53ct Muzo Green Colombian Emerald 10x10mm Asscher Cut Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 4.53-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Bluish Green Measurements: 9.93mm x 9.67mm x 7.50mm Geographic Origin: Colombia Tr...
Emerald
Flamingo Color Afghan Tourmaline, 2.89ct Asscher Cut, By True Gems
By True Gems
Located in บางรัก, TH
Flamingo color afghan tourmaline sku31 Weight: 2.89 carats Color: pink, orange Origin: Afghanistan. Bright and unusual color
Tourmaline
Faceted 4.8ct Spessartite Orange Garnet, Asscher Cut, By True Gems
By True Gems
Located in บางรัก, TH
Faceted spessartite orange garnet sku69 From Nigeria Size: 9.7x8.8x5.5 mm Weight: 4.8 ct
Garnet
1.53 Carat 8x8 Yellowish Green Colombian Emerald - Rare Asscher Cut May
Located in Jupiter, FL
Stone: Emerald Weight: 1.53-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Yellowish Green Measurements: 7.91mm x 7.69mm x 3.83mm Geographic Origin: C...
Emerald
14.55 Carats Perfect Asscher Cut Loose Purple Amethyst Brazil Mine
Located in Brisbane, AU
Natural Amethyst Weight: 14.55 Carats Dimension: 14.8x14.7x11.3 Mm Color: Purple Treatment: Non Certificate: On Customer Demand Amethyst is a striking purple variety of quartz, va...
Amethyst
$735Sale Price|25% Off
4.15 Carat Natural Loose Intense Green Zambian Emerald Stone Asscher Cut Gem
Located in Bangkok, TH
Expertly crafted in a sophisticated Asscher cut, the gem showcases crisp step facets and a geometric symmetry that enhances its depth and natural allure.
Emerald
$680Sale Price|20% Off
3.00 Carat Natural Loose Unique Color Tourmaline Pair Asscher Cut African Gems
Located in Bangkok, TH
Weight 3.00 carat Dimensions 6.3x6.3x5.3mm Treatment None Origin Africa Clarity VVS Shape Cut Asscher This exquisite 3.00 carat tourmaline pair showcases a rare and unique c...
Tourmaline
$312Sale Price|20% Off
8.85 Carat Natural Loose Madeira Fire Citrine Fancy Asscher Cut Brazilian Gem
Located in Bangkok, TH
Expertly fancy Asscher cut, it features crisp step facets and perfect symmetry that enhance its fiery sparkle and depth.
Citrine
$1,344Sale Price|20% Off
1.60 Carat Asscher Cut White Near Colorless Sapphire GIA Certified Unheated
Located in San Francisco, CA
This Asscher shape 1.60-carat Natural White Near Colorless GIA certificate number: 2205624597 has been hand-selected by our experts for its top luster and unique color. We can custo...
Sapphire
$360Sale Price|20% Off
4.75 Carat Natural Loose Apple Green Peridot Stone Asscher Cut Pakistani Gem
Located in Bangkok, TH
Expertly fashioned into a striking Asscher cut, the gemstone reveals exceptional clarity and brilliance, with its step-cut facets creating a captivating play of light.
Peridot
2.84 Carat 9x9 Vivid Muzo Green Loose Colombian Emerald - Asscher Cut May
Located in Jupiter, FL
Stone: Emerald Weight: 2.84-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Muzo Green Measurements: 9.01mm x 8.87mm x 5.77mm Geographic Origin: Colombi...
Emerald
10.01 Carat 12.5x12.5 Vivid Dark Green Zambian Emerald - Asscher Cut May Births
Located in Jupiter, FL
Stone: Emerald Weight: 10.01-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Dark Green Measurements: 12.56mm x 12.47mm x 8.91mm Geographic Origin: Zamb...
Emerald
Vivacious Dark Green 2.68 Carat Asscher Cut Muzo Colombian Emerald Gem - May
Located in Jupiter, FL
Stone: Emerald Weight: 2.68-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Dark Green Measurements: 8.60mm x 8.50mm x 5.53mm Geographic Origin: Colombi...
Emerald
1.78ct AAA+ Captivating Muzo Green Asscher Cut Colombian Gem 7x7 Genuine May
Located in Jupiter, FL
Stone: Emerald Weight: 1.78-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Alpine Muzo Green Measurements: 7.22mm x 7.10mm x 5.69mm Geographic Origin: Colomb...
Emerald
1.80ct AAA+ Muzo Green Asscher Cut Colombian Gem 7.3x7.3 Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 1.80-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent Color: Vivid Muzo Green Measurements: 7.32mm x 7.26mm x 6.10mm Geographic Origin: Colombi...
Emerald
3.37 Carat VS Jyotish Colombian Emerald - Asscher Cut Square May Birthstone Gem
Located in Jupiter, FL
Stone: Emerald Weight: 3.37-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Light Green Measurements: 8.41mm x 8.25mm x 6.96mm Geographic Origin: Colom...
Emerald
1.74 Carat Freckled Asscher Cut Colombian Emerald - Eye Clean May Birthstone Gem
Located in Jupiter, FL
Stone: Emerald Weight: 1.74-carats Shape: Asscher Cut Clarity: Transparent, Carbon Freckles Luster: Very Good Color: Light Pastel Green Measurements: 7.89mm x 7.36mm x 4.13mm Geograp...
Emerald
Vivid 3.01 Carat Muzo Asscher Cut Colombian Emerald with Clipped Corners - May
Located in Jupiter, FL
Stone: Emerald Weight: 3.01-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent-Very Good Color: Vivid Green Measurements: 8.75mm x 8.41mm x 6.71mm Geographic Origin: Co...
Emerald
Deep Bluish Green 4.75 Carat Asscher Cut Colombian Emerald Gem - May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 4.75-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Deep Bluish Green Measurements: 10.33mm x 10.18mm x 6.52mm Geographic Origin: Colo...
Emerald
Minty 2.57 Carat Art Deco Asscher Cut Colombian Emerald - May Birthstone Gem
Located in Jupiter, FL
Stone: Emerald Weight: 2.57-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Minty Medium-Light Green Measurements: 8.65mm x 8.29mm x 6.69mm Geographic Origin:...
Emerald
2.88ct GIA Certified Vivid Muzo Green Asscher Cut Emerald Genuine May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 2.88-carats Shape: Asscher Cut Clarity: Transparent Luster: Excellent-Very Good Color: Vivid Muzo Green Measurements: 8.79mm x 8.52mm x 6.20mm Geographic Origi...
Emerald
1.78 Carat 7.5x7 Limish Green Asscher Cut Colombian Emerald - May Birthstone Gem
Located in Jupiter, FL
Stone: Emerald Weight: 1.78-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Medium Yellowish Green Measurements: 7.48mm x 7.19mm x 4.93mm Geographic Origin: C...
Emerald
$400Sale Price|20% Off
14.05 Carat Natural Loose Citrine Perfect Asscher Cut Gem For Necklace
Located in Peshawar, PK
Loose Citrine Weight: 14.05 Carats Dimension: 14.3 x 14.3 x 11.1 Mm Origin: Brazil Treatment: Non Certficate: On Demand Cut : Asscher Citrine, a radiant and versatile gemstone, e...
Citrine
Forest Green 4.34 Carat Asscher Cut Muzo Colombian Emerald Gem - May Birthstone
Located in Jupiter, FL
Stone: Emerald Weight: 4.34-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good Color: Dark Green Measurements: 9.55mm x 8.78mm x 6.92mm Geographic Origin: Colombia Trea...
Emerald
$240Sale Price|20% Off
Asscher Cut Loose Madeira Citrine Square Shape 3.60 Carats From Brazil
Located in Peshawar, PK
Loose Madeira Citrine Weight: 3.60 Carats Dimension: 8.9 x 8.9 x 7.1 Mm Origin: Brazil Colour : Orange and Yellow Shape: Square Cut: Asscher Certificate: On Demand Madeira Citrine,...
Citrine
$304Sale Price|20% Off
14.05 Carat Natural Loose Golden Topaz Asscher Cut Gem For Necklace
Located in Peshawar, PK
Loose Topaz Weight: 14.05 Carats Dimension: 13.6 x 11.3 x 9.8 Mm Origin: Skardu, Pakistan Shape: Asscher Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radian...
Topaz
$256Sale Price|20% Off
7.40 Carat Natural Loose Golden Topaz Asscher Cut Gem For Jewellery
Located in Peshawar, PK
Loose Topaz Weight: 7.40 Carats Dimension: 12.2 x 10.6 x 7.1 Mm Origin: Skardu, Pakistan Shape: Asscher Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radiant...
Topaz
$240Sale Price|20% Off
True Luxury Swiss Blue Topaz 12.80 carats Asscher Cut Natural Madagascar's Gem
Located in Bangkok, TH
Weight 12.80 carats Dimensions 12.6 x 12.6 x 9.5 mm Treatment Heated Origin Madagascar Clarity Eye Clean Shape Octagon Cut Asscher Elevate your jewelry collection with the t...
Topaz, Blue Topaz
Unheated Blue Sapphire 0.84ct Asscher Cut, Sri Lanka, By True Gems
By True Gems
Located in บางรัก, TH
Unheated faceted blue sapphire sku217 Mining location: Sri Lanka Weight: 0.84 ct Size: 5.1x5.1x3.4 mm
Blue Sapphire
$94Sale Price|20% Off
Brilliance of Swiss Blue Topaz 4.60 carats Asscher Cut Natural Madagascar's Gem
Located in Bangkok, TH
Weight 4.60 carats Dimensions 8.35 x 8.35 x 7.41 mm Treatment Heated Origin Madagascar Clarity Eye Clean Shape Octagon Cut Asscher Elevate your jewelry collection with the ti...
Topaz, Blue Topaz
Intense 5.84 Carat Bluish Green Asscher Cut Colombian Emerald GIA Certified Gem
Located in Jupiter, FL
Stone: Emerald Weight: 5.84-carats Shape: Emerald Cut Clarity: Transparent Luster: Excellent-Very Good Color: Intense Bluish Green Measurements: 11.67mm x 10.55mm x 7.37mm Geographic...
Emerald
$600Sale Price|20% Off
Stunning 19.95 Carat Asscher Cut Natural Loose Golden Topaz from Pakistan
Located in Peshawar, PK
Gemstone Type : Topaz Weight : 19.95 Carats Dimensions : 14.3x13.2x10.3 mm Clarity : Eye Clean Origin : Skardu Color: Light Golden Shape: Emerald Cut: Asscher Certificate: On Demand ...
Topaz, Imperial Topaz
$312Sale Price|20% Off
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 Color: Blue Certificate: On Demand Benefits Of Wearing Blue Topaz Stone: It helps t...
Blue Topaz
1.87 Carat 8x8 Art Deco Green Colombian Emerald - Asscher Cut May Birthstone Gem
Located in Jupiter, FL
Stone: Emerald Weight: 1.87-carats Shape: Asscher Cut Clarity: Transparent Luster: Very Good-Good Color: Pastel Medium Green Measurements: 7.75mm x 7.64mm x 5.14mm Geographic Origin:...
Emerald
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 Leon Mege custom jewelers will happily work with you on a custom mounting, subject to...
Diamond
Natural Pink Sapphire Bracelets 3 sets asscher cut stone For Fine Jewelry gems
By Shree Nath Gems
Located in Jaipur, RJ
Pink Sapphire 3 Set For Bracelets asscher cutstone For Fine Jewellery gem Size & Weight : 3.00 MM - 7.64 carats 3.50 MM - 9.36 carats 4.50 MM - 11.05 carats Treatment - Heat ONLY Pie...
Pink Sapphire
$176Sale Price|20% Off
Dazzling Natural Citrine For Ring 6.30 CT Lovely Asscher Cut AAA Loupe Clean
Located in Bangkok, TH
Product Information: GEMSTONE TYPE: Dazzling Natural Citrine For Ring WEIGHT: 6.30 Carats DIMENSIONS: 11.3 x 11.3 x 9mm CLARITY: Loupe Clean SHAPE: Octagon CUT: Asscher ORIGIN: Brazi...
Citrine
Natural Light Blue Precision Cut Tourmaline Gemstone for Jewellery 6mm
Located in Peshawar, PK
Gemstone Details: Faceted Tourmaline Weight 1.30 carats Dimension 6.6*6.2*4.7 mm Origin Afghanistan Treatment None Shape and Cut Square precision Transparency Transparent Clar...
Tourmaline
$200Sale Price|47% Off
4.65 Carat Natural Loose Golden Topaz Asscher Cut Gem For Jewellery Making
Located in Peshawar, PK
Loose Topaz Weight: 4.65 Carats Dimension: 8.8 x 8.5 x 7.1 Mm Origin: Skardu, Pakistan Shape: Asscher Color: Golden Treatment: Non Certificate: On Demand Golden Topaz is a radiant ...
Topaz
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.