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AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats
AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats

AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats

$6,750

AGL Certified Gemstone Natural Corundum Pink Sapphire Weighing 2.92 Carats

By OGI Ltd

Located in New York, NY

type of precious gemstone that has been formed under the earth's crust over millions of years. The

Category

Mid-20th Century Sri Lankan Contemporary Loose Gemstones

Materials

Pink Sapphire

Opal Ethiopian 13.09Ct natural gemstone, Ethiopia, GFCO certified
Opal Ethiopian 13.09Ct natural gemstone, Ethiopia, GFCO certified

Opal Ethiopian 13.09Ct natural gemstone, Ethiopia, GFCO certified

$700

Opal Ethiopian 13.09Ct natural gemstone, Ethiopia, GFCO certified

By GRALJEWELRY

Located in Dublin, D

Natural Ethiopian Opal gemstone GFCO certified Gemstone Color: White Multicolor Gemstone Type

Category

2010s Ethiopian Loose Gemstones

Materials

Opal

GFCO certified Natural 8.44Ct Tourmaline gemstone, Heart cut, Nigeria
GFCO certified Natural 8.44Ct Tourmaline gemstone, Heart cut, Nigeria

GFCO certified Natural 8.44Ct Tourmaline gemstone, Heart cut, Nigeria

$3,479

GFCO certified Natural 8.44Ct Tourmaline gemstone, Heart cut, Nigeria

By GRALJEWELRY

Located in Dublin, D

Natural Tourmaline gemstone GFCO Laboratory certified Gemstone Color: Orange-Pink Gemstone Type

Category

2010s Nigerian Loose Gemstones

Materials

Tourmaline

44.80 carats Frosted Purple Amethyst Custom Precision Cut Brazilian Gemstone
44.80 carats Frosted Purple Amethyst Custom Precision Cut Brazilian Gemstone

44.80 carats Frosted Purple Amethyst Custom Precision Cut Brazilian Gemstone

$464Sale Price|20% Off

44.80 carats Frosted Purple Amethyst Custom Precision Cut Brazilian Gemstone

Located in Bangkok, TH

Heptagon Cut Custom Precision NA Buy 44.80 Carat Natural Frosted Purple Amethyst Gemstone – Certified

Category

21st Century and Contemporary Brazilian Modern Loose Gemstones

Materials

Amethyst

1.36 Carats Natural Blue Apatite Stone From Madagascar Apatite Gemstones
1.36 Carats Natural Blue Apatite Stone From Madagascar Apatite Gemstones

1.36 Carats Natural Blue Apatite Stone From Madagascar Apatite Gemstones

$160

1.36 Carats Natural Blue Apatite Stone From Madagascar Apatite Gemstones

Located in Bangkok, TH

, Flawless 1.36 Carats Certified Gemstone From Madagascar. Product Information : Weight: 1.36 carats

Category

21st Century and Contemporary Malagasy Modern Loose Gemstones

Materials

Apatite

Mahenge, Spinel 3.01Ct VIVID orange-PINK gemstone, Tanzania, GFCO
Mahenge, Spinel 3.01Ct VIVID orange-PINK gemstone, Tanzania, GFCO

Mahenge, Spinel 3.01Ct VIVID orange-PINK gemstone, Tanzania, GFCO

$3,500

Mahenge, Spinel 3.01Ct VIVID orange-PINK gemstone, Tanzania, GFCO

By GRALJEWELRY

Located in Dublin, D

Natural Mahenge Spinel Loose gemstone GFCO Laboratory certified Gemstone Color: VIVID orange-PINK

Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.
Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.

$2,850

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color.

By GRALJEWELRY

Located in Dublin, D

Natural Garnet Spessartite Loose gemstone 5.17 Ct., Fanta color. Colourstone certified Gemstone

Category

2010s African Loose Gemstones

Materials

Garnet

Spinel Lavender Violet 4.27Ct natural gemstone, Cushion cut, Tanzania
Spinel Lavender Violet 4.27Ct natural gemstone, Cushion cut, Tanzania

Spinel Lavender Violet 4.27Ct natural gemstone, Cushion cut, Tanzania

$2,260

Spinel Lavender Violet 4.27Ct natural gemstone, Cushion cut, Tanzania

By GRALJEWELRY

Located in Dublin, D

Natural Lavender-Violet Spinel Loose gemstone GFCO Laboratory certified Gemstone Color: Lavender

Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Purplish-pink Spinel loose gemstone 2.93 ct., Origin Tanzania
Natural Purplish-pink Spinel loose gemstone 2.93 ct., Origin Tanzania

Natural Purplish-pink Spinel loose gemstone 2.93 ct., Origin Tanzania

$1,200

Natural Purplish-pink Spinel loose gemstone 2.93 ct., Origin Tanzania

By GRALJEWELRY

Located in Dublin, D

Natural Purplish-Pink Spinel Loose gemstone From Tanzania! AGL Laboratory certified Gemstone Color

Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Moonstone Loose gemstone 3.25 ct., Oval cut, Certificate!
Natural Moonstone Loose gemstone 3.25 ct., Oval cut, Certificate!

Natural Moonstone Loose gemstone 3.25 ct., Oval cut, Certificate!

$999

Natural Moonstone Loose gemstone 3.25 ct., Oval cut, Certificate!

By GRALJEWELRY

Located in Dublin, D

GFCO certified Gemstone Color: White with Multicolor Sheen Gemstone Type: Rainbow Moonstone Gemstone

Category

2010s Malagasy Loose Gemstones

Materials

Moonstone

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Certified Gemstones For Sale on 1stDibs

Browse a vast assortment of certified gemstones for sale on 1stDibs. Frequently made of Gold, Platinum and 18k Gold, these items were constructed with great care. Find a collection of 3 vintage versions or 71 modern creations for a more contemporary example of these cherished accessories. Our collection, which features older pieces for sale from the 20th Century and newer versions made as recently as the 21st Century, has proven very popular over the years. The designs in our inventory of certified gemstones bearing Contemporary or Modern hallmarks are very popular. Many examples in our inventory of these items are appealing no matter their origins, but Merkaba, Tamir and FERRUCCI produced popular versions that are worth a look. Many pieces in our collection are stylish for most occasions, but Diamond versions, from our inventory of 48, can add a particularly distinctive touch to your look, day or night. Today, if you’re looking for oval cut certified gemstones and are unable to find the perfect match, our selection also includes cushion cut and emerald cut alternatives. Most of our certified gemstones for sale are for women, but there are 29 pieces available to browse for men.

How Much are Certified Gemstones?

Prices for certified gemstones start at $353 and top out at $325,000 with these rings, on average, selling for $28,000.

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.

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