Captivating 3.88ct Star Sapphire Gemstone - GIA Certified
Located in רמת גן, IL
Captivating 3.88ct Star Sapphire Gemstone - GIA Certified This breathtaking 3.88-carat Star Sapphire displays a captivating purplish-pink hue, making it a rare and unique gemstone.
Star Sapphire
Mesmerizing 3.15ct Natural Aquamarine Loose Gemstone - NGI Certified
Located in רמת גן, IL
TECHNICAL SPECIFICATIONS Jewelry type: Loose Gemstone Metal: NA Main Stone: • Stone: Natural Aquamarine (Beryl) • Quantity: 1 stone • Carat weight: 3.15 ct • Dimensions: 12.98 x 9.3...
Aquamarine
LAB SEALED Certified 3.03 Teal Oval Emerald Gemstone
Located in Crescent City, IL
Bright teal green certified 3.03ct. oval emerald gemstone. Polished faceted glossy surface.
Emerald
Gübelin Certified Colombian Emerald-Cut Emerald Loose Gemstone
Located in New York, NY
Equally suited for a bespoke high jewelry creation, an exceptional engagement ring, or inclusion in a distinguished gemstone collection, this emerald represents an outstanding opport...
Emerald
Colombian Emerald-Cut Emerald Loose Gemstone, Gübelin Certified
Located in New York, NY
This remarkable Colombian emerald-cut emerald weighs 12.08 carats and is accompanied by a prestigious Gübelin Gem Lab Report confirming its Colombian origin. Expertly fashioned in a ...
Emerald
$3,120Sale Price|20% Off
9.67ct Pink Tourmaline gemstone natural 100% certified
Located in Jupiter, FL
Pink tourmaline, large in size, will come with a certificate of authenticity. NATURAL GEMSTONE(S): PINK TOURMALINE Clarity/Color: Slightly Included/Pink Cut: Rectangular Treatment: ...
Tourmaline
$440Sale Price|20% Off
5.70 carats Pinkish Red Umbalite Garnet Stone Cushion Cut from Africa
Located in Bangkok, TH
Expertly cut into a fancy cushion shape, this certified gemstone radiates a vivid pinkish-red hue, perfect for luxury jewelry designs or as a standout collector’s gemstone.
Garnet
IGI Certified 3.40ct Pink Oval-Shaped Tourmaline Gemstone
Located in רמת גן, IL
IGI Certified 3.40ct Pink Oval-Shaped Tourmaline Gemstone This elegant natural pink Tourmaline features a classic oval cut with a weight of 3.40 carats.
Tourmaline
GIA Certified Natural Burma Ruby 3.59 Carats No Heat Carved Double Cabochon Gem
By OGI Ltd
Located in New York, NY
GIA-certified colored gemstones are increasingly favored for custom fine jewelry, milestone gifts, and alternative investment collections due to their rarity, authenticity, and endur...
Ruby
$960Sale Price|20% Off
Cobalt Spinel 1.53ct Cushion Gemstone, AIG Certified, Tanzania
Located in Peshawar, PK
Faceted Cobalt Spinel Weight : 1.53 Carat Dimension: 7.00 x 6.47 x 4.72 Mm Colour: Blue Origin: Tanzania Treatment: Non Certificate: AIG Certificate Available Shape: Cushion For ye...
Spinel, Other
Majestic 3.68ct GIA Certified Alexandrite Round Cabochon Gemstone
Located in רמת גן, IL
Prepare to have your mind blown by this spicy, color-shifting 3.68ct Natural Chrysoberyl that’s basically two gems in one. This rare round cabochon is a persuasive master of disguise...
Alexandrite
3.01 Ct Blue Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.80 Ct Blue Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Blue Sapphire
2.50 Ct Blue Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.09 Ct Blue Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.13 Ct Blue Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.17 Ct Blue Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.01 Ct Blue Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.88 Ct Blue Sapphire Octagon Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
4.17 Ct Blue Sapphire Radiant Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
4.06 Ct Blue Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Blue Sapphire
2.03 Ct Blue Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Blue Sapphire
Natural Tourmaline gemstone GFCO Certified 6.54ct , Cushion , Nigeria
By GRALJEWELRY
Located in Dublin, D
Natural Tourmaline gemstone Certificate GFCO Gemstone Color: yellowish green Gemstone Type: Tourmaline Gemstone size: 13.18x9.85x6.97mm Cut Grade: Very Good Clarity/Grade: VVS Gemst...
Tourmaline
Certified 3.49ct. Teardrop Faceted Dark Green-Blue Sapphire Gemstone
Located in Crescent City, IL
Certified 3.49 carat polished teardrop-shaped (pear) faceted sapphire gemstone.
Green Sapphire
$500Sale Price|20% Off
1.39ct Pear Pink Tourmaline Loose unset gemstone certified
Located in Jupiter, FL
Pink tourmaline,pear shape., certified! NATURAL GEMSTONE(S): Tourmaline Clarity/Color: Slightly Included/Pink Cut: Rectangular 10.3mm x 3.9mm Carat: 1.39ct Treatment: none WHAT YO...
Tourmaline
GIA Certified 3.58 Carat Cushion Cut Tsavorite Loose Gemstone
Located in Trumbull, CT
GIA‑Certified 3.58 Carat Tsavorite — Cushion Cut, Exceptional Transparency This GIA‑certified 3.58‑carat tsavorite garnet is a striking example of the vivid green brilliance that has...
Garnet, Tsavorite
1.13 Ct Yellow Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Yellow sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury j...
Yellow Sapphire
1.20 Ct Pink Sapphire Octagon Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Pink Sapphire
1.24 Ct Pink Sapphire Pear Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Pink Sapphire
1.68 Ct Pink Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Pink Sapphire
1.63 Ct Pink Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Pink Sapphire
1.14 Ct Pink Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Pink Sapphire
1.97 Ct Green Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Green sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury je...
Green Sapphire
3.37 Ct Yellow Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Yellow sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespo...
Yellow Sapphire
3.12 Ct Pink Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Yellow sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespo...
Pink Sapphire
2.53 Ct Yellow Sapphire Radiant Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Yellow sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury j...
Yellow Sapphire
3.20 Ct Pink Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Pink Sapphire
2.90 Ct Pink Sapphire Round Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Pink Sapphire
3.80 Ct Pink Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Pink Sapphire
3.09 Ct Green Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Green sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury je...
Green Sapphire
2.05 Ct Pink Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Pink sapphire offers elegance and sophistication. With its graceful color tone, clarity, and natural character, this sapphire is an excellent choice for creating bespoke...
Pink Sapphire
4.05 Ct Blue Sapphire Pear Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
2.96 Ct Blue Sapphire Oval Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
3.65 Ct Blue Sapphire Cushion Certified Loose Gemstone
Located in Fort Lee, NJ
This natural Blue sapphire offers elegance and sophistication. With its rich colour saturation and precise cutting, it is the perfect centrepiece for an engagement ring or luxury jew...
Blue Sapphire
$712Sale Price|25% Off
LAB SEALED Certified 1.85 Carat Green Teal Sapphire Gemstone
Located in Crescent City, IL
One beautiful natural 1.85ct. blue green (teal) sapphire unheated and untreated. This gorgeous gemstone is faceted and polished to perfection. Ready to suit your jewelry needs. Labor...
Green Sapphire
Certified Mahenge Spinel 3.15 Carats Loose Gemstone Cushion Cut
Located in Brisbane, AU
Loose Spinel Weight: 3.15 Carats Dimension: 8.5 x 7.2 x 6 Mm Shape: Cushion Colour: Silky Purple Origin: Tanzania (Mahenge) Treatment: None Certificate: AIG Certified . Mahenge spin...
Spinel
GIT Certified 1.21 Carat Natural Loose Blue Sapphire Gemstone
Located in Peshawar, PK
Loose Sapphire Weight: 1.21 Carats Dimension: 8.03 x 6.07 x 2.88 Mm Origin: Madagascar, Africa Treatment: Heat Enhancement Certificate: GIT Certificate Available Sapphire, a g...
Blue Sapphire, Other
Certified 2.31 Carat Natural Loose Cornflower Blue Sapphire Gemstone
Located in Peshawar, PK
Loose Sapphire Weight: 2.31 Carats Dimension: 8.84 x 6.95 x 4.25 Mm Origin: Madagascar, Africa Treatment: Heat Enhancement Certificate: AIG Certificate Available Sapphire, a ge...
Blue Sapphire, Other
$840Sale Price|20% Off
Certified 1.32 Carat Natural Loose Spinel Cushion Cut Gemstone
Located in Peshawar, PK
Faceted Spinel Weight: 1.32 Carat Dimension: 6.26 x 5.60 x 4.52 Mm Colour: Orangy Red Shape: Cushion Origin: Tanzania Treatment: None Certificate: AIG Certificate Available Spine...
Spinel, Other
Certified Colombian Green Emerald 4.14 Carat Loose Gemstone Natural Emerald
Located in Peshawar, PK
Gemstone: Natural Emerald Variety: Green Emerald Weight: 4.14 Carats Size : 9.86 * 8.81 * 6.84 mm Origin: Colombia Color: Intense Green Certification: Certified Shape: Octagon Clarit...
Emerald
GFCO Certified Natural 2.45Ct Blue Spinel gemstone, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Spinel gemstone Laboratory certified GFCO Gemstone Color: Blue Gemstone Type: Spinel Gemstone size: 8.25x7.38x4.91mm Gemstone Shape: cushion Cut Gemstone Creation: Natural G...
Spinel
Certified 8.00 Ct. Natural Rhodolite Garnet loose gemstone, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Rhodolite Garnet loose gemstone Laboratory certified GFCO Gemstone Color: VIVID purplish-RED-PINK Gemstone Type: Garnet Rhodolite Gemstone size: 12.39x10.60x6.78 mm Cut Grad...
Garnet
Certified 5.93 Ct. Natural Rhodolite Garnet loose gemstone, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Rhodolite Garnet loose gemstone Laboratory certified GFCO Gemstone Color: VIVID RED-PURPLE/PURPLE-RED Gemstone Type: Garnet Rhodolite Gemstone size: 10.35x9.74x6.53 mm Cut G...
Garnet
Certified 8.07 Ct. Natural Rhodolite Garnet loose gemstone, Octagon, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Rhodolite Garnet loose gemstone Laboratory certified GFCO Gemstone Color: RED-PINK-PURPLE Gemstone Type: Garnet Rhodolite Gemstone size: 12.17x9.75x7.90 mm Cut Grade: Excell...
Garnet
$880Sale Price|20% Off
GFCO Certified 1.45 Carat Natural Loose Burmese Spinel Gemstone
Located in Peshawar, PK
Faceted Spinel Weight: 1.45 Carat Dimension: 7.53 x 6.33 x 3.80 Mm Colour: Red Shape: Cushion Origin: Myanmar (Burma) Treatment: None Certificate: GFCO Certificate Available Spinel...
Spinel, Other
$11,520Sale Price|20% Off
Bellerophon Certified Vivid Blue Sapphire: Faceted Gemstone 5.50 CT
Located in Peshawar, PK
This sapphire gemstone is a captivating example of one of the most revered precious stones in the world, celebrated for its strength, beauty, and timeless appeal. Featuring an SI cle...
Blue Sapphire
$840Sale Price|20% Off
Certified 1.11 Carat Natural Loose Burmese Red Spinel Gemstone
Located in Peshawar, PK
Faceted Spinel Weight: 1.11 Carat Dimension: 6.40 x 6.16 x 3.74 Mm Colour: Red Shape: Cushion Origin: Myanmar ( Burma ) Treatment: None Certificate: GFCO Certificate Available Spin...
Spinel, Other
GFCO Certified Natural 7.06Ct. Blue Cobalt Spinel gemstone, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Cobalt blue Spinel Loose gemstone Laboratory certified GFCO Gemstone Color: Cobalt Blue Gemstone Type: Spinel Gemstone size: 12.08x10.20x6.60 mm Cut Grade: Excellent Clarity...
Spinel
Colombian Emerald Loose Gemstone, 0.80ct Emerald Cut, GIA Certified
Located in Brooklyn, NY
Stone: Colombian Emerald Total Weight: 0.80 carat Shape: Octagonal Cut Clarity: Transparent Luster: Very Good Color: Medium Bluish Green Measurements: 6.47 mm x 5.04 mm x 3.71 mm Ge...
Emerald
IGA Certified 2.60ct Burmese Red Spinel Cushion Gemstone, Unisex
Located in Peshawar, PK
Faceted Spinel Weight : 2.60 Carat Dimension: 6.61 x 8.66 x 5.45 Mm Colour : Red Treatment: Non Origin: Myanmar (Burma) Shape : Cushion Certificate: IGA Certificate Available Spin...
Spinel, Other
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.