Natural blue Spinel loose gemstone 2.07 ct. Certificate, Cushion Origin Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: greyish-Blue Gemstone Type: Spinel Gemstone size: 7.36x6.76x5.11 mm Cut Grade: Excellent Clarity...
Spinel
Natural Blue Spinel 2.14 ct., loose gemstone , Octagon cut, origin Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Blue Spinel gemstone High Quality! GFCO Laboratory certified Gemstone Color: Blue Gemstone Type: Spinel Gemstone size: 9.13x5.49x4.49 mm.
Spinel
Natural Violet Spinel loose gemstone 2.54 ct., High quality, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Violet Spinel loose gemstone 2.54 ct., High quality, Cushion cut, Origin Tanzania.
Spinel
GFCO Certified Natural 1.78Ct Grey Spinel gemstone, Heart cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Spinel gemstone Laboratory certified GFCO Gemstone Color: Grey Gemstone Type: Spinel Gemstone size: 6.88x7.76x4.63mm Cut Grade: Very Good Clarity/Grade: VS Gemstone Shape: H...
Spinel
2.16 Cts Tanzania Purple Spinel Marquise Faceted Natural Gemstone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Marquise Faceted Natural Cut Stone for Fine Jewelry Weight - 2.16 Cts Size - 12x6x5 mm Shape - Marquise Quantity - 1 Piece
Spinel
Certified Natural Tanzania Orange Pink Octagonal Step Cut Mahenge Spinel
Located in Kowloon, HK
Sourced from the renowned Mahenge region in Tanzania, this spinel boasts exceptional color and fire, making it an excellent choice for any jewelry setting.
Spinel
Natural Spinel Loose Gemstone 3.58 Ct. Certificate, Octagon cut. Origin Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Spinel loose gemstone Laboratory certified GFCO Gemstone Color: Lavender Purple Gemstone Type: Spinel Gemstone size: 10.69x6.79x5.06 mm Gemstone Shape: Octagon Cut Gemstone ...
Spinel
GIA Certified 1.18 Carat Trillion Cut Tanzanian Red Spinel Loose Gemstone
Located in Trumbull, CT
A GIA‑certified 1.18‑carat Tanzanian red spinel, cut into a striking trillion shape, is a highly desirable gemstone—made even more exceptional by its report showing no indication of ...
Spinel
GIA Certified 1.37 Carat Trillion Cut Tanzanian Red Spinel Loose Gemstone
Located in Trumbull, CT
A GIA‑certified 1.37‑carat Tanzanian red spinel, cut into a striking trillion shape, is a highly desirable gemstone—made even more exceptional by its report showing no indication of ...
Spinel
1.90 Carat Natural Loose Purplish Pink Spinel Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Sourced from Tanzania, a region celebrated for producing premium-quality Spinel, this genuine gemstone is carefully selected for its beauty and craftsmanship.
Spinel
$664Sale Price|20% Off
2.40 Carat Natural Loose Lavender Spinel Stone Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Sourced from the renowned gemstone deposits of Tanzania, this genuine Spinel is carefully selected for its outstanding quality, clarity, and fine craftsmanship.
Spinel
$1,440Sale Price|20% Off
2.17 Carat Certified Natural Cobalt Blue Spinel Asscher Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.17 carats Dimensions 7.78 x 7.42 × 4.48 mm Treatment None Origin Tanzanian Clarity Eye Clean Shape Cut Asscher GFCO Certified AG192 Elevate your fine jewelry collect...
Spinel
$360Sale Price|20% Off
1.30 Carat Natural Loose Lavender Spinel Stone Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.30 carat Dimensions 7.7x5.6x4mm Treatment None Origin Tanzania Clarity VVS Shape Cut Cushion This 1.30 Carat Natural Loose Lavender Spinel showcases a delicate and ...
Spinel
Natural Violet Spinel loose gemstone 2.97 ct, High quality, Certificate Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Violet Spinel loose gemstone 2.97 ct., High quality, Octagon cut, Origin Tanzania.
Spinel
2.20ct Grey Spinel Gemstone, Emerald Cut, Tanzania by Gilt Gemstone
By Gilt Gemstone
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$440Sale Price|20% Off
1.40 Carat Natural Loose Lavender Spinel Stone Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.40 carat Dimensions 6.9x5.7x6.1mm Treatment None Origin Tanzanian Clarity VVS Shape Cut Cushion This 1.40 Carat Natural Loose Lavender Spinel is a captivating gems...
Spinel
Spinel VIVID Green-Blue natural gemstone, heart cut, Origin Tanzania, Certified
By GRALJEWELRY
Located in Dublin, D
Natural Green-Blue Spinel gemstone Laboratory certified GFCO Gemstone Color: Vivid Green-blue/Blue-green Gemstone Type: Spinel Gemstone size: 8.38x9.48x5.46 mm Cut Grade: Very Good ...
Spinel
$520Sale Price|20% Off
Tanzanian 2.20ct Pink Spinel Oval Gemstone, Non-Treated, Arts Style
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel
GFCO Certified Natural 4.21 Ct., Blue Spinel gemstone, cushion cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Spinel Loose gemstone Laboratory certified GFCO Gemstone Color: Blue Gemstone Type: Spinel Gemstone size: 10.72x7.60x6.00 mm Cut Grade: Excellent Clarity/Grade: Eye Clean Ge...
Spinel
$760Sale Price|20% Off
2.55 Carat Natural Loose Pink Spinel Stone Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.55 carat Dimensions 7.7x7.2x5.5mm Treatment None Origin Tanzanian Clarity VVS Shape Cut Asscher This 2.55 Carat Natural Loose Pink Spinel showcases a vivid, rosy hu...
Spinel
$480Sale Price|20% Off
1.75 Carat Natural Loose Pink Spinel From Tanzanian’s Mine Africa
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel
$630Sale Price|30% Off
2.95 Carat Natural Loose Purple Spinel Stone Emerald Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.95 carat Dimensions 10.0x5.7x5.5mm Treatment None Origin Tanzanian Clarity VVS Shape Cut Emerald This 2.95 Carat Natural Loose Purple Spinel exhibits a rich, royal ...
Spinel
$624Sale Price|20% Off
2.30 Carat Natural Loose Pink Spinel Cushion Shape Tanzania’s Gemstone
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel
GFCO Certified Natural VS 3.22ct Violet Spinel gemstone, Cushion cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Spinel gemstone GFCO Laboratory certified Gemstone Color: Violet Gemstone Type: Spinel Gemstone size: 7.96x7.93x5.75mm Cut Grade: Very Good Clarity/Grade: VS Gemstone Shape:...
Spinel
$920Sale Price|20% Off
Certified 1.71 Carat Natural Loose Red Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$504Sale Price|20% Off
1.95 Carat Natural Loose Purplish Pink Spinel Cushion Cut Tanzania Gemstone
Located in Bangkok, TH
Weight 1.95 carats Dimensions 7.1x5.0x3.5 mm Treatment None Origin Tanzanian Clarity Eye Clean Shape Cut Cushion This 1.95 Carat Natural Loose Purplish Pink Spinel is a dazzli...
Spinel
$304Sale Price|20% Off
1.50 Carat Natural Loose Light Purple Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$880Sale Price|20% Off
Certified 1.44 Carat Natural Loose Red Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$336Sale Price|20% Off
1.20 Carat Natural Loose Cobalt Blue Spinel Emerald Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.20 carat Dimensions 6.3x6.0x3.9mm Treatment None Origin Tanzanian Clarity Eye Clean Shape Cut Emerald The 1.20 Carat Natural Loose Cobalt Blue Spinel is a captivating...
Spinel
$750Sale Price|25% Off
Cobalt Blue Spinel 1.31ct AIG Certified Oval Gem, Tanzania Origin
Located in Peshawar, PK
Faceted Cobalt Spinel Weight : 1.31 Carat Dimension: 7.84 x 5.94 x 3.80 Mm Colour: Blue Origin: Tanzania Treatment: Non Certificate: AIG Certificate Available Shape: Oval For years...
Spinel, Other
$592Sale Price|20% Off
1.90 Carat Natural Loose Purplish Pink Spinel Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.90 carat Dimensions 7.5x6.9x4.3mm Treatment None Origin Tanzanian Clarity VVS Shape Cut Cushion This 1.90 Carat Natural Loose Purplish Pink Spinel showcases a vibr...
Spinel
$760Sale Price|20% Off
Certified 2.92 Carat Natural Loose Purple Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$660Sale Price|25% Off
Certified 1.12 Carat Natural Loose Purple Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$595Sale Price|30% Off
Certified 1.05 Carat Natural Loose Blue Spinel Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$400Sale Price|20% Off
1.90 Carat Natural Loose Spinel Cushion Cut Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$384Sale Price|20% Off
1.60 Carat Natural Loose Spinel Cushion Cut Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$960Sale Price|20% Off
AIG Certified 2.07ct Purple Spinel Oval Cut Gemstone, Tanzania, New
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$280Sale Price|20% Off
1.20 Carat Natural Loose Pink Spinel Stone Cushion Cut Tanzanian Gemstone
Located in Bangkok, TH
Weight 1.20 carat Dimensions 6x6.1x4.1mm Treatment None Origin Tanzania Clarity VVS Shape Cut cushion NA This 1.20 Carat Natural Loose Pink Spinel radiates a soft yet vivid char...
Spinel
$440Sale Price|20% Off
1.80 Carat Natural Loose Spinel Oval Shape Gemstone From Tanzania
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
$1,300Sale Price|20% Off
2.76 carats Lavender Loose Spinel Stone Emerald Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Weight 2.76 carats Dimensions 9.08x7.00x5.01 mm Treatment none Origin Tanzania Clarity Loupe clean Shape octagon Cut emerald The Lavender Spinel is an exquisite gemstone, b...
Spinel
Natural Grey Spinel loose gemstone 2.11 ct., High quality, Cushion cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Grey Gemstone Type: Spinel Gemstone size: 8.06x7.17x4.78 mm Cut Grade: Excellent Clarity/Grade: ...
Spinel
Natural Grey-blue Spinel loose gemstone 2.05 ct., cushion cut, Origin Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey-blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Blue-Grey Gemstone Type: Spinel Gemstone size: 7.17x7.06x4.90 mm Cut Grade: Excellent Clari...
Spinel
Natural Grey-Blue Spinel loose gemstone 2.06 ct. High quality, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey-Blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Bluish-Grey Gemstone Type: Spinel Gemstone size: 7.42x6.28x4.84 mm Cut Grade: Excellent Cla...
Spinel
Natural Grey Spinel loose gemstone 2.03 ct., High quality, Cushion cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Bluish-Grey Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Bluish-Grey Gemstone Type: Spinel Gemstone size: 7.83x6.40x4.62 mm Cut Grade: Excellent C...
Spinel
Natural Grey Spinel loose gemstone 2.14 ct., High quality, Oval cut, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey-Blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Grey-Blue Gemstone Type: Spinel Gemstone size: 8.80x7.02x4.87 mm Cut Grade: Excellent Clari...
Spinel
Spinel 2.61 Ct Grey-Blue loose natural gemstone, High quality, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey-Blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Grey-Blue Gemstone Type: Spinel Gemstone size: 8.61x7.79x4.67mm Cut Grade: Excellent Clarit...
Spinel
Natural Grey-Blue Spinel loose gemstone 2.19 ct. High quality, Cushion, Tanzania
By GRALJEWELRY
Located in Dublin, D
Natural Grey-Blue Spinel gemstone from Tanzania GFCO Laboratory certified Gemstone Color: Grey-Blue Gemstone Type: Spinel Gemstone size: 8.42x7.22x4.52 mm Cut Grade: Excellent Clari...
Spinel
2.13 Carats Blue Spinel Oval Faceted Natural Gemstone for Fine Jewelry Tanzania
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Fine Jewelry Origin - Tanzania Weight - 2.13 Ct Size - 9x6x5 mm Shape - Oval Quantity - 1 Piece
Spinel
$624Sale Price|20% Off
3.40 Carat Natural Loose Lavender Spinel Stone Oval Cut Tanzanian Gemstone
Located in Bangkok, TH
Expertly cut in a refined oval shape, the stone offers exceptional brilliance, clean clarity, and a smooth, well-balanced polish that enhances its natural beauty. Sourced from Tanzan...
Spinel
$304Sale Price|20% Off
0.85 Carat Natural Loose Pink Spinel Heart Shape Tanzania’s Gemstone
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel
Certified 5.00 Carats Tanzania Pink Spinel Top Quality Cut stone Natural Gems
Located in Jaipur, RJ
Certified 5.00 Carats Tanzania Pink Spinel Top Quality Cut stone Natural Gems Weight - 5.00 Carats Size - 10.51x5.69 mm Shape - Oval Quantity - 1 Piece
Spinel
5.40 Carats Tanzania Mahenge Pink Spinel Cut stone For Jewelry Natural Gemstone
Located in Jaipur, RJ
5.40 Carats Tanzania Mahenge Pink Spinel Cut stone For Jewelry Natural Gemstone Weight - 5.40 Carats Size - 6x8 to 7x9 mm Shape - Oval Quantity - 3 Pieces
Spinel
15.22 Carats Tanzania Mahenge Pink Spinel Top Quality Cut stone Natural Gem
Located in Jaipur, RJ
15.22 Carats Tanzania Mahenge Pink Spinel Top Quality Cut stone Natural Gem Weight - 15.22 Carats Size - 7x5 To 8x6 mm Shape - Oval Quantity - 10 Pieces
Spinel
1.06 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.06 Ct Size - 6x4x3 mm Shape - Oval Quantity - 1 Piece
Spinel
1.11 Carats Tanzania Blue Spinel Oval Faceted Natural Cutstone for ring Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.11 Ct Size - 7x6x5 mm Shape - Oval Quantity - 1 Piece
Spinel
1.06 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 1.06 Ct Size - 7x5x4 mm Shape - Oval Quantity - 1 Piece
Spinel
0.78 Carats Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Jewelry Weight - 0.78 Ct Size - 7x4x3 mm Shape - Oval Quantity - 1 Piece
Spinel
1.64 Carats Tanzania Blue Spinel Oval Faceted Natural Gemstone for Fine Jewelry
Located in Jaipur, RJ
Tanzania Blue Spinel Oval Faceted Natural Cut Stone for Fine Jewelry Weight - 1.64 Ct Size - 8x6x4 mm Shape - Oval Quantity - 1 Piece
Spinel
1.70ct Oval Purple Pink Spinel from Tanzania, Arts and Crafts Style
By Gilt Gemstone
Located in Peshawar, PK
Major sources of spinel include Myanmar (Burma), Sri Lanka, Vietnam, Tanzania, and Tajikistan.
Spinel, Other
2.30ct AIG Certified Natural Vivid Pink Spinel Cushion Cut Loose Tanzania Gem
Located in Bangkok, TH
Weight 2.30 carats Dimensions 8.52x6.10x4.84 mm Treatment None Origin Tanzania Clarity VS Shape Cut AG201 Elevate your fine jewelry collection or investment portfolio with this...
Spinel
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.