Questions & Answers
Our trusted network of 1stDibs sellers answer common questions
How can I identify a cobalt Spinel?
1 Answer
True cobalt Spinel have a high-quality blue coloring that won’t glow under a UV light. For detailed analysis, consult a jeweler. Shop a collection of expertly-vetted cobalt spinel jewelry from some of the world’s top sellers on 1stDibs.
1stDibs ExpertApril 5, 2022
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Shop for Cobalt Spinel on 1stDibs
Certified Cobalt Spinel 1.53 Carats Natural Gemstone
Located in Brisbane, AU
Natural Cobalt Spinel
Weight: 1.53 Carats
Dimension: 7.00 x 6.47 x 4.72 Mm
Shape: Oval
Origin: Tanzania
Treatment: None
Certificate: AIG Certified
Category
2010s Tanzanian Arts and Crafts Loose Gemstones
Materials
Spinel
1.98 Carat Natural Blue Cobalt Spinel from Burma
Located in Hua Hin, TH
1.98 Carat Natural Blue Cobalt Spinel from Burma
Dimension: 7.68 x 6.35 x 5.28 mm
Shape: Oval Cut
Weight: 1.98 Carat
No Heat
GIL Certified Report No: St02022102151324
Category
2010s Burmese Loose Gemstones
Materials
Spinel
Cobalt Spinel 1.53ct Cushion Gemstone, AIG Certified, Tanzania
Located in Peshawar, PK
Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.
Category
21st Century and Contemporary Tanzanian Arts and Crafts Loose Gemstones
Materials
Spinel, Other
Cobalt Spinel 1.32ct Cushion Gemstone, AIG Certified, Tanzania, New
Located in Peshawar, PK
Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.
Category
21st Century and Contemporary Tanzanian Arts and Crafts Loose Gemstones
Materials
Spinel, Other
$800 Sale Price
20% Off
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Rare 1.48ct GIA Certified Natural Colour Change Cobalt Spinel Untreated Gemstone
Located in Birmingham, GB
Rare 1.48ct GIA Certified Natural Colour Change Cobalt Spinel Untreated Gemstone
GIA Certified Untreated Colour Change COBALT Spinel Gemstone.
Category
21st Century and Contemporary Loose Gemstones
Materials
Spinel
14 Karat White Gold Round Natural Blue Cobalt Spinel Eternity Band
Located in Houston, TX
This 14 karat white gold eternity band features fifteen round french set bright blue natural cobalt spinels with a total weight of 4.91 carats.
Category
21st Century and Contemporary North American Band Rings
Materials
Spinel, Gold, 14k Gold, White Gold
