Scientists figure out origin of cobalt-blue spinel in Canada's Arctic

Small spinel stones with good transparency and fine cobalt-blue colour can sell for about 10 times the price of a comparable sapphire.

Spinel: Red and blue gems confused with ruby and sapphire

Diamond - Wikipedia

Delicate Yellow Flower With Five Petals, Green Leaves In Blurred Background Stock Photo Alamy

Location of the Beluga and Bowhead calc-silicate pods, True North Gems

BLUE SPLENDOR: watch the story of the BIGGEST COBALT BLUE SPINEL

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Scientists figure out origin of cobalt-blue spinel in Canada's Arctic

News and Events of the Physics Program at Bard

Delicate Yellow Flower With Five Petals, Green Leaves In Blurred Background Stock Photo Alamy

Spinel Color and Magnetism, Blue Spinel and Cobalt Spinel

蓝色妖姬——钴尖晶石- 知乎

Researchers Find World-Class Blue Spinel on Baffin Island in the Canadian Arctic

Research & News - NQTC Gemstone Laboratory • Gem Testing • Gem Origins