Scientists figure out origin of cobalt-blue spinel in Canada's Arctic
By A Mystery Man Writer
Description
Small spinel stones with good transparency and fine cobalt-blue colour can sell for about 10 times the price of a comparable sapphire.
![Scientists figure out origin of cobalt-blue spinel in Canada's Arctic](https://pub.mdpi-res.com/nanomaterials/nanomaterials-12-00177/article_deploy/html/images/nanomaterials-12-00177-ag-550.jpg?1641524742)
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![Scientists figure out origin of cobalt-blue spinel in Canada's Arctic](https://files.secure.website/wscfus/7885803/4782844/blue-spinel-with-cobalt-478ct-norms-color-change-incandescent-w500-o.jpg)
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from
per adult (price varies by group size)