Cobalt spinel 0.071ct loose with treasure analysis report

This beautiful blue. This hard shine has a Mohs hardness of 8. "Blue spinel" does not necessarily mean "cobalt spinel"; anything with a confirmed cobalt band is called "cobalt spinel".

・Type: Loose (natural stone)
・Stone name: Cobalt spinel (cobalt band recognized)
・Weight: 0.071ct
・Scratch/chip: A
・Inclusion: A
·remarks:---
・Accessories: Identification book (Central Gem Research Institute (with analysis report)), case

▷For more information about spinel
Spinel characteristics, types, fakes, value standards, etc.


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karatz_item_id: 12506092