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Cobalt spinel from Tanzania 0.093ct loose
¥19,800
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".
Cobalt spinel containing iron and cobalt. The content of iron and cobalt has been tested using a UV-visible spectrophotometer. Cobalt spinel from Tanzania is a hot topic in Tucson in 2023.
・Type: Loose (natural stone)
・Stone name: Cobalt spinel
・Weight: 0.093ct
・Scratch/chip: S
・Inclusion: S
·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about spinel
Spinel characteristics, types, fakes, value standards, etc.
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12543656
・Type: Loose (natural stone)
・Stone name: Cobalt spinel
・Weight: 0.093ct
・Scratch/chip: S
・Inclusion: S
·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about spinel
Spinel characteristics, types, fakes, value standards, etc.
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12543656
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