Cobalt Spinel 4.118ct Loose Stone Japan-Germany Exchange

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". 4ct large cobalt spinel with iron and cobalt bands. A certificate of identification from the Japan-German Gem Research Institute is included.

・Type: Loose (natural stone)
・Stone name: Cobalt spinel
・Weight: 4.118ct
・Size: 10.8×8.3mm
・Shape: Oval cut
・Scratch/chip: S
・Inclusion: S
·remarks:---
・Accessories: Identification book (Japan-German Gem Research Institute), loose case (if it doesn't fit, clear case with zip)

▷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: 12549822