[Cat cut] Thai black sapphire 5.047ct loose stone

The famous stone sapphire is a well-known gemstone. It is made from the same mineral corundum as ruby, but all corundum other than red is called sapphire. This is the most orthodox blue sapphire. Sapphire is the second hardest gemstone after diamond with a hardness of 9, and is tough, stable, and easy to care for.

This is a cat cut made from Thai black sapphire in collaboration with NOBU.
*This is a collaboration cut between NOBU and KARTAZ.

Type: Loose (natural stone)
・Stone name: Black sapphire
Weight: 5.047ct
・Size: 9.1 x 10.0 mm
Shape: Custom cut
・Scratches/chips: A+
・Inclusions:
Note: Heating is in progress.
*Sapphires are generally gemstones that have been heated.
・Accessories: Caratz quality guarantee, loose case (if it does not fit, a clear zip case)

▷For more information about sapphire
Sapphire characteristics, types, characteristics by origin, counterfeits, value standards, etc.


*We try to make the colors in the photos as close as possible to the actual product, but they may look slightly different from the actual product depending on the lighting conditions at the time of shooting and the monitor environment you are using. Also, some photos may have been taken using a penlight.

*For information on scratches, chips, treatments, and inclusions, please click here .

*For other frequently asked questions, please click here .


karatz_item_id: 12552233