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Unheated blue sapphire 6.181ct loose

Sapphire is a famous stone. Red corundum is called ruby, and all non-red corundum is called sapphire. Sapphire is the second hardest gemstone after diamond, with a hardness of 9. It has high hardness, toughness, and stability, making it an easy-to-handle gemstone. This is a rare unheated blue sapphire with a size of 6ct. Depending on the angle, you can see a little star when you shine the light on it.

・Type: Loose (natural stone)
・Stone name: Unheated blue sapphire
・Weight: 6.181ct
・Scratch/chip: S
・Inclusion: -
·remarks:---
・Accessories: Karatz quality guarantee card, case

▷For more information about Star Sapphire
Are there fake star sapphires? What is the value, origin, and famous star sapphire?


*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: 12537448