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Star Sapphire 5.50 ct

Availability: In stock

General Mineral Informations
 Mineral: Sapphire
 Mohs Hardness: 9
 Specific Gravity: 3.95–4.03
 Refractive Index:  1.762 to 1.778


The base of this Star Sapphire is unpolished.




Black Star Sapphire 5.50 ct Top View 1

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  • Black Star Sapphire 5.50 ct Top View 1
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Additional Information

Type Cabochon
Carat 5.50
Measurements in mm 12.0x 7.9 x 5.0
Clarity Class Opaque
Treatment No treatment
Shape Oval
Origin Thailand


Clarity Classes


Loupe Clean   Under 10x magnification are no inclusions visible. Very Slightly Included   Within the gem are small inclusions that are visible on close  examination.
Almost Loupe Clean   Small inclusions are visible using a 10x magnification  loupe Slightly Included   SmallInclusions are visible without close inspection.
Eye Clean   Inclusions are not visible to the naked eye. Moderately Included   In the gemstone are larger inclusions that are easily visible.
Almost Eye Clean   Inclusions in the gem are difficult to detect with the naked  eye. Included   In the gem are many visible inclusions.
Opaque   Gem is not transparent and light doesnt shine through.