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Chemical Formula: HgS
Color: Red
Specific Gravity: 8.1
Hardness: 2-2.5

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Cinnabar is a red sulphide of mercury that occurs in brilliant red crystals and in red or brown amorphous masses.

Cinnabar adds a distinct color to the mineral color palette and its twinned crystals are considered classics among collectors. The color of cinnabar ranges from bright scarlet or cinnamon red to a brick red with an adamantine to submetallic luster in darker specimens. The gemstone's hardness is 2 to 2.5 and is used for making beautiful jewelry.

The gemstone is found in regions of Spain, Serbia, China, and California & Arkansas in USA.