gemstone
Red Coral
Corallium rubrum
AI-generated identification · may be incorrectHardness 3.5 on Mohs scale, vibrant red to pink color, vitreous to dull luster, organic calcium carbonate composition with an amorphous or branching skeletal structure.
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Physical properties
Hardness 3.5 on Mohs scale, vibrant red to pink color, vitreous to dull luster, organic calcium carbonate composition with an amorphous or branching skeletal structure.
Formation & geological history
Formed by marine colonial polyps in deep ocean environments over hundreds to thousands of years, primarily in the Mediterranean Sea and Pacific waters.
Uses & applications
Widely used in high-end jewelry, beads, and traditional carved ornaments.
Geological facts
Red coral has been harvested and traded as a precious gemstone since ancient Egyptian and Roman times for protective amulets.
Field identification & locations
Identified by its organic origin, characteristic porous texture, and natural red hue; soft enough to scratch easily.
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