gemstone
Red Coral
Corallium rubrum
AI-generated identification · may be incorrectHardness of 3.5 on the Mohs scale, deep red to pinkish-red color, vitreous to dull luster, composed of calcium carbonate.
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Physical properties
Hardness of 3.5 on the Mohs scale, deep red to pinkish-red color, vitreous to dull luster, composed of calcium carbonate.
Formation & geological history
Formed from the calcareous skeletons of marine invertebrate polyps in deep ocean environments over hundreds of years.
Uses & applications
Widely used in high-end jewelry, carvings, and ornamental decorative items.
Geological facts
Also known as precious coral, it has been harvested for use in amulets and trade since ancient times.
Field identification & locations
Identified by its characteristic organic coral branch structure or polished bead form and reactivity to acid.
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