mineral (organic gemstone)
Precious Red Coral
Corallium rubrum / Corallium japonicum
Hardness: 3-4 (Mohs), Color: Deep red to pink, Luster: Dull (natural) to Vitreous (polished), Crystal Structure: Trigonal (microcrystalline calcite), Specific Gravity: 2.6-2.7
Identified More mineral (organic gemstone) →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3-4 (Mohs), Color: Deep red to pink, Luster: Dull (natural) to Vitreous (polished), Crystal Structure: Trigonal (microcrystalline calcite), Specific Gravity: 2.6-2.7
Formation & geological history
Biological formation by marine polyps in deep-sea habitats, typically in the Mediterranean Sea or Pacific Ocean, secreting calcium carbonate skeletons over many years.
Uses & applications
Primarily used as a gemstone in high-end jewelry and religious ornamentation.
Geological facts
Precious coral is organic, like pearls or amber. It has been used as a protective amulet since Ancient Roman times and is known for its beautiful branching colonies.
Field identification & locations
Identified by its distinctive red color, branch-like structure, and potential wood-grain-like growth rings when viewed under magnification. Found in rocky seabeds at depths of 10 to 300 meters.
More like this
Other mineral (organic gemstone) specimens
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Mineral (Organic Gemstone)
Coral (Precious Coral)
Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).
Mineral, Organic Gemstone
Amber
Succinicum (C10H16O)
mineral
Amber and Citrine Quartz
Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)
mineral
Amber
Organic gemstone (Succinite)
mineral
Amber
Succinite (Organic Gemstone)
mineral