Red Coral
What is Red Coral?
Red Coral is the name given to material formed by living organisms — marine corals of the genus Corallium. The material is highly valued for its durability and wonderful red color. Red Coral was used for jewelry in ancient Egypt and was a very popular gemstone in the Victorian era.
Discover Values
This stone excels in beauty.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Red Coral before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Red Coral Localities Map
See where Red Coral is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Red Coral
CaCO3
Quick Facts
Physical Properties
- Color
- Red
- Hardness (Mohs)
- 3 - 4
- Density
- 2.6 - 2.7 g/cm³
- Streak
- White
- Luster
- Vitreous, Dull
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- CaCO3
- Elements
- Ca, C, O
Also Known As
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Red Coral FAQs
How do I identify Red Coral?
Red Coral can be identified by its hardness of 3 - 4 on the Mohs scale, Red color, Vitreous, Dull luster, Trigonal crystal system. Look for these key characteristics when examining specimens.
What color is Red Coral?
Red Coral typically appears in Red. Color can vary depending on impurities and formation conditions.
How hard is Red Coral?
Red Coral has a hardness of 3 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the composition of red coral of Red Coral?
CaCO3