Coral

Corail, Koraal, Koral, Korál, Koralas, Koralldjur, Koralle, Korallid, Virágállatok, San hô, Κοράλλι, Коралл, Корал, 珊瑚,
산호, サンゴ, אלמוגים, مرجان


Commonly known      rarer (so called collectors stones)      very rare (rarities)      relatively rare organic material


Formula of the lime structures: CaCO3
Mineral class: carbonates
Crystal system: trigonal
Mohs scale: 3 - 4
Density (g/cm3): 2.6 - 2.7
Refractive index: 1.486 - 1.658
Colors: white, rose, red, blue, black
Fluorescence: slight
Pleochroism: -
Largest Coral: Black Coral up to 3m.
Deposits: worldwide oceans
Name: from the Greek word "korállion"

Red Coral


On this page you don't find photos of corals and coral-jewelry because corals are threatened by mankind.
The more people ask for precious corals the more reefs will be damaged.


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