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A material of organic origin, used as a gemstone, formed from calcified skeletons of marine creatures, found mainly in the western Mediterranean, the Red Sea, and the waters off Malaysia, Japan, and Hawaii. Coral is a dull red, but when polished becomes reddish-pink with a vitreous lustre. It is used for beads for necklaces, bracelets, and other jewellery and for small decorative objects and sculpture.

Subjects: Art — Science and Mathematics.

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