We are offering Coral Gemstones in India. Coral is the skeletal material of calcium carbonate, built up by small animals that live in colonies in the sea. Red, pink, and white coral is mostly calcium carbonate. Black and golden coral is conchiolin. Coral is usually branchlike and occurs in a variety of colors, of which the most sought after are rose red to red. In addition to coral, a number of other organic materials, including ivory, and jet, are considered gems