Coral is one of the oldest marine organisms on earth, with a history of nearly 500 million years. Corals look like plants from the outside, but from a biological point of view, corals are a type of marine cylindrical coelenterate called “coral polyps”. Red coral is known as the only living spiritual creature in jewelry for thousands of years. It is charming, lustrous, crystal clear, warm and pleasant, and has won the love of many collectors. 　　The unique connotation of the great beauty of “red” 　　Coral, the English name is Coral, comes from Greek, meaning “bright colored stone”. Red coral is a type of coral. As the name suggests, red…