Red coral (Corallium Rubrum) comes from certain areas, such as the Mediterranean, where the specific water temperature and conditions allow coral to thrive. Coral is a hardened tube or branch. Only about 10% of coral is considered jewelry quality. Coral comes in shades from blood-red to orange to pink to white.
Although coral has been used by Stone Age peoples as long as 30,000 years ago to decorate sepulchers (burial vaults), Native American artists have only used coral for the last 600 years.
When Europeans arrived in the New World, they brought with them “blood coral” from the waters of Spain and Italy.