Coral

The scientific name is "Corallium rubrum". It can be red, orange, pink or white.

 The red one is present throughout the Mediterranean from Sicily and Sardinia to Morocco and Tunisia.

The quality of the coral, in the various fishing areas, is the same. Size and color depths, however can  vary.
The size of Mediterranean Coral ,  however, is  smaller  compared to Asian corals, so it is mainly used for necklaces, small incisions, cabochons etc.

As well as in the Mediterranean, coral is also fished in the Pacific, especially along the coasts of Japan and Midway to Hawaii.
The colors of the Asian corals range from white to dark red, and the dimensions are much larger than those of the Mediterranean, which make them more suitable for engraving.