Overall Grade - AAAA Luster - AAAA Body - AAAA Shape - AAAA Color - Gray Pearl Size - 10 mm The Masami Fine Jewelry Collection is made of natural Mother of Pearl Shells harvested from the South Sea and perfected by Man. Each shell is meticulously shaped into a bead which is then polished and coated by Old World Artisans to enhance the beauty of its deep innate luster. Created by both Man and Nature, Masami jewelry is a true natural wonder and reflects all the characteristics you have come to expect in fine quality jewelry.