Those shell pads using natural shell are made by artisans at a factory in Nara prefecture in Japan, known as one of the world best places where shell buttons for clothing are crafted. There are three types;
White Lipped Pearl Shell which is used for the highest class shell button treated equal to jewel and has been used for the face of high class watch since old days,

Black Lipped Pearl Shell which is a Mother Shell of large south sea black pearl and is used for high-class craft products.

Brown Lipped Pearl Shell which has characteristic of rainbow luster born from Mother of Pearl of a large-winged pearl shell in tropical and sub-tropic regions.

This part, which is produced in the manufacturing process blended manufacturing by machine controlled by the latest technology with traditional manufacturing by hand using old tools, has characteristics of deep gloss of natural material, a smooth texture and a smooth touch feeling.