Diatomaceous earth which is a type of algae deposits in the bottom of the sea, became a rock after many years. This watch is made using diatomaceous earth and uses Japanese traditional technique, "Leaguken" technique. The three-dimensional shape gradually changes shadows in natural light, allowing you to feel the passage of time. Designed to maximize the characteristics and feel of the material, it is also perfect for decorating your Japanese or modern spaces with wood or plaster. (The SiO2 of the watch logo is a symbol of silicon dioxide, the main ingredient of diatomaceous earth. )