Premium series by the greatest processing technic. DIFFUSER’s premium series made by hand of artisan who has highest technic. Our premium series which focuses on traditional of Edo period to modern. Rare tortoiseshell was crimped to sterling silver by tortoiseshell artisan only used water and heat. Used BARAFU shell which has random colors difference and two style tortoise shell and two silver are combined. This succeeds to make luxury impressions.  Prevention of fade color on sterling silver and 24ct gold coating on gold coating silver so you don’t need to worry about color change in short term.