Kuwayama has established partnerships with all major domestic and overseas suppliers of diamonds (Excellent Cut, Heart and Arrow and generic) and pearls (Akoya and South Sea). Kuwayama's sales division provides immediate and specialized knowledge to its customers whenever requested. Kuwayama also actively promotes the interactive development and marketing of new products in cooperation with its customers. Furthermore, Kuwayama constantly engages in the development and marketing of a wide variety of jewelry parts such as gold beads, clasps and chains.













