Tagua (tah-gwah) is a plant alternative to ivory. A large, hard nut that can be cut, shaped and sculpted into. Get this beautiful Tagua half moon face ring in a sterling silver small design with an opal cabs and two silver star design. It comes in different sizes. Designed by Sabine Koehring and made in Indonesia. About 5.5g in weight and 1.75cm wide.