Beautiful reddish purple Abalone shell ring made by designer Tommy Singer. ~size 7.5 based on measurements (see pics) "Diné of the Navajo Nation artist Tommy Singer grew up on the Navajo Reservation and was taught silversmithing by his father, beginning at the age of seven. In the 1960s he invented the "chip-inlay" technique of using turquoise or coral chips in the silverwork. This technique has become widespread in his community. He also used stamps and work in overlay" - from website Adobe Gallery