The item is a sterling silver Saint Thomas Aquinas pendant and silver chain. The chain measures 24 inches long and it will have a lobster claw catch. The pendant measures 7/8 x 3/4 inches or 2.2225 x 1.905 centimeters. The back of the pendant is plain and we can engrave it for you at no charge. This item is made to order so please allow approximately 4 days before we can ship it. He is the patron saint of Catholic schools and students. I will provide a pendant box.