The item is a sterling silver Saint Patrick pendant with a 20 inch silver curb chain. The chain will have a lobster claw catch. The pendant measures 1 inch tall and 7/8 inches wide or 2.54 x 2.2225 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. I will provide a pendant box. He is the patron saint of snakes , Ireland and engineers.