The item is a sterling silver Saint Albert pendant with a 24 inch long silver curb chain. The chain will have no catch. Just slide it over your head. If you would like a chain with a catch or a different style or length chain let me know before ordering. 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 at no charge for you. This item is made to order so please allow me approximately 4 days before I can ship it. I will provide a pendant box. He is the patron saint of scientists and medical technicians.