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 can also be made in silver filled for 88.00, gold filled for 382.00 or 14 k gold for 1,700.00. If you would like this made in any other metal let me know and I will create a new listing. 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.