Size:21MM DIA Material: metal
Stamped plates for 30MM glass lockets:
http://www.fsbiochem.com/Glass-Lockets/Glass-Lockets/30MM-Silver-lockets-19198.html
http://www.fsbiochem.com/Glass-Lockets/Glass-Lockets/30MM-Crystal-Glass-Memory-Locket-Floating-Charm-Pendant-19283.html