Antique Deep Virgin Mary Reliquary Locket with Small Chain

Beautiful religious Virgin Mary deep reliquary locket. I could not find any markings on this lovely locket and I don't believe it is sterling- but rather plated white metal. It measures approximately 1 inch tall without the bail and has a small length of chain attached like a fob. It has heavy tarnish and a few small dings on the outside but is in very nice condition and quite beautiful.