A gold ring and necklace hidden by an Auschwitz prisoner in a false-bottomed mug for fear of looting by German Nazis has been discovered at site of the death camp, the Auschwitz museum said Thursday.

More than 70 years after the liberation of the World War II camp in occupied Poland, staff discovered the jewelry in a rusting enamel mug, one of thousands of pieces of kitchenware now on display at the museum.

"Such discoveries do take place but this one is unique because of how the jewelry was hidden," museum spokesman Pawel Sawicki told AFP.