What does a p mean stamped on gold?

A "p" stamped on gold typically indicates that the item is made of palladium, a precious metal often used in jewelry and alloys. Alternatively, it could also represent the French term "plaque," meaning the piece is gold-plated rather than solid gold. It's important to verify the context of the stamp to determine its exact meaning. Always consult a jeweler for precise information regarding metal markings.