Well, I guess that is a tip for the wise: when you hide your gold jewellry, hide it in a metal box that won’t collapse. Also it is significant that this jewellry is pure gold — no compounds to make it stronger.
"In a practice in northern Europe dating from the Bronze Age through Anglo-Saxon times, swords and other objects, many conspicuously valuable, were deposited in bogs, rivers, and streams as well as in the ground.
"We can no longer see hoards only as piggy banks," says Kevin Leahy, an authority on Anglo-Saxon history who was entrusted with the task of cataloging the Staffordshire treasure. Ritual deposits, as opposed to caches buried for safekeeping, are found not only in Britain but also in Scandinavia, homeland of some of England's Germanic tribes.
Significantly, many weapons—and sometimes other objects, such as a craftsman's tools—were, like the objects in the hoard, bent or broken before burial. Perhaps "killing" a weapon dispatched it to the land of spirits or rendered it a votive offering to the gods, its destruction representing the donor's irrevocable surrender of the valuable weapon's use."