a rusty medallion

The surface of the medallion is golden in colour with a few silvery threads
running across its surface. Yet its material is neither gold nor silver as it
is very light and tarnished by greenish mould and brownish spots of rust. A
profusion of tiny flowers decorates the finely crafted lid and a daisy-chain
pattern runs along the sides.

It is a rusty medallion.
It radiates a magical aura.
It weighs about one pound.

You identify a rusty medallion.
It is an enchanted and unsellable locked, pickproof container.
It weighs fourteen ounces, and it is worth about two lauren and ten celeb.
Its keywords are medallion and rusty.