This ring looks dirty and old, and it looks like it’s made of crappy tin. It’s pitted and scratched and bent and dented like it’s been stepped on by throngs of humanity for close to a thousand years. If any jeweler were to take the time to look at it, she’d say that the blink of an eye that it took to declare the ring worthless still took enough time that she’d lost money on the transaction.
Calling it “trash” would be an insult to refuse everywhere.
Any wizard who might look at the ring, would agree. It’s ugly, worthless, and completely unremarkable in any sort of sense.