Learn what to do and who to see to ensure successful returns.
Use some detective work to discover where to return the gift if it didn't come with definitive markings or a gift receipt. Subtly ask the gift giver, "Where did you find something so pretty?" Don't rely on gift box info; boxes are often reused.
If you're at a dead end, do research online to see who carries the item―stores that sell it may accept a return or offer an exchange.