Legal Question in Business Law in Pennsylvania

Whether or not the earrings can be returned depends on the terms of sale. If there were signs posted that "All Sales are Final", then the jeweler would not be required to take back the earrings, regardless of how much they cost. If the receipt stated that "All Sales are Final", but you did not get the receipt until after you paid for them, then you have a good argument that you should have the right to return the earrings. The point is that a customer has a right to know if an item is returnable before they pay for the item, regardless of the cost.