Are the two golden earrings found among the wedding gifts, whose owner is unknown, considered lost property or a gift that can be utilized?

If it is predominantly the case that the bag contains only gifts for the wife, then the earrings are a gift to her, and she may benefit from them. However, if it is possible for items other than gifts to be placed in the bag, and no one has mentioned gifting them to her, then they are considered lost property (luqata) that must be announced for a year, after which she may dispose of them. In both scenarios, if the owner comes and proves ownership, the items must be handed over to him.