I tell you, the price of platinum is almost the same as that of K gold now, but the price of platinum in gold shop is almost the same as that of gold. It is not cost-effective for you to exchange or recycle platinum in this way, because the store knows that the price of platinum is low, and I don't need to ask, the exchange price they give you is definitely much lower than when you bought it. This is really difficult to defend rights, because in any case, the store can't give you a replacement or recycling at the original price. I can only say that you bought it expensive. Now the price of K gold and platinum jewelry is really low, so you should choose the right business.