What is the ruling on buying and selling gold at the mentioned price, where the selling price is higher and the buying price is lower for the same jewelry, considering it broken gold when reselling it?

It is permissible to sell gold for silver or for banknotes without equality in quantity, and the price is according to the agreement of the two parties, provided that possession takes place in the contract session. Thus, there is no blame on gold manufacturers to buy gold at a lower price and sell it at a higher price, because Allah has permitted trade and allowed profit, while the Lawgiver encourages leniency in buying and selling.