Legal advice on jewelry sales

Questioner

I have already sent it before, I handed in jewelry on Friday at a gold on copper, but now that I came back on Saturday with the same kind of jewelry, the owner no longer wanted it and I have to return the money I received on Friday because this was titanium with gold and this was correct at first because the girl behind the counter had called her boss and no problem, I am now within my rights to keep the money or return it, I even received a receipt that it was correct. Please answer this.

Lawyer

The buyer has had the opportunity to examine the jewel properly. E Apparently there has even been a telephone consultation. In that case, sold is really sold so you do not have to give the money back.