When you want to exchange cash for gold Los Angeles jewelers will not seek only 22 and 24 karat gold. They will buy any kind of jewelry that has gold, no matter even if it is 13 karat gold. They have this possibility because they test the gold content of jewelry before purchasing them and will pay only for the pure gold your jewelry will have.
Since they do all their testing and weighing in front of you, there will be no doubts either. You must not worry if your 14 karat gold jewelry shows that they are only 13 karat because there are fraudulent sellers of gold jewelry who will cheat innocent customers.
However, when you try to sell your gold, Los Angelis jewelers will always do a better job on testing your jewelry and weighing in order to make the right payment to you. They believe in customer satisfaction rather than making quick money.