G750 shows another way of saying 18K gold. In other words, it is an alloy containing 75% gold and 25% other metals. . . D0.06ct indicates that the size of this diamond is 6 cents (worthless. Few people recycle this kind of diamond. . So ... If you recycle this ring, you will only calculate the price according to your gold weight. . Namely: the price of recovered gold 18K gold * the weight of withdrawn gold. . . . Generally speaking. . It's only worth a few hundred dollars. .