These are all public, I can speak slowly; Jewelry experts say that the old and new jewelry can't be judged by time, but mainly depends on whether it has been used. In fact, it is easy to distinguish between old and new jewelry. Borrow the advice of Vincent Allen Guan Wei to share with you! First of all, from the gloss level. New jewelry shines, while old jewelry will look dull, and some will be oxidized and blackened by long-term exposure to air. Second, look for tiny scratches. No matter what material it is, if it is used, it will leave traces of friction with other objects, but brand-new jewelry is not. Third, see if there is scale in the dark corner. Worn jewelry will leave the scale in a dark corner, but brand-new jewelry will not. After cutting, check whether the parts are distorted, whether stones or gems may fall or move, and ensure that the brand-new jewelry is clean and complete.