1, the ring you bought may be fake, not fake platinum, because theoretically platinum will not turn black. Platinum is extremely hard, twice as strong as gold, and its toughness is much higher than that of ordinary precious metals. Platinum is beautiful in color; Strong ductility; Resistance to melting, friction and corrosion; Chemical stability at high temperature.

2. If the ring is worn for a long time, some stains will be attached, which will lead to the darkening or local discoloration of the platinum ring surface. At this time, you can squeeze the toothpaste on the towel, then rub it back and forth on the platinum diamond ring to wipe off the fine lines and dirt on the surface, then rinse it with diluted cleaning solution and then rinse it with clear water to restore its original luster.