↓Warm Tips 1.Gems and cosmetics should be strictly separated. Gem is easily stained with grease makeup, which weakened its surface gloss.2.In the laundry, bath, please take off jewelry. Pearl should avoid acid and cannot contact with detergents.3.When sweating, don't wear jewelry. Sweat contains fatty acids and urea, which can effect pearl.4.If silver jewelry is wore for long time, which is easy to turn black, but that is normal. Using the ammonia, baking soda to immerse it or using toothpaste to clean, and then wash it with water, finally wipe and that can restore luster.