Experts believe that silver alloy, used today as sterling silver, originated in continental Europe in the 12th century. Pure silver was found to be a soft and easily damageable material. When combined with other metals most commonly cooper, it produced a tougher material that could be heavily relied on. Jewelry Maintenance: 1.Do not contact liquid like water, sweat and cosmetics 2.Do not wearing at showering,washing,swimming,sporting 3.Please wear carefully, do not scrub it or make it fall to the ground Q & A:Is this sterling silver or just plated? A:All XIXLES jewelries are ALL-OVER 925 Sterling Silver. Q:Does it come with Gift Box A:Our jewelry come with the OPP bags with Gift Box. Q:Does this turn skin allergies green? A:No, all products in the store are made of 925 sterling silver hypoallergenic material, which is skin-friendly high-end jewelry. Q:Will it give me skin irritation? A:The materials are 925 sterling silver environmental friendly materials. So please do not worry about skin irritation. Please order with confidence, these sterling silver earrings will not make you disappointed