If you want your pearl to last a lifetime, it is important not to expose it to sunlight, humidity, dryness, wide temperature variations, or acids which can all dull a pearl’s luster. Natural pearls retain their qualities better than cultured pearls. Pearls are also relatively soft and can be marked by scratches and crushed by pressure. Wearing your pearls often is the best way to care for them as the body’s natural oils keep them lustrous. Wipe the pearls with a soft cloth before putting them away.