18" is a popular choice for women and the most popular length for pendants.
~ Metals may tarnish over time due to oxygen and natural body oils! ~ Keep jewelry away from water and humidity. Remove jewelry before bathing, showering or swimming. Remove jewelry before sleeping or participating in physical activity. Avoid contact with perfume, lotions, hairsprays, and other chemicals. Make sure jewelry is stored properly. Prevent damage and breakage by removing your jewelry at night