This collection is for those seeking greater durability and avoidance of rusting and corrosion. This collection is their trade name for a non-metallic compound that includes ground marble particles. The finish on their products is premium grade and resists peeling, chipping, and harmful UV rays. Being an injection molded material, this Wall Sconce is strong and lends itself to the production of fine design details. This collection is the most durable material available for making outdoor lighting fixtures.