knowledge - 18k gold-plated Brass jewelry to last anywhere from six months to two years with proper care. knowledge - 18k gold-plated copper jewelry to last anywhere from six months to two years with proper care. knowledge - Stainless Steel Jewelry is Water Friendly, Tarnish Resistant, General Liquid Friendly Elegant green crystal drop dangle earrings designed for everyday wear. Lightweight and sparkling green stone adds a pop of color. Hypo-allergenic finish for comfortable, sensitive-ear use. Versatile style that pairs well with casual and dress looks.