The Italian Horn is a Talisman that is widely recognized as a lucky charm, and symbol of good luck, protection, and prosperity, and it is often given as a gift to newborns or loved ones in need of extra protection. 18k Gold Filled Hypoallergenic | Nickel Free | Lead Free Waterproof | Sweat-proof | Tarnish Resistant Size: 16" 18" 20" and 24" 1.0mm Ball Chain 1.5mm Rolo Chain 2.5mm Mini Link Paperclip Chain