Sea Stone Napkin Ring in Green Set of 4 by Kim Seybert. The Sea Stone Napkin Ring features aquatic shades of green resin stones set in clusters. These sea-inspired napkin rings are reminiscent of tumbled stones found upon the shore. Arranged at random, the stones are mounted on a beautifully beaded napkin ring. These nautical beaded napkin rings are the perfect addition to a bright and cheery table. Materials: 65% Acrylic Beads, 25% Metal Base, 10% Glass Beads