Colorful enamel and a diatom-inspired pattern make this open-circle pendant wonderfully graphic. Enamel Diatom Open Circle Pendants shows Daria Salus at their most straightforward, with the materials doing more talking than the sales pitch. The pendant is about 1.5 inches across and hangs from an 18-inch oxidized sterling silver chain. The open circle keeps the detailed diatom pattern feeling light, graphic, and easy to wear.