Iona Coastline Ring: 6mm with 4mm Iona Greenstone, by Hannah Louise LambCreated for Aosdna by Scottish designer, Hannah Louise Lamb, this beautiful interlocking ring depicts the distinctive coastline of Iona. Two contrasting pieces of silver, one polished and one textured join together to create the island's coastline in a 6mm wide band. This version is set with a 4mm round Iona Greenstone. We also have a version with a 2mm stone shown here. To keep your ring in perfect condition, it comes with a textured and smooth