16.5" long, 3/8" wide, consisting of brass or other gold-colored metal shamrocks with guilloché style red clear enamel. The "veins" or patterns on the leaves come through nicely. c. 1920, maybe? Kind of whatever until I added a bashed-up XXL dog clip that looks like it's been through hell - now you've got a much more interesting necklace that can serve as a colorful chain for a charm collection.