As you probably know, shamrocks have 3 leaves and those with 4 leaves are four leaf clovers. Here is a great charm for St Patrick's Day, and aren't we all Irish on that day. 5/8" without the loop or ring by 1/2". Enamel is perfect. Marked Made in Ireland, J.M.Co, and sterling and date marks, as used in Ireland. The enamel is brighter than the photo shows.