Made with genuine 925 Sterling Silver Nickel-free and lead-free Hypoallergenic and antimicrobial Boma 925 hallmark is located on the earring post Code: ES 5407 Dimensions: approx. 1/8" depth x 3/8" width x 3/8" height Because small can be a statement too. These essential sun and moon earring studs are crafted in 100% recycled Sterling Silver. Perfect for a second or third piercing, and will pair nicely with other jewelry styles. A great essential for mixing and matching, and comfy enough to sleep in.