These oxidized sterling silver stud earrings were originally created on a 3d modelling program, printed in wax and cast in sterling silver. The inner surfaces are oxidized to a smoky black, with striking polished edges. Each earring post is individually hardened for extra strength and durability. Please note that, like any piece of oxidized jewellery, the black finish is a surface treatment and may fade with wear. The inner surfaces are well-protected to reduce the chance of this happening.