Stainless Steel and Black Enamel Stud Earring

unusual single stainless steel and black enamel stud earring, highly polished steel square with enamel is soldered onto thicker brushed steel square, length of post 11 mm, stud size 4mm x 4mm, size of enamel square within 2.5 mm x 2.5 mm, thickness (on top of ear) 1.5 mm, 0.3 g light