Old Glob are industrial brutalist style with a rustic look but clean lines and are Post earrings. The posts as well as the ear nuts are in sterling, to be able to wear artisan copper earrings without the allergy from base metals. 
The body in solid copper holds vintage/old washed ashore porcelain -beach combed at UK- set in an open back prongs style that allows the porcelain translucence to be noticed.
The pictures show the earrings on standard business cards, aside a quarter coin, a standard steel ruler with metric and imperial measurement and on a real human size mannequin ear to provide you with an idea of their real size.