Here is a pair of Patricia Locke pierced earrings. The are not perfectly cube shaped as they are cut down where the post is attached. Each side has different etchings and different colored rhinestones. Each side of the cube measures 5/16" which is a tad over 1/4". Near the posts they are signed P. Locke in script. One earring is missing one of the tiny rhinestones. Not sure if they are sterling or not. No hallmarks. Sorry I don't have the backs.
Patricia Locke Silver Etched Cube Rhinestone Pierced Earrings