Black stud earrings in a great oval button shape. We have these in a much larger size as well (see the last pic for a side comparison). These are so very retro & opulent. Each measures about 15x23mm or 1" in length.
Most all earrings are made with vintage lucite parts that were made in Rhode Island in the 1960's - early 80's by Best Plastics. We hand-set them with surgical steel earring posts and they have sturdy surgical steel/acrylic backings on them as well. Light-weight & fun to wear.