Diameter of hoops is just over 1" or 28mm and 9mm in width.
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.
Made in United States of America