Marbled tortoise with black subtle striping in a great stud shape . These bullet casing-shaped earrings measure approximately 12mmx14mm - just big enough to be classic & go with everything, but they'll get noticed. 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.