Did you know, Barnacles can be found in any ocean, they appear to be in the mollusk family but are more similar to crabs and shrimp and are actually considered a crustacean. In order to grow they undergo the same molting process of shedding their external skin like all other crustaceans. These stud earrings are made from the molding and casting of a real found barnacle fossil in recycled silver. The original was found by my sister in Calvert County, MD. The whole earring is only 1/4" long and 1/4" wide. Each earring comes with a 7mm sterling ear nut backing. This design is currently available in solid polished sterling silver but other metals and finishes are always available, message me for custom options and a quote. All HKM Jewelry pieces are made to order and properly hallmarked for metal type and stamped for authenticity.