These are the Tiny Crab Post Earrings Petite Ear Studs Features: Genuine .925 sterling silver petite crabby crustacean posts. Tiny detailed crab charms measure approximately 8mm tall by 10mm wide. Sterling silver post with sterling silver clutch back. These petite crabs look like they&';re fresh out of the salty surf, all tough exterior and snappy claws. Crabs symbolize good luck, protection, and transformation. Zodiac symbol for Cancers (those born between June 21 - July 22).