Clasp types are mechanisms used to secure jewelry, ensuring it stays in place while being worn. Common types include the lobster clasp, which features a spring-loaded lever for easy opening and closing, and the spring ring clasp, a circular clasp that opens when a small lever is pulled. Other popular clasps include the toggle clasp, which consists of a bar and a loop, and the magnetic clasp, which uses magnets for a simple, quick closure. Each clasp type offers different levels of security and ease of use, catering to various styles and preferences in jewelry design.