Common closures listed for teal costume necklaces include spring-ring clasps, lobster-claw clasps, toggle clasps, and slide/adjustable closures.
Many teal necklaces include adjustment features such as an adjustable chain or slide closure. Some listings specify size ranges—commonly around 16–19 inches—or note similar adjustable length options.
Clean gently with a soft cloth or jewelry polish, store the pieces dry, and avoid contact with water, soaps, perfumes, and lotions. Remove necklaces before showering, exercising, or swimming.