Surgical steel post, nickel free. Gold-tone plated brass in antique gold finish with pretty butterflies. See photos for size approximations. All my listings are from my personal collection, therefore are in pre-owned, gently used condition (worn once or twice). Ret $180, selling mine at listed price. Final sale and price as listed (firm, *kindly note low offers outside my comfort zone may be left unanswered or respectfully declined). Comes with designer dustbag and box as pictured. Thank you for your interest in these beautiful earrings. :)