Features: Nickel Free, Quick Ship Earring Back: Post Setting: Prong Stone Cut: Round Stone Millimeter Measurement: 4 Mm Width Metal Color: White Earring Length: 4mm Earring Width: 4mm Care: Wipe Clean Stone Type: 2 Lab Created Sapphire Authenticity: Lab Created Stone Earrings Style: Stud Earrings Metal: Sterling Silver Country of Origin: Imported Metal may be rhodium plated to enhance appearance and reduce tarnishing. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.