Features: Nickel Free, Quick Ship Earring Back: Post Setting: Prong Shape: Round Stone Cut: Round Stone Millimeter Measurement: 6 Mm Width Metal Color: White Earring Length: 7mm Earring Width: 7mm Care: Wipe Clean Stone Type: 1 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: September Birthstone Earrings Style: Stud Earrings Metal: Sterling Silver Country of Origin: Imported Gemstones may be treated and may require special care. 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.