Earring Back: Friction Setting: Prong Shape: Circle Stone Cut: Round Stone Millimeter Measurement: 4 Mm Length Metal Color: White Earring Length: 13mm Earring Width: 13mm Care: Wipe Clean Stone Type: 18 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: September Birthstone Earrings Type: Post Earrings 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. Photos are enlarged to show detail.