Earring Back: Friction Setting: Prong Stone Cut: Pear Stone Millimeter Measurement: 7 Mm Length, 5 Mm Width Metal Color: White Earring Length: 15.1mm Earring Width: 6mm Care: Wipe Clean Stone Type: 2 Lab Created Opal, 10 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October 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.