Earring Back: Friction Setting: Prong Shape: Heart Stone Cut: Heart Stone Millimeter Measurement: 7 Mm Width, 7 Mm Length Metal Color: White Earring Length: 11.3mm Earring Width: 11.2mm Care: Hand Wash Stone Type: 40 Lab Created Sapphire, 1 Lab Created Opal Authenticity: Lab Created Stone Birthstone: October 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. Photos are enlarged to show detail.