Features: Quick Ship Earring Back: Post Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 7 Mm Length, 5 Mm Width Metal Color: White Earring Length: 17.4mm Earring Width: 8.9mm Care: Wipe Clean Stone Type: 2 Lab Created Opal, 20 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October Birthstone Earrings Style: Drop 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. Some diamonds may consist of fewer than 17 facets. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.