Earring Back: Friction Setting: Prong Shape: Oval Stone Cut: Oval Stone Millimeter Measurement: 5 Mm Width, 7 Mm Length Metal Color: Two Tone Earring Length: 13mm Earring Width: 11mm Care: Wipe Clean Stone Type: 2 Genuine Onyx, 36 Lab Created Sapphire Authenticity: Genuine Stone Earrings Type: Post Earrings Earrings Style: Stud Earrings Metal: Sterling Silver, 10k Gold 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.