Earring Back: Friction Setting: Prong Shape: Marquise Stone Cut: Marquise Stone Millimeter Measurement: 4 Mm Width, 8 Mm Length Metal Color: Two Tone Earring Length: 16.5mm Earring Width: 6mm Care: Wipe Clean Stone Type: 2 Genuine Onyx, 8 Lab Created Sapphire Authenticity: Genuine Stone Earrings Type: Post Earrings Earrings Style: Drop 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.