Features: Quick Ship Earring Back: Friction Setting: Channel Stone Cut: Round Stone Millimeter Measurement: 2.5 Mm Length Metal Color: Yellow Earring Length: 20mm Earring Width: 3.8mm Care: Wipe Clean Stone Type: 18 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: September Birthstone Earrings Type: Post Earrings Earrings Style: Hoop Earrings Metal: 14k Gold Over 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.