Features: Quick Ship Earring Back: Post Stone Cut: Oval Stone Millimeter Measurement: 4 Mm Width, 6 Mm Length Metal Color: White Earring Length: 11.7mm Care: Wipe Clean Authenticity: Lab Created Stone Birthstone: October Birthstone Earrings Type: Post Earrings Earrings Style: Stud Earrings Metal: Sterling Silver Assembled in the US from Imported Materials Gemstones may be treated and may require special care. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Every piece of Black Hills Gold jewelry is made in the Black Hills of South Dakota. Traditional Black Hills Gold designs are typically comprised of 10K yellow gold or sterling silver and accented with 12K green and rose gold colored grape leaves. Legend has it that good luck comes to those who wear Black Hills Gold jewelry. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.