High quality 925 Sterling Silver: Tornado earrings are stamped 925-925. Makes a great gift: Earrings arrive in a gift box. Hypoallergenic: Each earring measures approximately 12millimeter x 7millimeter. Satisfaction guaranteed: We are a US based family owned business that promises superior customer service including excellent communication & easy returns. Tornado twister post earrings are made of 925 Sterling silver great for sensitive ears. Earrings feature butterfly backings. Dimensions: Each earring measures approximately 12millimeter x 7millimeter earrings arrive in a gift box.