3.5mm 14k Madi K 4-Cubic Zirconia Bezel Set Post Earrings - in 14k Yellow Gold - Width of Item: 3.5 mm - Length of Item: 10 mm - Earring Closure: Post & Push Back - Earring Type: Drop & Dangle - Finish: Polished - Feature: Solid - Feature 2: Nickel Free - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations. ::: [ Potential Enhancement Methods: cubic zirconia ] - Synthetic. Some are covered with a product that makes the stone more durable. ::: [ Care and Handling: cubic zirconia ] - Clean with warm soapy water and a soft cloth. :::