T&T 10mm Clear CZ Square Stud Earrings Rose Gold (ES43). Material: TOP QUALITY 9k Rose gold Filled with Cubic Zirconia Stone. 925 Sterling Silver CZ. Size: 10mm. Wide bands require a larger size For bands that are wider than 10mm, you should consider getting a half or one size up (depending upon the width) as it will be more comfortable to wear.