Sterling Silver Stud Earrings with 5mm round brilliant cut Cubic Zirconia. NEW LOW PRICE These are simple and elegant .925 sterling silver stud earrings with a 5mm round brilliant cut Cubic Zirconia in each mount. They are beautifully cut white stones that reflect light just like a fine diamond, which creates a fiery effect within the gems. Each CZ measures 5mm and compare to a total carat weight of approximately 1 carat. The sterling silver is coated with a rhodium finish to insure they do not tarnish.