BERRICLE Rhodium Plated Sterling Silver Princess Cut Cubic Zirconia CZ Solitaire Stud Earrings 7mm METAL: rhodium plated silver, stamped 925, high polished finish, nickel free. PREMIUM QUALITY STONE: Main Stone: 4 carat princess cut simulated opal cubic zirconia (7mm). MEASUREMENTS: 0.28 inch in length, posts with butterfly backs STYLE: These solitaire stud earrings' iridescent elegance and simple style will elevate any day to night look. GIFTING: Comes with FREE BERRICLE signature jewelry box and is ready for gifting.