Stacking is in. These double-gemstone flatback studs are perfect for your cartliage, lobes, helix, conch, and beyond with the perfect hint of sparkle that won't overwhelm your other pairs. Featuring 14K gold plating and premium cubic zirconia round and baguette-style stones.Stud top dimensions: 4.1mm x 3.7mmBaguette cubic zirconia: 1.5mm x 3mmRound cubic zirconia: 1.5mm