These are the perfect staple hoop. The simplicity is timeless. We are pretty sure these will become your go-to everyday pair. 15mm Diameter - Simple Perfection! These earrings are 18K Gold Plating - These pieces are 4x the average plating. Nat & Noor have ensured that their pieces have a thick plating that will last. We want these to be well worn and loved, timeless pieces.