Stack them up! Crystal Bangle in gold tone is great for stacking. The 18k Gold Plated 2.5 Inch In Inner Diameter Bangle with Round Cut Clear Crystals Set Polished into a Lustrous Goldtone. 18k plated gold is achieved using an electroplating process that coats the item with heavy layers of 18k Yellow Gold and color-treated to display a perfect 14k Hamilton gold color.