This Regal Kings Ring is made of Sterling Silver with an 18K Royal Yellow Gold hammered center. The Borders are 2mm wide and the center is 5mm wide.18K Yellow Gold over Sterling SilverDimensions: 9mm x SizeDesigner: Renewed Metal: Rings are made of Fairtrade Gold when available or recycled precious metal. Resizing: Rings can be resized for free for the first thirty days. Engraving: We can engrave your jewelry for you here in Santa Fe. 30 Day Returns: You can return your ring for 30 days for a full refund, less shipping. Lifetime Warranty: Your ring is guaranteed against defect as long as you own it.