This art deco statement ring is the perfect addition to your jewellery collection, featuring a large oval Onyx stone surrounded by glistening marcasite gemstones. Once used as a substitute for the shine of a diamond, the natural semi-precious gemstone marcasite is now celebrated for its lustre and metallic beauty.Onyx Information: Number of Stones: 1 Stone Shape: Oval Stone Size: 18x12mm Carat Weight: 10.00 Natural/Created: Natural Onyx Marcasite Information: Number of Stones: 28 Stone Shape: Round Stone Size: 1.30mm Carat Weight: 0.47ct Natural/Created: Natural Marcasite