An eye catching marcasite ring crafted from sterling silver, featuring an octagon shaped black onyx gemstone surrounded by marcasite gemstones.Black Onyx Information: Number of Stones: 1 Stone Shape: Octagon Stone Size: 9mm x 7mm Carat Weight: 2.46ct Natural/Created: Natural Black Onyx Country of Origin: Brazil Marcasite Information: Number of Stones: 36 Stone Shape: Round Stone Size: 2mm | 1.3mm | 0.9mm Carat Weight: 0.47ct Natural/Created: Natural Marcasite Country of Origin: Austria