An octagon black onyx ring and necklace set decorated with marcasite gemstones and green enamel. This set comes with a sterling silver 45cm chain. Onyx Ring Information: Number of Stones: 1 Stone Shape: Octagon Stone Size: 6mm x 4mm Carat Weight: 0.722ct Country of Origin: Brazil Marcasite Ring Information: Number of Stones: 2 Stone Shape: Round Stone Size: 1.2mm Carat Weight: 0.026ct Country of Origin: Austria Onyx Necklace Information: Number of Stones: 1 Stone Shape: Octagon Stone Size: 6mm x 4mm Carat Weight: 0.722ct Country of Origin: Brazil Marcasite Necklace Information: Number of Stones: 2 Stone Shape: Round Stone Size: 1.2mm Carat Weight: 0.02ct Country of Origin: Austria