Burmese alphabet Wikipedia Art Deco Style Round Peridot and Marcasite Cluster Stud Earrings & Ring Set in 925 Sterling Silver. A round cluster earring and ring set featuring a round faceted peridot gemstone surrounded by marcasite gemstones. Peridot Earring Information: Number of Stones: 2 Stone Shape: Round Stone Size: 4mm Carat Weight: 0. 55ct Country of Origin: Brazil Marcasite Earring Information: Number of Stones: 24 Stone Shape: Round Stone Size: 1mm Carat Weight: 0. 216ct Country of Origin: Austria Peridot Ring Information: Number of Stones: 1 Stone Shape: Round Stone Size: 6mm Carat Weight: 0. 889ct Country of Origin: Brazil Marcasite Ring Information: Number of Stones: 17 Stone Shape: Round Stone Size: 1. 2mm Carat Weight: 0. 208ct Country of Origin: Austria