This is a natural emerald gemstone, but there are size differences between the left and right. There are inclusions. I believe it was rhodium-plated. The clear color is rhinestones. Regarding materials: The description at the time of purchase stated "silver with rhodium plating," but there were no markings. Please note that there are no certificates of quality. I've included two accessories as a bonus: A gold-colored ring with light blue and clear glass, made for an ear cuff. An off-white enamel-style gold-colored ring. Thank you for viewing.