The setting is Sterling Silver. The main stone type is Onxy. The accent stone(s) are onxy bead. The overall pendant width is approx. 1-1/4"". The overall pendant height is approx. 1-1/2". The thickness is approx. 11mm. The bail opening size is approx. 7mm. The color is a deep black. This is considered a large pendant. This piece is labeled with the Roycroft Renaissance Mark.