Cabochon is approximately 50 mm long and 29 mm wide. Bail is sterling silver. The pendant comes with an 18" black satin cord. If you'd like a different length, please let us know. We have 16", 20", 22", & 24" cords available. The Multi Colored Jasper with Green Opal cabochon is from Indonesia, and made into jewelry in the US by Chris and Theresa.