I hand cut this freeform shaped focal bead and finished it with a polished finish. 2.5mm drill hole. Measurements are shown in the listing title. CHAIN NOT INCLUDED. I made this using a beautiful and striking stone called shattuckite which came from the Congo. It is a rare secondary copper silicate. Shattuckite is named after its discovery locality, at the Shattuck Arizona Copper Company mine, Bisbee, Coshise County, Arizona, USA.