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. This piece also shows azurite and hematite inclusions among other minerals. Shattuckite is named after its discovery locality, at the Shattuck Arizona Copper Company mine, Bisbee, Coshise County, Arizona, USA.