Alcatraz Penitentiary - 3.019" Showcase Concrete dinodung 037" and comes from Chevrolet's

037" and comes from Chevrolet's St

Venice Brick

where it accelerates protons to near light-speed and collides them to study the fundamental nature of matter and the universe

The foil square measures 2mm x 2mm

hollow spherical stones that are full of crystal growth formations

Alcatraz Penitentiary - 3.019" Showcase Concrete dinodung 037" and comes from Chevrolet'sThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 3. 019" along the widest point. This specimen, from the famous Alcatraz Island, saw some 1,500 prisoners pass by it during the prison's operation. A certificate of authenticity is included.