Alcatraz Penitentiary - SOLD 2.75" Showcase Concrete giftsforher Some segments have significant crampon

Some segments have significant crampon marks along the edges

Each jewelry piece comes in a decorative box and includes a small information card about the specimen

They will come with individual certificates of authenticity and ship in a sturdy carton

fragments can vary in shape

Pictures on this page are representative of the material but every fragment will be absolutely unique

Alcatraz Penitentiary - SOLD 2.75" Showcase Concrete giftsforher Some segments have significant cramponThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 75" 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.