The C60 molecule, nicknamed Buckyballs, is the roundest molecule formed in nature.  This crystalline structure is different from the diamond or graphite crystal in that distinct molecules form the unit cell of the crystal.  The C60 molecules are arranged into a face-centered-cubic unit cell. The sides of this cubic cell measures 14 Angstroms. Each C60 molecule have a diameter of 10 Angstroms. The molecules are held together in the crystal by weak Van der Waals forces. In this space-filling model, each carbon atom is represented by a wedge. The carbon 60 atoms are bonded together in an array of hexagons and pentagons, like a soccer ball. These molecules are called buckminster fullerenes in honor of Buckminster Fuller who first designed similarly shaped geodesic domes.