The density, an intensive physical property that measures how efficiently a substance is spatially packed. The relationship between the mass, volume, and density of an object or substance is:

The densities of the various forms of carbon are shown in the table below.

Form of Carbon	Density (grams/cubic centimeter)
Amorphous carbon	1.8 - 2.1
Buckminsterfullerene  C60	1.69
Graphite	1.9 - 2.3
Diamond	3.50 - 3.53

 

This drastic change in density between the various forms of carbon is a consequence of the crystalline structure that each substance adopted. The macroscopically measured density is usually slightly different than that measured using X-ray diffraction because of defects and/or impurities within the sample.