Carbon dating diamonds
As an element, carbon occurs in a striking variety of forms.
Coal, soot, and diamonds are all nearly pure forms of carbon.
The name they used, carbone, is based on the earlier Latin term for charcoal, charbon. Allotropes are forms of an element with different physical and chemical properties.
Carbon occurs extensively in all living organisms as proteins, fats, carbohydrates (sugars and starches), and nucleic acids.
Humans have been aware of carbon since the earliest of times. The black color of smoke is caused by unburned specks of carbon.
One of the most common forms of carbon is charcoal.
Charcoal is made by heating wood in the absence of air so it does not catch fire.