The are all composed of carbon (although coal commonly also contains other elements such as sulphur).
All are allotropes of carbon.
Coal, graphite, diamonds...
Graphite, coal and diamonds are all thought to be products of the decay and compression of vegetable matter from millions of years ago. Diamonds progress from coal.
Diamonds, coke, coal, graphite, fullerenes
carbon
Graphite is Carbon, the chemical symbol is C. There are many forms of graphite, such as coal, and diamonds. Even the human body contains carbon. It is dug straight out of the earth just like mining coal and diamonds.
No coal is a type of carbon structure. Just like graphite, buckeyballs and diamonds.
jewelry (diamonds) fuel (coal) drawing (graphite)
yes all of them are minerals.Another AnswerNone of them are minerals: coal, diamonds and graphite are formed from the mineral carbon. There is a class of minerals, according to Wikipedia: "The halide minerals are the group of minerals forming the natural salts."
The answer you want is carbon.
All forms of carbon.
Coal, pencil lead, and diamonds all contain carbon.
Diamond, coal, graphite, coke and buckminsterfullerene are composed primarily of carbon and are insoluble in water.