8. Lysergic Acid Diethylamide (LSD) – $3,000 per gram
Surprisingly enough, there is another drug that makes the list of the top ten most valuable materials in the world. First synthesized by Albert Hoffman in 1938, LSD was not known to have psychedelic properties until 1943. It was on the market as a psychiatric drug by 1947.
7. Plutonium – $4,000 per gram
Not surprisingly, plutonium is one of the most expensive substances in existence. Its scarcity is a major reason behind the high price of the substance. However, its value is derived more from its usefulness in nuclear applications. In fact, there are only two uses for plutonium. The relatively benign option is to use plutonium to fuel nuclear reactors. The scarier application is for nuclear weapons.