The 10 Most Expensive Materials On Earth

1. Antimatter - $62.5 trillion per gram

2. Tritium - $30 million per gram

3. Californium-252 - $27 million per gram

4. Painite - $50,000 to $60,000 per carat

5. Diamond - $1,500 to $100,000 plus per carat

6. White truffle - $3,000 to $10,000 per pound

7. Saffron - $5,000 to $10,000 per pound

8. Vanilla - $2,000 to $4,000 per pound

9. Aphrodite's Hair - $11,000 to $20,000 per gram

10. Moissanite - $800 to $2,000 per carat

Tritium is also rare and difficult to produce, but it is also used in nuclear weapons and research. Californium-252 is even rarer and more difficult to produce than tritium, and it is used in medical research and industrial applications.