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.