Rhodium - $58 / Gram

Rhodium is yet another rare and expensive chemical element. Rhodium's symbol is Rh, and its atomic number is 45 in periodic table. Rhodium is a member of platinum's family. Rhodium is mainly used as a catalyst in automobile, which converts harmful unburned hydrocarbons in automobiles to less dangerous gases. The price of Rhodium is $58 / gram.

This Post Belongs To 15 Most Rare and Expensive Materials In The World