Astatine – $1 Trillion/Kg

When you’re trying to get your hands on the rarest of rare substances, you’ve got to pay up the price. This is why Astatine is such an elusive material. The one reason why this element is so expensive is its possible ability to treat cancer!

The terminal disease that plagues the world has no known cure as of now. Treatments are all that patients depend on, and the therapeutic attributes of Astatine are what makes its price sky-high, but researchers have clocked that it is challenging to study the element. To that end, even some physical properties of the substance are unknown.