What's the most expensive material on earth per gram?

Question

Must be ONE single material, like gold, diamonds, or man-made elements. Can't be like an airplane.
For example,
gold is around $23/g
platinum is around $40/g
coke is $60-120/g, depending on your sources

Answer 1

Antimatter $62.5 trillion/g

This cannot be disputed.

Antimatter - which powers the fictional starship Enterprise - is now routinely made in huge particle accelerators. One gram of the stuff could keep a car speeding along for about 100,000 years. It is, however, the most expensive material on earth, at $62.5 trillion a gram. Only one sixth of a gram is made in any year. Anti-electrons are used in PET scans in hospitals, and electron "spin technology" will make tomorrow's computers even smaller and faster.

http://education.guardian.co.uk/higher/physicalscience/story/0,,771080,00.html

http://sageofswords.blogspot.com/2005/05/antimatter-most-expensive-material-on.html

Best answer?

Answer 2

Ah now that's the million dolar question isn't it? But seriously, I'd have to say martian meteorite. It goes for $900 per gram.

Answer 3

Californium-252 - it's an isotope of a man-made transuranic element.

Answer 4

Tritium. Dollars per microgram. But that is for one element, some exotic compounds could cost more.

Answer 5

Saffron

Answer 6

Plutonium is available at a cost of about $700/g

Answer 7

Anti-Matter

Answer 8

http://www.sigmaaldrich.com/catalog/search/ProductDetail/SIGMA/P6665

Poly(Pro-Gly-Pro)

this is 330 dollars for 100 MILLIGRAMS

Ok I beat that
http://www.sigmaaldrich.com/catalog/search/ProductDetail/FLUKA/17869
Streptavidin−C-Phycocyanin
367 dollars for one milligram, thats $367,000 a gram

Answer 9

TITANIUM