Helium-3 is one of the rarest and most valuable isotopes on Earth, with reported prices of up to US$18.7 million per kilogram, more than 100,000 times the price of common helium (helium-4). Against ...
This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium. When you purchase through links on our site, we may earn an affiliate commission.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results