- Antimatter, the most expensive material in the world https://mundocurioso.es/en/antimateria-material/ 5 comments science
- The 16 most expensive substances in the world and what makes these 16 materials so expensive http://learni.st/users/stevesegovia/boards/29279-the-16-most-expensive-substances-in-the-world 12 comments science
- Scientists create world's most expensive material, valued at $145 million per gram http://www.sciencealert.com/scientists-create-world-s-most-expensive-material-valued-at-145-million-per-gram 5 comments science
- Scientists create the world's most expensive material, endohedral fullerene, valued at $145 million per gram http://www.sciencealert.com/scientists-create-world-s-most-expensive-material-valued-at-145-million-per-gram 17 comments technology
- Scientists create world's most expensive material, valued at $145 million per gram http://www.sciencealert.com/scientists-create-world-s-most-expensive-material-valued-at-145-million-per-gram 4 comments worldnews
- Oxford scientists create most expensive material in the world, valued at £200 million a gram http://www.independent.co.uk/news/science/most-expensive-thing-in-the-world-endohedral-fullerene-science-oxford-a6763356.html 8 comments technology
- Followup from "The Roundest Object in the World" video... why is the material (silicon-28) to make it so expensive and how would they make it? http://youtu.be/ZMByI4s-D-Y 12 comments askscience