Gadolinium is another one of the exotics known to chemistry majors as the lanthanides row and due to expense, difficulty in extraction and overall rarity it's remained little more than a lab curiosity. Our Chinese bulk suppliers have about as much affinity to this or any other rare earth metal as they do the steel drums they put them in. Perhaps if they saw them in these shiny perfectly straight-walled little cubes they'd regard them with a little more interest though, to be honest, the demographic slice that appreciates this sort of thing is, well... modest.

Weight of each 10mm cube is 8g.