Praseodymium Cube under oil
Periodic Table Poster   My periodic table poster is now available!Periodic Table PosterPeriodic Table PosterPeriodic Table Poster
3D3DCube under oil.
This is a substantial cube of a relatively reactive rare earth (hence the "under oil" part).

I chose this sample to represent its element in my Photographic Periodic Table Poster. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of.
Periodic Table Poster

Source: David Franco
Contributor: Ed Pegg Jr
Acquired: 16 August, 2002
Text Updated: 4 May, 2007
Price: $43
Size: 0.4"
Purity: 99.99%