  Gallium Germanium Alloy. 
This is a small crystal of gallium-germanium semiconductor alloy pulled by the Czochralski process.  The bubbles on the surface are a defect that may explain why this sample ended up in the surplus market. 
Source: SoCal (Nevada), Inc 
Contributor: Theodore Gray 
Acquired: 10 February, 2007 
Text Updated: 10 February, 2007 
Price: $15 
Size: 1" 
Composition: GaGe
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