Home-made bismuth. 
I made some home-made bismuth crystals, but Tryggvi made home-made bismuth.  He needed some bismuth metal one day, but only had some kind of bismuth salt.  So he worked out a reaction and precipitated it, then he had bismuth metal.   
 
Click the source link for an interesting story about where this sample came from. 
Source: Tryggvi Emilsson and Timothy Brumleve 
Contributor: Tryggvi Emilsson and Timothy Brumleve 
Acquired: 6 September, 2002 
Price: Donated 
Size: 1" 
Purity: >99%
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