  Etched button 1. 
This is an ultra high purity vacuum e-beam melted zirconium button that has had its surface etched with acid to reveal the crystal structure.  Kindly donated by Philip Kapchenko of Kaistar R&D, who was disappointed when I guessed right the first time what metal it was.  You might think I'm good at guessing elements, but actually it was just luck: Those transition metals are really hard to tell apart without measuring the density. 
Source: Kaistar R&D 
Contributor: Kaistar R&D 
Acquired: 29 October, 2004 
Price: Donated 
Size: 1" 
Purity: >99.99%
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