  Cast ingot. 
I made this one-pound (approximately) ingot by casting molten antimony into a graphite mold.  When it was cooled to the point I could pick it up with a paper towel, I noticed a must unusual thing: The block was pinging like a bowl of Rice Crispies made out of silver bells.  It went on for minutes and was really quite beautiful, much nicer than the tin or indium cries one reads about.  I wonder if it's a coincidence that three elements in a row in the periodic table, indium, tin, and antimony, all cry when cooled or bent.  I hope to record this antimony sound soon. 
Source: www.theantimonyman.com 
Contributor: Theodore Gray 
Acquired: 8 August, 2003 
Price: $4/pound 
Size: 3.5" 
Purity: 99.9%
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