  Weird boule top.
Silicon crystallizes into a four-sided cubic structure, which can be seen in the crease lines on the tops of silicon boules, which always have four creases. This one has nine. That is utterly inexplicable to me.
Source: Andrew Goodall
Contributor: Andrew Goodall
Acquired: 8 April, 2009
Text Updated: 9 April, 2009
Price: Donated
Size: 5"
Purity: 99.9999%
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