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3D3DSmall silicon boule.
From the source:
This is the top of a small diameter silicon crystal produced in research. The small cutoff circle is where the seed crystal was attached, where that seed was lowered into a pool of molten silicon and this crystal slowly pulled out, sticking to the solidified material by surface tension and then solidifying itself.

Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 27 December, 2008
Text Updated: 1 March, 2009
Price: Anonymous
Size: 1"
Purity: 99.9%