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3D3DTechnical grade beauty.
I've never seen selenium this pretty, I had to double check that it wasn't actually germanium or silicon, which it strongly resembles. But no, it's actually technical grade (meaning not overly pure) selenium crystal.
Source: Ivan Timokhin
Contributor: Ivan Timokhin
Acquired: 4 September, 2007
Text Updated: 11 November, 2009
Price: Donated
Size: 1.25"
Purity: 99%