Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Zone-refined single crystal. This is the rest of the bar from which the sample three above was cut. It has a combination of the natural molten surface and a more regular surface where it was partially turned on a lathe. Source: Ivan Timokhin Contributor: Theodore Gray Acquired: 10 May, 2006 Text Updated: 14 February, 2007 Price: $100 Size: 5" Purity: >99.99%