Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Native graphite. I'd really love a piece of native graphite from the Borrowdale mine in England, where graphite was first discovered (creating the modern pencil industry), but failing that, this will have to do. It's native graphite from New Jersey. Source: Franklin Mineral Museum Contributor: Theodore Gray Acquired: 6 August, 2004 Price: $6 Size: 2" Purity: >95%