Legends say the intricate patterns etched into this die can break lesser minds, so don't be surprised when you throw this d20 and everyone at the table freaks out. It's maaaaaaaaaagic.
Is your >$500k commercial 3D printer busted? No worries, I've got this model up on Shapeways: http://shpws.me/PLoQ
So, I made another d20. Like the last one, it was modeled in the free version of Sketchup using the basic toolset. Making a d20 is easier than it looks and I recommend you try making one someday. Having to repeat everything 20 times can get tedious though.