This isn't one of the 4D "Platonic" solids, just a polytope that a friend of mine likes. It has icosahedral and tetrahedral cells.
I'm a designer for 3D printing, here are some sculptures and math models. In sizes from jewelry to handheld sculpture, they're a mix of geometry, computation and hand drawing.
Some are exclusive to Shapeways, others are also on my main site at http://bathsheba.com.
Thanks for visiting! These are my happy places, I hope you like them too.