This is just an attempt at making the Timelord Stasis Cube from the Day of the Doctor.

Well, I haven't really got much to say on this one. Any ideas on how to improve it?

LMC  

Well...? The only thing I can think of is to move forward and find a way to have it 3-D printed in clear. I'm not that familiar with the filaments used in 3-D printing so I don't know if there is a "clear" one, but if there is...

You've nailed the shape. The only improvements to the render? (Still thinking on this one; you've pretty well nailed it.)

Dino.