Minecraft themed cycles test

Just a quick cycles test I made in Blender 2.62 to get myself oriented with the new set-up (Last version I used before this was 2.58. Or was it 2.48? I have no clue.) For those of you who haven’t played Minecraft, this is a diamond block in the middle of a room fo wooden planks.

Good luck with the new setup.

I dont know, but the edges look weird to me…
Otherwise, looks great.
Could you please share the node setup you used to dont blur the textures, and maybe the textures themselves?
BTW, doesnt a diamond have sharp refractions?
Thanks in advance,