Calcite?

Would the mineral Calcite "amplify" light any? I remember calcite would cause an effect known as birefringence and I have been searching on line for a while to find this answer. Anyone out there know if i you could double artificial/natural light with this stuff, thanks in advance.

bump.
these are cool
http://www.dayliteco.com/pages/products_skylite.html
I just got my electric bill and i am thinking of changing up the grow a bit

Nobody Seriously? I guess i should of posted in grow room design, but i thought this was more of a general question, come on RIU, i know there are some smart mo fo's on here.