After the search for the perfect loupe, here is some information about cuts and shapes of diamonds:

http://en.wikipedia.org/wiki/Diamond_cut

http://www.gia.edu/research/1383/228...cle_detail.cfm

BTW, the real meaning of "Diamonds Are Forever" is once you buy them, you're stuck with them. (When you try to sell them you get 007 percent of your price back)