I got my last batch at the website a pp posted about - WholesalersUSA.
Great gems - what you want are the large ones that they sell - they are nice and rounder than the ones I have bought in the past from Garden Ridge (my Micheals and Wal-mart doesn't sell them - they sell the smaller ones) - they are also thinner (flatter?) than the ones I have gotten in the past.
I know last time I bought from them they were planning on having shaped gems soon - I might have to go check them out.
I have posted some one mine (using the gems from Garden Ridge) in my gallery - don't know if this link will work or not
Gallery at Splitcoaststampers