I live in canada (as my name would suggest) and I have a couple round cut diamonds out of some old rings that I would like to sell. My problem is that I don not have any certification with these stones. where would the best place to sell them be. and should i consider getting them cert. before I try to sell them. (If so do you have any recommendations as to who could certify them) It doesn't matter if its someone in the States or Canada I just want to sell these stones, I really don't need the ones i have.