Since I am newing to the whole diamond shopping thing (although the advice in this forum has been great!), I did not think very many diamonds came uncertified. However, when shopping around yesterday, one place seemed have quite a bit of stock that was uncertified and instead did the measurements that you would see on a certificate "in-house". Would I be crazy to even consider buying a diamond that has not be certified by one of the major certification firms? They said they would ship it to GIA if that was what I wanted, but it seemed a bit shifty to me. Any thoughts?