Hi my names Ben and I am beginning my search for an engagement ring. I am planning to design it myself and I will need one round brilliant diamond around one carat and two smaller marquise cuts. Not sure on total carats on those two because they will be set in the band so they need to be pretty thin, ill have to see them to know. I want to buy the diamonds online or downtown at the suppliers, my friend said he can get me in there to buy the diamonds because he has connections. I still need a good jeweler to design the ring so if anyone is in the Chicago area and wants to recommend anyone let me know. The question i have, among many others, is if its worth for me to buy an ideal scope to check the cut of the diamond. If there is a marketplace section on ps let me know, maybe someone is selling one. Thanks a lot for all your help.