I am looking for a 2 carat round loose diamond.. Hoping I can get some advice on what actually makes the diamond worth the investment.. Clearly if you are willing to spend between 15-20k, you want some advice from a reliable source.. Also I would like to let the pros on here know I will be setting this diamond in this band from Tacori: HT2604RD10. Any help will be greatly appreciated, I believe in trusting the pros, so hopefully you guys can find me a ring for this lovely lady I have.. Thanks.. Alan