Been looking at stones for a couple of months now and have settled in on G-H Color and VS2-SI1 clarity based on what I have seen. However, I am so confused on cut. Different definitions, certifications, etc. I am wanting to stay in the $18K range for a round brillant. The stones I have been looking at are 2.25-2.40 Carats. What is the best way for me to assess cut when visiting with diamond brokers and jewelers? Thanks!