As someone who recently purchased a diamond for the Platinum engagement ring I got for my girlfriend. One of the first things I did was a lot of research, and I came across GIA. When I purchased the diamond I made sure that it came with a GIA grading report. They are the most impartial and accurate reporting out there. The only agenda they come with is to ensure that the consumer is getting a quality graded diamond. Buying an engagement ring is a big step in my life and I wanted to make sure I was getting the best. Good Luck to you! Looking forward to seeing lots of pictures.