Thanks alot, Sam. I saw the 1st stone before but actually I can't tell any different. I don't have much knowledge about diamond. I always believe the GIA Cert. But my friend told me even if two stones have the same ranking (3 Excellent), the light return, fire, scintillation and spread will be varied. So the proportion does matter. Be honest, I have no idea about what she said but she said the Ideal Scope Image will help for the final selection. It is quite common for the vendors in the States to provide such image to the customers.
I am quite surprised that the diamond runs out so quickly. The 3rd stone has been sold already. I just got the GIA Cert yesterday morning but at the evening it was sold.
Just out of my curiorsity. If all the three stones cost almost the same, will it affect your decision making?