Have been following this tread and some other forums closely for months. And I have to thank all the comments here and make me understand more about diamond. Before all these, I have to admit I only understand about the size which is the carat without even knowing that carat is only referring to the weight of diamond and not how big it is. Only started to do more in-depth reading when my HTB told me that he is bringing me to choose my own diamond.
Started by going to all the general retailers like Lee Hwa, Soo Kee etc. and basically they concentrate on the design more rather than the quality of the diamonds, and sadly they don''t explain to you much and just tell you the diamond cutting is good as shown in the cert. tbh from the look of it they really look shiny and bright but having read through the tread, realized that lighting in shops are very deceiving. Scopes are required to determine the brightness instead.
The last stop and the place where we made our purchase, jannpaul, as highly recommended by most comments here and also other forums, living up to its name. The sales person very patiently go through the diamond education for 1+hour, showing all the scopes, different lighting conditions and even outside of their shop to see differences between a poorly cut triple excellent diamond vs their super ideal cut. At no time, I feel pressurized to make a purchase, and the shop are so packed on a Saturday afternoon.
At the end of the day, my HTB and I are very satisfied with their service and also our purchase.