Gemex Certificate the Hallowed Solution to Diamond Fire & Scintillation ?

[nsr1]

Hi, with diamonds, round cut I am specifically speaking about, there are cutting parameters and guides to help you choose the best cut to maximise the potential brilliance, fire & scintillation.

This is what we all generally strive for in diamonds, light performance, however this is not a guarantee using just the cutting numbers.

I have heard Gemex quantifies light performance for these 3 metrics on a scale.

My question is:
a) Has anyone used Gemex certs and would recommend them in terms of their ability to accurately describe the light performance of a diamond in real life viewing?
b) If this certificate does seem to be the answer for light performance, should cutting angle info and aset/ideal/H&A scope images be used as a secondary tool to choose a diamond after one has viewed a Gemex certificate?

 

[oldminer]

Gemex has been around quite a while. It is most useful as a "sales tool" for those firms that use it, but not a truly satisfactory solution. Lots of progress has been made since Gemex was first marketed.

 

[Garry H (Cut Nut)]

A lot of cutters know how to achieve top GEMEX results that are somewhat independant of what we call cut quality around these here parts!