Expert Advice Needed On An Important ????

[Meraj]

Why is it that EGL, GIA, AGS all have different cuts representing "ideal" ???? Please help.

 

[oldminer]

All of them have certain common characteristics. Some are more liberal, meaning commercially palatable to dealers, than others. That is the main difference. If you look at the AGA 1A Ideal range you will see a much less liberal view of "ideal", but you will have a far more difficult time finding such a specific cut in what passes as a "fine" diamond.

If the major labs had very tight requirements there would be no commercialization of "ideal" cut diamonds. Then the public would only have more less well cut stones to select from. That's the way it was 10 or 20 years ago, so progress has been made. It is just slowly evolving. The diamond business is a very traditional one and change is not all that rapid.
Besides, it costs a lot of money to become a market leader or a brand maker. Playing it slower when profits are tight may be sensible.