Just got this from a diamond info site....

[davisc02]

Is this true? I always thought it was the cut that was the most important thing for fire.

"I have seen a lot of sites telling you the exact cut of a stone showing all the dimensions and ideal cut perfect cut best cut and then you get a set of new cuts coming out that are meant to give more fire. The amount of inclusions in a stone affects the fire more than the cut. The colour effects the colour of light coming out of the diamond I and above I describe as a white fire diamond because of the colour you will see.( Main Lab reports for colour EGL )"

 

[winyan]

It's the cut. Not how many facets, but the way each facet is crafted.

win

 

[caratgirl]

What's the site? Maybe some experts can answer this post instead of just opinionated amatuers like me

 

[valeria101]

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On 11/13/2003 12:36:30 PM davisc02 wrote:

Is this true? I always thought it was the cut that was the most important thing for fire.

'I have seen a lot of sites telling you the exact cut of a stone showing all the dimensions and ideal cut perfect cut best cut and then you get a set of new cuts coming out that are meant to give more fire. The amount of inclusions in a stone affects the fire more than the cut. The colour effects the colour of light coming out of the diamond I and above I describe as a white fire diamond because of the colour you will see.( Main Lab reports for colour EGL )'
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True, however, it takes an I clarity grade to have inclusions obstructing light and a dark color to have colour obstruct or tint or reflected (refracted)light. The above considerationg should be just a moot point for anything from IF to SI2 and from D to M (and beyond). So, I hope that website was about fancy colors and champagne diamonds! Just my take...

However, the comment does rise a good question: is there a top limit for how much light can a diamond prism return to the viewer (even if not cut in a warable way, or traditional way). Maybe this will make good Christmas fun to calibrate...