Light Emission - Reflection, Refraction

[phosphate]

Hi, I was hoping to get some advice on a diamond im looking to purchase.

My question is referring to the light that is reflected of the diamond. After reading many many many internet documents I have quickly learnt that not all diamonds are created even, though they might have the same measurements, clarity or depth the diamond can be very different in many ways.

To the untrained eye all diamonds can look nice. I''m happy with the colour, clarity and size with this diamond, however I''m worried about light leakage. I don''t know if this diamond has light leakage, hence why im here, hoping to get some advice.
I have been reading about the idealscope tool which shows light leakage in diamonds and I''m quite impressed.

Is there another way to tell what cut or how much light this diamond could potentially have ?

The diamond was certifed by HRD and the below details are from the certificate:

shape: brilliant
weight: 1.63
clarity: VS2
Fluorescence: medium
Colour grade: exceptional white + (D)
measurement" 7.46 - 7.49 x 4.64
girdle: medium 4% faceted
cutlet: pointed
table width: 62%
cr. height: 14.5%
pav depth: 43.5%
finish grade: very good

Any help or advice you can provide would be appreciated.

 

[strmrdr]

based on the hrd percentages which aren''t very accurate this is the best it could be...
As you can tell this is one to pass on.

 

[phosphate]

Hi karl, thanks for the reply.

What tool are you using to generate the light reflection from the measurements given ?
Or is it just experience ?

 

[Garry H (Cut Nut)]

Date: 10/22/2008 4:39:31 AM
Author: phosphate
Hi karl, thanks for the reply.

What tool are you using to generate the light reflection from the measurements given ?
Or is it just experience ?

At perpendicular 17% of a ray bounces off the diamond back in the same direction as the light.
It is not until the angle of incidence is 82 degrees tilted that 50% enters the diamond and 50% is reflected.
It is hard to get light into a diamond and hard to get it out once it gets in.
That is one reason why they sparkle so much.

My signature has a link to the site that explains the ideal-scope that Storm made with a comp simulation with DiamCalc which is also explained there.