Brillancescope and different shapes

[Slykat12]

Please forgive me if this was answered prior-I don''t think it was- Here is the question-

We all know round diamond score higher in general than most if not all shapes of diamonds on the brillancescope''s 3 parameters-But what I want to know is if all other stones are being judged against round parameters or their own shape?

For example take a round b pop it in and you get 3 highs-
Next pop in an oval and get three highs

Am I to assume these stones are performing equally regarding light return? OR is the round only better than other rounds scoring less than 3 highs and the oval being compared to other ovals?

i.e Does the Bscope "handicap" for certain shapes?

 

[Rhino]

Hi Kimberly,

We all know round diamond score higher in general than most if not all shapes of diamonds on the brillancescope''s 3 parameters-But what I want to know is if all other stones are being judged against round parameters or their own shape?

Their own shape. However, if you''re interested, if you drop my assistant Tim an email through our contact page we will show you how any stone fares on the round scale for comparison.

For example take a round b pop it in and you get 3 highs-
Next pop in an oval and get three highs

Am I to assume these stones are performing equally regarding light return?

No.

OR is the round only better than other rounds scoring less than 3 highs and the oval being compared to other ovals?

i.e Does the Bscope ''handicap'' for certain shapes?

Gemex has designed the Bscope to analyze each shape within its respective shape just as AGS is not grading princess cuts on a round scale. There is a logic to this even though some would prefer to see *all* diamonds on a linear (ie. the same) scale. If we can help answer any questions feel free to contact Tim as I am not here as often as I''d like to be and am busy updating all our tutorials before a final publishing of our new site.

Thanks for the question.

Kind regards,

 

[Slykat12]

Why thankyou Rhino I assummed that but wanted to be sure. Dashing pic there too!

It would seem Gem Ex would need to find a great amount of diamonds of all the many shapes and cut quality though to have the best results. If the diamond sample size is to small, or suffers from restriction of range, results would not be so precise.

How do we know there were very high scoring diamonds included in that group as well as low scorers?
How do we know the sample size?
If someone submits a rare fancy how many stones will it be compared to?

Does gem ex continually add to the sample size every stone they measure for a client-thus fine tuning the results -making the process more precise each time?

I recall in College that when a class bombed a test with scores 40-60% the instructor would curve the results. thus the one scoring 60% of the answers correct would be given an A. That person got the A not because they truelly mastered the subject but because the class suffered from a restriction of range "they all sucked " and they sucked within a tight parameter.

Comparative rating scales result in ordinal outcomes.
Thus the results are relative rather than absolute judgements.

Still useful of course!

I would love to see the bscope technology progess.At present I don't think it suitable for some shaped stones.


mmm just the ramblings of a grad student in limbo