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comparison of 2 diamonds contrast arrows and depth

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joshua1745

Rough_Rock
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Aug 31, 2005
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I had a Q re: 2 diamonds. Under a hearts and arrow viewer the arrows appear stronger for diamond A (my diamond) than diamond B but well formed for both. But with the unaided eye the arrows are visible on Diamond B and not on diamond A. Diamond B seems to have more spread for the weight but is more shallow. Both are AGS 000. Does the depth of the diamond affect the contrast of the arrows (i.e. shallow = more contrast)? Would these darker arrows cause more contrast leading to more scintillation. Both seemed to have equal sparkle in person. What would be the expected reult of light return.


Diamond A 1.23ct HCA score 1.1
Sarin: 6.96-6.98 x 4.22
depth: 60.7% table: 56.5%
crown: 34.9deg
pavilion 40.7deg 42.9%
Girdle: thin to med faceted (1.1-1.4%)


Diamond B 1.19ct HCA score 1.2
6.92-6.95 x4.15
Depth 59.9, Table 57
pavillion 40.9 deg 43.1%
crown: 34.3 deg. 14.7%
girdle: thin, faceted
 
Date: 9/21/2005 1:14:55 AM
Author:joshua1745

... the arrows are visible on Diamond B and not on diamond A.
That depends on where the camera was when the shot was taken - from a bit further the arrows are no longer 'black' at all.

Those two diamonds ate twins
1.gif


Just my 0.2...
Garry had this effect on display on an old thread and some revealing pictures, but they didn't turn up just now.
 
This was not from a camera picture. This was from a actual personal observation with the unaided eye. Diamond B seemed to demonstrate the arrows with the unaided eye easily and I cannot see them in Diamond A at all. However under the H&A viewer the arrows appear stronger in Diamond A.

Any thoughts? Can anyone run Diamcalc on Diamond B. (I allready have it on A)
 
what do you mean the arrows appear ''stronger''?
 
they just stand out more; i.e. there is more contrast (white against red). But there is no difference between the arrow thickness.
 
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