Diamond 1 (1.22 ct)
Report GIA
Table % 55%
Depth % 61.8%
Crown Angle 35
Pavilion Angle 40.6
Lower Girdles 75%
Star Facets 50%
Girdle Thickness t-m
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Diamond 2 (1.14 ct)
Report GIA
Table % 56%
Depth % 61.7%
Crown Angle 35
Pavilion Angle 40.8
Lower Girdles 75%
Star Facets 50%
Girdle Thickness M
Btw, with an Idealscope, can you use it to see hearts from the bottom of the diamond?
Diamond 1 (1.22 ct)
Report GIA
Table % 55%
Depth % 61.8%
Crown Angle 35
Pavilion Angle 40.6
Lower Girdles 75%
Star Facets 50%
Girdle Thickness t-m
____________
Diamond 2 (1.14 ct)
Report GIA
Table % 56%
Depth % 61.7%
Crown Angle 35
Pavilion Angle 40.8
Lower Girdles 75%
Star Facets 50%
Girdle Thickness M
Btw, with an Idealscope, can you use it to see hearts from the bottom of the diamond?
Thanks for responding lovedogs. Is it normal for the IS image to show a ring of pink around the center? Also, the first IS image seems to have missing red areas - should I be concerned?
I’ve seen on JA and WF with IS images with full red throughout and not sure if that’s due to lighting or method of taking the photo.
I was taught by @Karl_K to pay attention to the color of the very center of the stone and use that as a gauge for color. If the center were dark red then I'd be concerned about that light pink "ring". But since in these pics the very center is pink in the same color/tone as the outer ring, its something about the lighting /picture vs an issue w the stone.
They both pass the IS test and are even closer in angles and % than the GIA rounding would indicate.
What are the color and clarity grades for both?
Report number or a copy of the clarity plot if they have one on the report would be nice.
The first one either has a crystal* under the table or a spec of dust on it.
*Most likely a crystal but could be another type of inclusion.
Yes need a h&a scope to see the hearts, or a toilet paper tube to get images that work but are less precise than using the h&a scope.
The 1.14 is h&a.
Can you double check those regular images and make sure you posted the right ones?
Something is odd about them.
Loving the 1.22 more than the 1.14, but either would be a solid choice.
Don't bug me at all after seeing the heart image.
Ok the video brought some clarity. :}
I see the crystal and the bow ties at the arrow shaft junction with the arrow heads at 3 and 6 are still strange but further investigation shows that happening in the same place with other combos so its environmental.
The image is the right one and the crystal should be eye clean.
I think the 1.14 is a safer choice just because you have more information.
The other one may or may not be h&a and you said that's important to you.
In not allowed to mark up vendor pictures so had to find one of my computer generated images that shows it.
Totally different combo that is expected to show it....
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JA only provides heart images if the stone is part of their True Heart (TH) collection. So from that perspective, yes the 1.14 is a H&A stone.
More than that, every MRB produces heart looking shapes. However, it’s the symmetry exhibited (or not) that determines if it’s a true H&A stone. Not all JA TH stones are as tightly cut as WF ACA stones and similar but the 1.14 TH has a nice hearts image. Below is an example how these details matter.
Part of the experience of buying a H&A stone is the confidence of getting a high performing stone and having tangible data to confirm that on the front side. Things like ASET, idealscope and hearts images helps us confirm quality.
As you probably noticed all ACA stones have that information readily available for review so from that perspective it’s less risky buying because you know more about the quality level of the product you’re buying. Just as a TH stone has more information readily available to review than a standard 3X stone. However, in this case an ACA still provides more data than a TH stone in two ways.
1. An ACA will either have an AGS 000 lab report with computer generated ASET image on the report. Or newer stones dated 1/2023 or later ACA stones will have GIA 3X report with an AGS light performance addendum. The reason for the change is AGS merged with GIA in 12/2022 and no longer provide standalone lab reports; however, GIA now offers an option to obtain the AGS light performance addendum for an extra fee. Not all GIA 3X stones come with this very valuable addendum. I’ve not saw any TH stones with the AGS addendum but all newer ACA’s have them which also have a computer generated ASET on the addendum.
2. In addition to the computer generated ASET images shown in the lab reports, WF also makes actual ASET images available for their ACA stones as well. While similar to an idealscope image, you sometimes see additional details about light performance that you may not easily pick up with an idealscope.
Another key difference between JA and WF, even when comparing TH and the ACA lines are the upgrade policies. Granted this has nothing to do with light performance but it may affect long term purchase effects. For instance JA requires you spend 2X the original amount each time you upgrade. That may be prohibitive in trading up or even sideways. With WF, you simply have to choose a stone that is equal or higher value. No other restrictions. This allows you do the obvious size upgrade but can also be used to go sideways by going with higher color and/or clarity while staying at the same size or smaller and keeping dollars similar to your initial purchase amount. Or sometimes buyers choose to go down in color or clarity and get a larger size for near the same dollar amounts. You just have more options to trade on your terms. Depending how you exercise those options, this can be a very valuable perk that is sometimes overlooked.
Aside from additional information and a better upgrade program a ACA would offer, the TH should still be a nice performer.
Thank you for the detailed explanation of the two lines. Something I’ve been wondering is, if JA does not label a diamond as a TH, can we know for certain that the diamond is not at that standard (I.e., does JA test all there diamonds they sell to determine if it’ll go in its TA collection)?
Also, is the center whiter portion of the 1.22 IS image showing that the diamond is deeper in the center and showing light loss? Im speaking about the what appears to be lighter area right in the center of the IS.
Light centers are caused by over bright backlight combined with the natural leakage present in any MRB.Also, is the center whiter portion of the 1.22 IS image showing that the diamond is deeper in the center and showing light loss? Im speaking about the what appears to be lighter area right in the center of the IS.
I still prefer the 1.14 (I think the first one you posted pics of). But I agree that if you want perfection then go with an ideal vendor like WF or BGD
Light centers are caused by over bright backlight combined with the natural leakage present in any MRB.
Then in this case you get a slight tilt which is causing the variation. The longer arrow shafts point to the direction of tilt.
Image below is computer generated with back lighting only which shows the principle of nominal leakage present in every MRB. The exact pattern will vary with different angles and %.
Anything simular in brightness to the lightest center spot is not significant leakage.
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