Does an old GIA certificate mean used diamond?
- Thread starter tweehoang
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Whiteflash also has Premium Select stones that are fully vetted and graded by GIA.
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think of gia excellent as a circle that is 10 inches across. An AGS 0 circle fits inside the GIA circle with a three inch buffer all the way around. Meaning that GIA might be excellent but AGS has narrower criteria such that many of the GIA excellents aren’t cut well enough to be AGS 0.
GIA excellent cuts have to be vetted to be sure the angles all work together to potentially have great light return. Whereas AGS 0 has 40,000 rays of light hitting it to guarantee great light performance.
GIA excellent cuts have to be vetted to be sure the angles all work together to potentially have great light return. Whereas AGS 0 has 40,000 rays of light hitting it to guarantee great light performance.
Diamond_Enthusiast
Shiny_Rock
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Hi again. I did some more research and you’re right, I don’t want med fluorescent if I am staying within colorless. I know lots of ppl here have suggested BGD and WF but for now I strictly would like to stay with GIA (sorry- I know I’m being stubborn).
If you or anyone has time can you please give me your thoughts on this one? The images look great but I obviously haven’t seen many scope images. Thank you all so much!!!
And also- would you rule out a 63% depth right away? Any wiggle room there?
I would pass on this one too.
The asymmetry (study the Hearts & Arrows image) and the etch channel inclusion would bother me personally. Although at VS1 it is unlikely to cause structural integrity issues, the potential to trap dirt and grim and its location may make it different to clean once set.
If your heart is set on a GIA cert diamond, do consider the suggestion that others have made to get a well cut AGS diamond sent to GIA for certification. The inventory for 2.5ct are scarce compared to say a 1ish ct so it is harder to find a good one. If there is a nice AGS cert diamond and you really want a GIA cert, it may be worth the hassle of sending to GIA.
Diamond_Enthusiast
Shiny_Rock
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Just wanted to clarify my comment about certification. I don't believe an AGS 000 super ideal needs a GIA cert.
What I'm saying is don't limit your search to a GIA certified stone if you are having trouble finding a suitable one.
IMHO the best stone is the top priority, especially since you are spending good money for a large one - don't compromise the stone for the cert. The additional GIA cert expense and hassle may even be worth it - but only if you must have a GIA cert.
What I'm saying is don't limit your search to a GIA certified stone if you are having trouble finding a suitable one.
IMHO the best stone is the top priority, especially since you are spending good money for a large one - don't compromise the stone for the cert. The additional GIA cert expense and hassle may even be worth it - but only if you must have a GIA cert.
Hi again. I did some more research and you’re right, I don’t want med fluorescent if I am staying within colorless. I know lots of ppl here have suggested BGD and WF but for now I strictly would like to stay with GIA (sorry- I know I’m being stubborn).
If you or anyone has time can you please give me your thoughts on this one? The images look great but I obviously haven’t seen many scope images. Thank you all so much!!!
And also- would you rule out a 63% depth right away? Any wiggle room there?
It looks great the symmetry also looks good and in terms of ASET its a good one based upon the proportion of the diamond it is a good one to go for All the Best!!
Diamond_Enthusiast
Shiny_Rock
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Here is a PS resource to help you interpret the H&A image to assess optical symmetry:
You may want to skip to the bottom part on "Grading Guidelines" for the express version (as it is a long guide). Review the H&A image you are considering and make your own assessment on the symmetry.
Hearts and Arrows Diamonds: Everything You Need To Know
Find out why a Hearts and Arrows diamond is considered to be so special and why they cost more. Discover the benefits here.
www.pricescope.com
You may want to skip to the bottom part on "Grading Guidelines" for the express version (as it is a long guide). Review the H&A image you are considering and make your own assessment on the symmetry.
tweehoang
Rough_Rock
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Thank you so much.
In your experience, do the AGS and GIA certificates turn out pretty similar? As in the grading? I’m afraid one will grade higher than the other?
I am not seeing many 2.5 on Brian Gaven at the moment. But I did notice that the prices are lower…are they typically always lower or just depends?
Thank you!
In your experience, do the AGS and GIA certificates turn out pretty similar? As in the grading? I’m afraid one will grade higher than the other?
I am not seeing many 2.5 on Brian Gaven at the moment. But I did notice that the prices are lower…are they typically always lower or just depends?
Thank you!
Diamond_Enthusiast
Shiny_Rock
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AGS is more strict in cut grading but sometimes but not always softer on grading color. As @ringo865 mentioned above, many GIA XXX won't make a AGS 000 grade. However AGS can sometimes be softer on grading color. WolfCBI used to triple certify (AGS, GIA and GCAL) their super ideal diamonds and sometimes the color grade is same for AGS and GIA while other times GIA grades the stone one color grade lower than AGS. That is what I observed.
As for BGD, I love their stones but I wouldn't say they are lower priced than WF generally. Exception is BGD's Blue range which is good value IMO because it is priced lower due to fluor but the stones are checked in-house to ensure the fluor doesn't negatively impact the stone's appearance/transparency.
Super Ideal vendors only use AGS reports for a reason for their top diamonds. They use 3D ray tracing scan technology for a more accurate cut analysis where GIA doesn't and that is why their triple excellent is so broad because they average multiple values. Some say GIA is stricter on color and AGS is stricter on cut grade. For the most part the two labs are on par with each other and the grades come out the same but on some occasions there may be a slight variance.
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Hi again. I did some more research and you’re right, I don’t want med fluorescent if I am staying within colorless. I know lots of ppl here have suggested BGD and WF but for now I strictly would like to stay with GIA (sorry- I know I’m being stubborn).
If you or anyone has time can you please give me your thoughts on this one? The images look great but I obviously haven’t seen many scope images. Thank you all so much!!!
And also- would you rule out a 63% depth right away? Any wiggle room there?
No, way too much leakage. I would notice it. Hard pass for me.
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