I agree with your statement. The issue is that they cannot keep it consistent. Why is it that IGI Antwerp can produce stricter grading ? It might boil down to the history of the place and its relationship with cutting as well as the demand of customers in that area, as well as the fact that it is the headquarters. Is it disturbing ? Maybe, if you don't know about it, but if you DO know, this is an opportunity to get something better for cheaper, due to the misconception that all IGI grading is the same.
Another reason they can't keep it consistent is cos it is graded by a human, even GIA is just MORE consistent, and does not guarantee a stone which is resubmitted will get the same grade, its is written in the disclaimer in the cert itself. One of the reason people go to AGS and GIA is a higher consistency.
Your analogy of Tiffany is not correct... The shops in different places sell the same item in different places, but chances are they are produced in the same place... Just like you buy a Toshiba or Fujitsu laptop you can pay an additional $1000 to get the exact same model but made in japan. If everything under a brand is the same and i offer you 2 cars, same brand same model, one made in Germany and one made in China, the china one $10.00 cheaper, which would you choose ? After all, according to you, same brand same quality.
Lastly, i never said EGL is good.... i only said those by the HK Lab is good, big difference. EGL probably has the largest inconsistancy between labs.
This is unfortunately true and if you intend to resell, your diamond with a GIA or AGS cert WILL retain value better, so i agree with you here. As to why it is lower price, it would be due to lower denmand, due to misinformation. I wonder why... just kidding. But its better for those of us in the know as we can find better stones for lower prices as long as you know what to look out for.
Yep, i have read this article and for most part agree with it given the context. You realize that pricescope is a FOR-profit site based in the US and that is the context and the labs they will send to right ? It specifically says there EGL-USA. Also, the article is from 2004... There was a more recent one posted some months back on the forums, let me see if i can find it as it would be a better reference.
I would also like to ask you, if you have with your own eyes, done a blind test between super ideals from different labs graded the same in terms of color and clarity ? Because what i speak of is not only from reading but also from experience. It might simply be coincidence that what i saw just happened to present the information to me this way. Unfortunately i no longer have access to the IGI stones or i would invite you to do a blind test.
If you wish to quote pricescope, here are some recent forum threads (1 from 2011, 1 from 2012, 1 from 2013) about IGI. Trade members hold IGI in pretty high regard, Also when referring to labs they usually refer to the place or branch as well, such as EGL-International. There are of course many others, but i think this should be enough. Yeah, i enjoy participating and reading pricescope forums and check there everyday as well. Good place to learn and pic up more, but you should take note of the limitations, culture and the context of the information provided as well, and not just take it blindly as information by non trade members tend to be a bit wonky sometimes.
Here's my return quote by one of the most respected trade members John Pollard. Also, seems EGL-Asia, which is the Hong Kong branch is out of China cos people nowadays prefer foreign certs. They instead franchise their name to someone else. Will try to check out these stones graded by a third party if i get the chance. And now, IGI HK has taken their place as the lab to go to for top notch cut quality grading
And in case you still doubt that there are different standards in consistency, couple the fact that IGI is the preferred grader for H&A and the following comment.
It is also is one of the reason why I used to look at many H&A locally and nitpic... Some H&A i have seen locally and even of those posted here would not qualify, but there are of course some which are truly good as well. But these days I have come to accept that different places different grading/expectations and this is simply the level/range which is accepted as H&A in Singapore, and more importantly, available here.
This is also why I say the location of the lab/branch and its target market and their expectations has an influence on the strictness and consistency of the certs and grading.
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UPDATE :
Found the latest comparison, June 2013, now EGL Swapped... EGL - USA up and EGL - HK down... hahaha. IGI is now graded pretty high, practically on par with GIA, sadly AGS not in the list. As it stands, I retract my statement about EGL-HK, no need to consider liao. Maybe they secretly send the diamonds to the shanghai lab. LOL. BUT IGI still good. Definitely worthy of consideration, too bad they never state which location/branch they send to
Lastly, as can been seen and commented in the article as well, IGI is practically as good as GIA, yet their cert commands the second lowest price... Isn't this great for consumers that know this and know how to choose their diamonds ? Also, i doubt they sent it to the Antwerp branch, so if you can get one from there it would be even better, esp those I saw which were graded more strictly then even GIA would have graded them.
Diamonds.net - Grading the Graders
Newsflash: Grading labs are not all the same. : RockyTalky • Diamond Jewelry Forum - Compare Diamond Prices, Discussions & Diamond Information