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Oldish GIA ID & Origin report?

Rad_Fan

Ideal_Rock
Joined
Sep 1, 2018
Messages
3,173
How accurate would it be for a corundum given that gem treatments have changed over the past 20 years?
 

marymm

Ideal_Rock
Premium
Joined
Apr 21, 2010
Messages
5,531
If the stone itself matches up to the GIA report and thus is at least as old as the GIA report date, why would anyone perform additional treatments on the gem?

Or, do you mean new tests detecting gem treatment have developed since the date of that report, such that if the gem were to be re-examined/re-tested, previously undetected treatment would now be identified?

In any case, at 20 years out, I'd probably request the purchase be conditional on a new GIA report, with full refund should the new report not match the results of the prior GIA report.
 

chrono

Super_Ideal_Rock
Premium
Joined
Apr 22, 2004
Messages
38,364
If it's something I already own, I would not send for an updated lab memo.
If I am selling, I will send it off if the potential buyer requests it (good sized / expensive stone).
If I am the buyer, I will definitely request one if past a certain price point that I am comfortable with
 
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