There are some pretty tridacna pearls. That is not one of them.
We have a complete reference to the story of the pearl of Allah on this forum, which pearl had hoaxy and fraudulent elements from the moment the pearl was found, to how it left Palawan to the over-inflated value, not one penny of which was ever seen, because no one would pay any cash for the actual pearl.
Big, ugly, tridacna pearls may have some value for collectors, but will never be very interesting to people for jewelry purposes. I'd say that pearl could be worth what someone would pay for a collection- $20- $200. It has no intrinsic value. The amounts touted for the Pearl of Allah are all hype- even the supposed 200k paid for it by Hoffman was nothing but an unpaid promise. From that original unpaid amount, the price was hyped, by appraisers who never saw the actual pearl, only earlier appraisals, up to $67,000,00 for courtroom purposes- about 5 years ago. Another, equally large pearl has been reported, but it has not yet seen any real cash, yet, either.
This pearl will not make your fortune, nor anyone else's. It is time to realize what a giant fraud was perpetrated with the Pearl of Allah. It was hyped by a carny, then a couple more carneys took over the hype, but no one has ever seen any cash from the Pearl of Allah and I doubt anyone ever will.
It is obviously a tridacna pearl and can be certified by any malacologist as authentic. it is really not a GIA kind of thing and spending that money will not help its sales value, IMO