The first image is cut shell. The second image looks like blisters cut away from the shell, hence destroyed and devoid of any value, scientific or otherwise.
The certificate from the lab suggests they test soil and water not gemstones.
Giant Clam (Tridacna gigas) are listed as endangered by
CITES. It is illegal to trade in most countries.
These monstrosities are not collectible nor even remotely desirable, instead an embarrassment for the business and economy of Philippines