Hi,
I have two Spinosaurus teeth, both said to be from Khouribga Morocco but bought from different sellers. Both look convincingly real to me but I'm an absolute novice. One of the two teeth (but not the other) is becoming hollow at the non-pointy end due to the sandy contents crumbling. Gently tapping removes more. The reddish outer enamel surface seems fine though.
So is that a bad thing perhaps indicating a fake? And if it's normal and OK is there an 'acceptable' way of preventing the problem?
Thanks,
Tim