Just so you know, absolutely none of that is true.
https://en.wikipedia.org/wiki/Pyramidion_of_Amenemhat_III
I don't know if the person who posted that is sincere or not, but plenty of people sincerely believe this sort of thing when it is posted on Facebook.
How can it be both mystifying scientists for thousands of years, and recently unearthed? They dont even go out of their way to make sure they sound credible in the small paragraph they post. I mean you have to have some respect for art forgeries because if they are going to fake history, they go thru a lot of effort to get the details correct. These facebook ones are just like, I have 5 minutes while I am sitting here shitting, to make something up and get it out there!!
The bar is quite low when your target audience is elderly boomers with long term lead poisoning.