Why the pharaohs built the pyramids with fake stones : Davidovits, Joseph, 1935

Davidovits thought he had made a unique discovery in materials science in the 70s, until he realized that the Egyptians had applied this knowledge 5,000 years ago. The existing scientific evidence points to the casting of the blocks that make up the pyramids of Giza, and not to the carving of natural rock to make those blocks. Without the appropriate analytical equipment and techniques, the material of these blocks would pass for natural rock even for a professional geologist.

For some reason, we've been fed the idea that the Egyptians traveled miles and miles in search of a specific type of rock, carved perfect blocks with whatever tools they had, transported tons of them back to the Giza plateau and stacked them up to form colossal pyramids.

They created their own rocks from the natural ingredients that make up natural rocks, by agglomerating them with a synthetic binder. The mixture was prepared at the construction site, transported in straw baskets, deposited in block-shaped molds, pressed and left to harden. In the end, the blocks look just like natural limestone, and remain so several thousand years later.

The same applies to statues, vases and other artifacts, including those made of granite. That's right, it's fake granite. Not the kind of fake granite you install on your kitchen worktop, which is just wood coated with a granite-colored film, but synthetic granite made out of the same ingredients as the natural one.