Halal research on Instagram: "Quran about construction method of Egypt from clay not carving stones This theory, pioneered by chemist Joseph Davidovits, argues that the Egyptians did not carve all the stones but instead used a chemical process to create them on-site. Method: Soft limestone rich in clay (kaolinite) was dissolved in water to create a slurry. It was then mixed with lime and natron (a naturally occurring salt) and poured into wooden molds. Supporting Evidence (Proponents): Microscop