[W]e discover that for Cheops, for the builder of the most impressive monument of antiquity, its actual name is Knum Kufu: may the god Khnum protect … - Joseph Davidovits

[T]he priests of had long been adept at the art of making extraordinary cements. Cement found in... the Great Pyramid... is still in good condition. This ancient mortar is far superior to cements used in construction today. The modern used to repair ancient Egyptian monuments has cracked and degraded...

For Chefren, same problem, the core is made of agglomerated stone, but this time... the granite... more easily ...was only for the casing of the first and second steps that is made of ...blocks of granite that are split into two and are incorporated into ...the natural step.

The ancient Egyptians are well known for using minerals such as chrysocolla and to produce enamels... They had a word for such products, ari-kat, meaning man-made or synthetic. ...[T]he highest spiritual influence was attributed to stone. ... and other red stones represented the blood of ...Lapis lazuli was associated with daybreak. Chrysocolla was associated with ...the "First Time" event of Creation. ...[M]inerals and rocks had divine properties in a world where all of nature was revered.