Egyptologists also insist that all of the megalithic stone constructions of Egypt were produced with nothing more than copper chisels and stone hammers. Many of Egypt's ancient monuments are constructed of granite, one of the hardest stones in existence.
Many of the features of those monuments are of exceedingly fine and sharp detail, such as the famous granite statue of Rameses, which is also symetrical in three dimensions to a mathematical precision that can't be matched today.
This scares me.