The Great Pyramid at Giza Egypt is the largest stone building ever constructed on Earth.
The Great Pyramid is located at the center of the land mass of Earth.
The architect(s) had advanced science and geography data and knew the size and shape of the continents on a global scale. The basic dimensions of the Pyramid also include measurements of the size and shape of the Earth.
In the period 3000 - 2500 BC man did not have the tools or knowledge necessary to build the pyramids.
Who built the pyramids? Aliens or men?
The best answer is: aliens (angels) and men.
Quartz occurs abundantly in many rocks, including granite.
On a hardness scale (Moh's relative scale) of 1 to 10 (talc at 1, a penny at 3, a knife at 5.5, glass at 6, and a diamond at 10) most granite is rated between 6 and 7.
http://www.cjfundesigns.com/lc_gem_properties_hardness.htm
Because of the hardness of minerals that make up granite, it requires diamonds along with water to cut and polish granite.
http://mammothgranite.com/
Has it ever been demonstrated that copper or bronze can cut granite?
Never!
Why?
Because that is impossible!
Granite in the King's Chamber
The Kings Chamber (and the Coffer) is constructed of large blocks of granite.
More granite-casing stones on the East face of Menkaure's Pyramid showing an area of finished stones:
http://www.egyptarchive.co.uk/html/menkaure_07.html
http://www.egyptarchive.co.uk/html/menkaure_06.html
