The stones used to produce these vases are also used for some of the other statues of Egypt and it almost redefines modern technology and there’s a hard index of 10 like diamond, but these stones are harder than steel files !? the Egyptians are suppose to have had only copper tools to work these stones and shape them up ! this is difficult enough and almost unimaginable as far as the sculpture is concerned when we come to hollowing out stone vases with these hard materials like granite it’s really unheard of.
These mysterious vases are now housed in prominent museums such as the Louvre, the British museum and the Petrie museum, and While metal chisels could be used to shape soft limestone, the metals was available to the ancient Egyptians were copper, bronze and during the first millennium BCE wrought iron, were far too soft to work igneous rock. Hard stone vessels were given their form by pounding them with hammer stones ( See Drawing 1 & 2 ) made of stone harder than the work piece itself.