'Money was not used in Egypt until the Ptolemaic period, so gold was not used in coins. One of the reasons it was so highly prized was that it was associated with the dazzling light of the sun and the solar deity Ra. It was believed that the very skin of the gods was golden and that their bones were composed of silver. Because it is a precious metal that does not tarnish and is fairly indestructible it was also associated with eternal life. The pharaoh was viewed as divine, the human link between the earth and the numinous, so gold was used for royal coffins and funerary equipment to help preserve the king’s mortal remains for eternity.'
https://atensequence.blogspot.com/2013/08/the-importance-of-gold-to-ancient.html