That is one reason; another is that gold is relatively scarce.
(If it were plentiful, its economic value would be lower.)
A companion metal is silver, which is also considered to be a "precious metal," as gold is.
However, silver reacts more; but it has even better electrical conductivity.
Attention market theorists: Has silver made a bottom recently? The price of gold per ounce had historically been approximately 17 times the price of silver per ounce, but lately it has been much higher than that. (In the neighborhood of 50x instead of 17x.)
Anybody have insights on this? (Are ticker symbols 'AG' and 'SVM' going to rise in coming weeks?) (Are all the crystal balls cloudy today?)