What’s the intrinsic value of gold?
Discussion
Extreme corrosion resistance, great ductility, one of the best electrical conductors.
And in extremis, don't bother with silver bullets, gold has a specific gravity of 20, up there with uranium and tungsten as a penetrator.
If you know you're going to be robbed and can make a neutron source, you can irradiate your gold to give off horrific 2 MeV gamma rays for the "new owner". With a half life of two days, it will soon cool enough to safely reclaim from their corpse.
I need to use that property as a plot device in something.