The value of gold is hollowed out by the process scientists set in place to counter global warming (how? I don't know, something about gold from seawater--I'm no scientist. Uh, obviously). Demand for diamonds has remained artificially high by clever marketing and management of supply. But investor distrust guts it. Sow, where does the smart money go to hide? Electronic funds are all very well and good, but sometimes you just want something tangible.
From cowrie shells to gold. From gold to ...? Water.
If future wars will be fought over water, then it is the currency of the future.