King Charles tells Britain to weather the cost of living crisis whilst wearing a hat worth 5 billion pounds.
(thespectaclemag.substack.com)
The crown jewels are state-owned and might as well be part of the UK's gold reserves worth 30 billion. Given the historical, cultural, and symbolic value, I'd say they should dip into the gold reserves first to solve homelessness and fund the NHS.
You can certainly have a debate about where some of those rocks came from and their ongoing possession by the UK tho!