First, I'd like you guys to take a look at this: https://www.youtube.com/watch?v=8nrVlICgiYM

That project made me wonder, why not use the same concept to protect gold in its various forms (bars, jewelry, etc.), of course, this should be adopted by governments to succeed.

The core idea is that every piece of gold would carry a digital signature, much like the certificate you get when buying gold. Those signatures are tracked as crytpo assets on the blockchain along with other meta info that describe the item, so when you want to buy gold you know exactly what you're buying.
Also, if your gold is stolen, they can't sell it since they don't have the crypto keys to transfer the owner of this item, with the help of government regulations it'll be much easier to find stolen gold.

What do you guys think? other than that I'll need to write proper document explaining the idea along with steps of implementation and technical documents, how would I start with it?
I believe in the potential of this idea, it's just a problem of how to get it started, since it won't work unless governments support it :/