I heard that anyone caught leaving the country with more than five ounces of gold will be fined $10,000, serve a year in prison and have h8is/her gold confiscated.
I don’t think that has to do with the fact that it’s gold. That has to do with an attempt by the government to stop money laundering. You have to declare amounts above 10k which 5 ounces of gold would probably exceed or close enough.
I’m not sure what they would do about jewelry though. In the middle east gold jewelry is sold by weight/quality. I’m not sure what they would do if you had a few feet of gold chain. Dumb they ain’t.