Two words in the tax code sound almost identical and mean very different things.
Transfer. Unlimited, no deadline, nothing reported, no way to get it wrong.
Rollover. A 60 day clock, once per twelve months, and a way to accidentally turn your retirement account into a taxable event.
They both describe moving money from one IRA to another. The difference is whether it passes through your hands.
And if you are moving an IRA into a gold IRA, that distinction is the single most consequential thing you will decide, well ahead of which coins you buy.
So yes, you can transfer an IRA into a gold IRA. It is entirely legal, there is no limit on the amount, and done correctly it costs nothing in tax.
Here is how, and here is the one mistake that turns it expensive.