Colloquially known as the "Black Card," this prestigious credit card is only available to big spenders by direct Amex invitation. If you're curious about this mythical card wielded by A-list ...

The Amex Black Card helped launch the metal card ... and Prime Visa now that are made of metal. But a true black card is invitation-only and was designed for only the most top-tier spenders.

You have to receive a private invitation from American Express. So, how do you get an invite for a black card? While the requirements aren't officially published, rumor has it that you have to be ...