This might be the source of these photos - Vietnamese company Mavang is doing custom gold plating of Passports.
The square-screened business smartphone features a forged stainless steel plate for durability, but is also visible on the outside as a metal rim.
BlackBerry Passport with 24K gold plating
It's exactly that rim that is gold-plated with 24K gold in a process that takes between three and four hours, including time for disassembly.
The price varies between VND 8,000,000 and 10,000,00 ($375-$470) depending on customizations required by the customer - carving a message or a business logo.