This design was created for a men's hairdresser/barber and printed on DIN A5 (130g/m2, matt) using a standard process. The golden areas were created by black-yellow colour gradients and are therefore not really golden, but only a kind of optical illusion.
However, if you want an even more "golden" look, it is also possible to have the golden surfaces covered with shiny gold foil (this process is called "hot foil embossing") or to have gold printed as a special colour. Such special printing or finishing techniques result in golden surfaces not only looking "more golden", but they also give the product a special surface structure that can also be felt with the sense of touch.
I am happy to advise you in the selection of the numerous printing materials and finishing techniques available on the market today and to recommend good and inexpensive printers (unless you order the final product from me anyway).
Another example of a design with seemingly "golden" elements can be found here: Business card for barber
