had made the cups ... all of which were made of pure gold

This can be stated in active form. AT: "had his workers make all the cups ... out of pure gold" (See: rc://en/ta/man/translate/figs-activepassive)

sockets of gold made for the doors

Here "sockets" may refer to either 1) the sockets in which the door pegs turned, or 2) the hinges on which the doors hung.