It’s just about placement. Right now I am in my all gold earrings with silver necklace / bracelet / rings and one bronze ring era. I think when you mix metals intentionally it WORKS.
by no means is this revolutionary but my ocd (or chronic black and white thinking) used to prevent me from doing this and now i am an avid metal mixer. i adore a gold pendant on a silver chain and vice versa and a silver & gold stack on each ear.
Gazpacho only in the late summer, persimmons only in the winter, etc. just because we can import anything from anywhere anytime doesn’t mean we should. Nothing is special if you can have it whenever you want it.