If you want to wear a necklace or - anything - you should just do it.
I know it’s hard to believe when you are still young, but when you are wearing somersetting YOU like, it will make you happy. And a happy person is attractive.
It’s just a plus that any chosen accessory will attract people who have the same taste :)
I think once I saw a web browser that made websites look like its code. So you were looking for bugs while browsing.