This question about wearing a religious necklace in the workplace is getting close votes as off-topic -- legal/company policy. I don't get it. We have bunches of dress-code questions (and a tag for them). We have questions about guys with long hair, guys with earrings, and dressing more (or less) formally than one's colleagues. These questions don't ask about company policies (which we can't answer) or the law; they ask about workplace norms and conventions. That's on-topic, demonstrably.
The present question, too, asks about the appropriateness of wearing a certain item. The OP isn't asking for a ruling but about how to navigate international clients (i.e. people who might not share the OP's cultural norms) and unfamiliar colleagues (interviews).
How is that off-topic?