How rich are we talking? Owns-three-islands-rich or just upper middle class? Because the latter’s wealth isn’t very visible, but they also don’t really have an issue with forming relationships with those less well-off.

Then, for actually rich people who do not wish to associate with riffraff, there’s plenty of signs:

• Where did you meet them? There’s plenty of settings that are almost exclusively full of rich people, such as yacht clubs or expensive hotels.
• What are they wearing? Things like brand-name clothes or expensive jewelry are some notable signs.
• What is their home like? Some shitty apartment or a mansion with a manicured lawn and a swimming pool? Things like size, location, the condition of the home, their furniture, items, electronics, etc., tell a lot about the person’s wealth.

None of these is 100% waterproof, of course. They could be in that expensive place with a rich friend. They could be wearing Gucci because they got lucky at a thrift store. But when you have multiple of these combined, it’s pretty safe to assume the person is rich.