Are there any rules regarding freemason jewellery/regalia?

This is specifically for the UGLE.

Is there any rules regarding what you jewellery you are allowed to wear? I've been looking to get a new signet ring for a while, and I'd love to get a masonry one. That said, I am not a MM and don't know if it will look like I'm being, for lack of a better phrase "all the gear and no idea". I just want something classy, nothing particularly outrageous and no special inscriptions or anything.

Also are we allowed to wear in public or is it just for the lodge?

Appreciate any responses and thoughts on this!