Ioun Stone & Earth Glide

[thompur]

Does an Ioun Stone continue to circle your head when you earth glide?

[frogglesmash]

The book specifically says that they float in the air, so from a strictly RAW perspective any medium that isn't air, including water, a vacuum, or ranch dressing, causes them to stop floating. However I consider this to be more of an "ask your DM" question.

[Bronk]

On the other hand, once activated, they need to be either netted or grasped to be separated from the user...

I think they go along with earthglide. They're an attended magic item, so they should be affected by the same ability the user is.