Blue Rocks

[Ksturg]

Has anyone ever seen their rocks turn blue? In all my years I’ve never seen this..any thoughts?

 

[Peace River]

What does it look like under white lights? There is a type of blue coralline algae.

 

[BryanM]

Indeed, what kind of lighting is this, and if it isn't white (I suspect it is not), can you post a white light pic?

 

[Ksturg]

The phone shows it as a blue tint for light but it’s white light well as white as it’s gonna get…I don’t really want to mess with the settings. It has purple coralline algae on it but the blue is like a royal blue but it’s not encrusted like coralline.