Help me to identify strange stone!

[1bear]

I found this big stone on the seashore in Scotland. I would be very grateful if you could help me identify it. Thanks

 

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[wheelerite]

geode

 

[phishisgroovin]

wow, looks like the beginnings of a mortar & pestle for grinding corn to make tortillas lol!
That would be a find of a lifetime if it is and has that mineral deposit in the bowl.

 

[chris rizin]

Chalcedony geode..

 

[TrinityTiff89]

This is beautiful

 

[StoneWhisper]

Note: The Chalcedony a type of geode aka (Thunder egg) Can be solid or have small pockets of rounded crystals (nodules).
Common colors include: White, Cream, Grayish blue
Uncommon colors include: Red, Blue, Opal (these colors can be found west of the Mississippi river)

Great hunting.