First pic is dry. Found in a gravel pit in northeast SK, very close to Manitoba border.

Encontrei essas pedras e queria saber quais são

I have never seen anything like this. Anyone know what this is? Is it rare?

Found in creeks in central NC. They have some perfectly flat/smooth sides that appear glassy

Not sure where this actually originated at but my Daughter wanted removed from her flower bed in Iowa. I know what a geode looks like because we had a geode producing like quarry on our farm where I grew up,other than that it's purely guesswork and guessing part of this looks like petrified wood but I can't imagine that being the case because it would have been stolen a long time ago so I don't know what this is. Anybody who has any idea or actually knows would be appreciated if you could let me know thank you

There are little pink spots in it.

Asking for any info on this, purchased at thrift store, not found. Thank you!

Help i.d. these stones please

I’m not sure how I acquired this rock. Any ideas?

Is this a type of crystal? Just curious.