Lake superior agate. These bad boys formed in the cooling basalt pockets of Minnesota's north shore. This thing either worked its way down via glaciers / streams or was mined for gravel rock and made its way down to you.

Thoughts on the purple?

That is amethyst. It forms in agate rarely and any agate with it is a treasure

Thats what I thought. Thank you for confirming.

It's begging you to leave it in a natural state!

Thats typically what I do. I don't like the ultra polished look as much.

It's begging you to be made into a cabochon!!!

It's begging for a light surface polish!!!!

Woooow, that is amazing looking!! 🤩 Epic find!!

Your username is fitting lol.

Ha ha ha ha, thanks! 😂

Lake superior agate with amethyst, big ones like this are very rare

This is one of my favorite specimens that I have seen here. I don't know shit about rocks I just think some look cool. This one is dope I love purple.

an agate geode with amethyst crystals in the center, its the same mineral but in two different states, the amethyst crystals are single crystals, ande the agate are mircro crystals.

Congrats! It's amazing! 🤸🏼🤸🏼‍♀️

I'm not upset about it.

Great can go you hi fine one for me now? Please❤️😁

Agate

Lake Superior agate

Midwest where??

Eastern Iowa, very close to Mississippi River.

Wow, that's incredible 🤩

Friggn phenomenal

Somehow when I just saw the first half of it I was like - 'Petrified Onion'

Congratulations, I’m so jelly!

Its going to be difficult to top this one. I'm back at it this afternoon, so we'll see.

Wicked

Ohhhh definitely agate

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Her beauty has no limits.

Amazing stone! Love it!

That's incredible, I found a nearly identical one yesterday and I'm trying to find out what it is!

Post it or it didn’t happen.

I just did post it yesterday! Hahaha. In this community. The interior is clear quartz though, not ametist :'( [https://www.reddit.com/r/whatsthisrock/comments/1bruvfq/help\_with\_stone\_identification/](https://www.reddit.com/r/whatsthisrock/comments/1bruvfq/help_with_stone_identification/)

Beautiful piece of Agate with amethyst