i had a blast with this, but i know almost nothing about these rocks. any tips?

I found this rock with what appears to be a good spot to put a chisel. I've never cracked a rock open before...is this a good one to start with or will it probably be the same inside as out? Help from anyone who knows about cracking open rocks is appreciated. I really don't know what to look for in a good cracking rock. TIA

5 minutes at this creek and my pockets were stuffed, LoL, I'm like a rock klepto! Stopped just to check it out, and couldn't resist...

My fave piece of petrified wood found in a paddock in central Queensland. Not sure what caused the shear but you can see the rings in the wood.

So, for those following my post about cracking this rock open, I'm sorry for the delay. I lost my chisel and was having a tough time getting it to crack. Today I took a ball peen hammer to it today. Same inside as out but now I want to break everything open!

Found in Ohrid Lake Macedonia

Pics: back and front of the rock

Or raised fist? It’s definitely something…

So...what do you think it will look like inside? Same as outside...?

Found in nw Iowa gravel pit

These are my biggest finds ever from last month in arizona. Where shall I take them to get them certified

I don’t remember where I got this from but it’s petrified wood and it’s a very large and heavy sample. Not sure what to do with it as I’m starting to purge at age 66 to downsize my life. Anybody have an opinion as to its origin?

My apt is infront of the lake and this is the view I did that. It came out cool no .?

This thing is wild. My in laws have thousands of pounds of rough agate to get rid of. Some of it is sliced and polished. Not sure what the best way to help them get rid of it will be. Think I will try listing some on eBay? Probably keep this chunk for myself though 😬very unique. If anyone can suggest a better way to sell it’d be much appreciated. Also if you can give me anymore insight on this awesome rock

These are a part of my mom's inventory but I don't know where they came from. She said they're called "chicken blood stone."

Adding more/better pictures

West Melbourne

These rocks have all been found in my local gravel pits still got polishing to do on a couple but just thought I’d share !

Sorry the quality of the foto is not good I’m 6 hours forward I need to pass out 😂☺️

Does anyone know what this is

Let's play a game. What minerals can you identify in this rock? What is this kind of rock called? How were they formed?

If you get all 3 categories correct, you win: Bragging Rights beyond you wildest dreams!

If you get 2 out of 3, you win: Pretty Good Self-Esteem.

If you get 1 right, good on ya mate!

If you get none, please accept this: You can walk away knowing you are not a nerd!

Congratulations in advance to all our degenerate contestants!

I've been collecting rocks ever since I was 4 these r almost all of them (one bag is missing I'll update u guys when I find them). I was washing them today because they had been kinda dirty. Plus my sisters sea shells cause I thought I'd clean them up for her. These rocks r from many places all over Pakistan and I love each and every one of them like my children.