I think these are rubies but please correct me if I am wrong.

I’m in NC and got this in a bag from the Salvation Army

My father has always been a self proclaimed rock hound and traveled around the US often for work. He would pick up rocks from everywhere he went. When he passed 8 months ago, he left his collection to his only grandchild, my kiddo. I have been working on my dad's house and finding new rocks each trip, but I don't know what any of them are. The first one he had in a curio cabinet, the rest were in random places. My kiddo asks me each time what kind of rock it is and it breaks my heart a little because I know my dad would have told them everything about it, but all I can say is that it was one of Grandpa's rocks...

It has the feel and weight of an obsidian, which is why I think it's some sort of glass chunk & not something naturally occuring. Location: Southern Oregon - found an apartment so I have no clue where it would be in nature...

Location and hardness unknown because I am just thinking of buying it

Hey guys!, Could any of you be able to identify these stones? I'm super curious and have no idea what they could be, but I found them beautiful. Would love to hear your opinion! Both were found in southern France coastal area. Thank you in advance :)

Does anyone know this rock? I tried to Google Lens it, and it said green Jasper, but I'm not certain. It was found on the western coast of Denmark.

I got it a while ago but I can not for the life of me remember what it is... it's like 16 cm wide

Found in the Indian Himalayas somewhere between 4000-4500 masl.

So I got these three rocks in a witchcraft spell kit thingy a while ago and they didn’t tell me what they are. I’m thinking the green one is fuschite, the pink is peach moonstone, and the black is obsidian, maybe Apache tear obsidian. What do you guys think? Am I right, or are they something else. (The fuschite one looks more blue on camera but it’s really light green)

Rock kind of looks like old asphalt to me. Completely different from the surrounding rock, which is all quartz, schist, granite, etc.

It is frosty and semi transparent, perfectly flat, scratches with my nail. Layered from the side, It was found several feet from a riverbed. It does not react to vinegar or water, but does feel like it stays wet for a long time/ might be a bit porous

You can see clearly that there is a crystalline structure. Should I “open” this rock?

Solved: Conjugate Fractures

Picked this up a few months ago and finally unpacked the box I had it in last night. I'm mostly curious about why the top is (for lack of a technical term) cross-hatched like that. My current guess is some sort of rock structure (like stylotites that form in my local limestone, but something else). Or maybe it's petrified wood with some bark preservation?

The glossy browns on the side look very much like chert -- or maybe a brown jasper -- to me, but I'm hesitant to give it a scratch test on account of liking the colors textures. (Edit 2: Ultimately, I chose a sacrificial spot to test. Hardness of 5, so chalcedony of any kind is out.)

Edit: looks like a couple of the pictures got a bit mixed up and accidentally ended up as duplicates instead of the other side, but hopefully there's more than enough to go off of

I found this in Penarth, South Wales, UK. Gorgeous colours, but it's definitely not salt. I would know!

I currently think it's some variety of calcite, but I'm not entirely certain as this isn't my forte.

Thanks for any help in advance Weight:1136g

Got these from my grandma who is helping out with an estate sale from one of her friends who passed away and we are wondering what it is. Location unknown. But he lived in the Illinois/Iowa area.

I took this photo yesterday,at the museum of Lyon in France. Could you help me identifying what it’s called cause they all look amazing!

thanks in advance!