My father collected gems and I’m uncertain what they are.

My kid picked up a bag of rocks from a store in central Oregon. Are all these quartz? Or do we have something different here?

A friend left me her collection of crystal stones that have been drilled for jewelry making. Most I can make an educated guess at, but these 2 have me stumped.

I'd love any thoughts, thanks

Any idea if this is fake or real amber? Thanks.

Google said it's eclogite, but I doubt it. This stone is tiny, and so as the supposed garnet drops. But if it's not garnet, I'm not sure what it is. Bavaria, Germany

Found in the Poudre river in the Poudre canyon north of Fort Collins. Haven’t seen a rock like this before. Any ideas? Thanks in advance!

We were climbing some rocks along the beach, the big rock surface seemed to be granite (?) with some other kind of material running in straight lines across some parts. Some parts broke at this line, and you can more clearly see that it's a different type of rock. Really curious how this formed. What could be the type of rock at the "line"?

I could not scratch it with a knife, both the crystal and matryx are harder. The crystal becomes greenish under 365 nm uv light (last photo)

I don't think it's a rock but someone told me to post it over here

My wife has this rock shes had for years, has no idea what it is. Figured id try to help her find out. Its soft enough to scratch with a fingernail. Not sure where it was found.

Purchased this a while ago from a rock shop in Northern California that (I believe) sources most of their stone from all along the west coast. I cannot for the life of me remember what it is, if it even said in the first place (a lot of their stuff is left unlabelled).

First picture is dry, second is wet. A penny can barely leave scratch marks on its surface, and my nail leaves none.

Bought new house. Ppl were geologists before they died.

What r your thoughts on this rock and these rock scratches ..what do u see...👀.. 👀...??

Founds lots of rocks ,agates ,sunstones shells, bones boulders of rocks and crystals. But this rock seems reallllyyyy unique with those scratch markings if u see what I see Portland oregon Bought house 1 ago. This house was here with one family for 50 years

Please please please look CLOSELY at the lines on the rock....is that...a drawing? I see drawings Ll over the scratch marks

I visited centre parks this year and noticed the paving around all the pools. It's pretty nice to look at, but best of all it seems like it doesn't seem to wear in busy areas where it's well trodden. On the flip side of it being hard and resilient like granite it's soft to touch. It looks like sandstone with silica, mica and maybe iron in small areas? Can someone please tell me what it is. Or is it different stone? Please help to identify?

This is probably the neatest rock I've found. It's bigger than my fist.

Found this buried in my uncles storage unit and have no idea what it may be. It flashes red in the right light / angle

I've lugged this around for 40 years. A neighbor told me they brought it from Montana, the Dakotas, I can't recall specifically, but that part of the U.S.. It has a greenish cast, and weighs around 10 lbs. I always liked the look of it.

Thanks for any guidance!

Hey - Found this rock on a beach roughly a year or so ago, but need help identifying what it is, and whether it is actually a rock?

It is dark dark black inside, with silver metallic streaks throughout (as shown)
The outside is crusted and less black, more of a dark-grey as you can see - It's recently started to crumble for some reason

I'd also note that the dish it has been sat on has rusted, but ONLY where this particular stone is sat, why is that?

The beach it was found on is in East Sussex, UK

Any help is appreciated!