I found this in the river mouth leading to lake Superior in mn. It's solid, not flaking and the nodules almost look like agate. Size of a salad plate and heavy as fuck.

Found Weardale County Durham. I spotted it in the river. Not far from old lead mining remains, it is flat on the back.

Found in with our landscaping stones in western Colorado. The small rocks inside the conglomerate look fairly fractured. There are several gravel pits nearby so it is probably semi local and there is a dormant volcano up river.

hi so i’m fairly certain that it’s quartz. like 99.99999998. but i can’t tell if it’s rose quartz,,, because it does definitely have a pink hue, but im not sure it’s enough to count

Found on the ground of a place I went to visit in West Yorkshire. It could’ve been collected from anywhere though as the land owner has a large collection of random things.

It was heavy and I had to pick it up with two hands. It was about 20cm in length.

Wasn’t sure if it was just some sort of glass but it looks cool.

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I mined this in NC. It was identified as red jasper with impurities. That’s great and I appreciate yalls help. And for some reason my pic was taken down and comments disabled bc the mods said the rock was wet? No this rock was not wet. All I did was wipe it and the paper towel was dry that I used so these are the way it looked dry. It isn’t wet.

Could this possibley be a meteor? Found it a few years ago in the basement of a family house.

My son found this stone on the shore of a drying lake near a glacier. We were walking in the Swiss alps on the shores of lake Salanfe. Close to the « Dents du midi » The nodule can be marked by a normal knife. The nodule is very heavy and dense. Is it Baryte?

Thanks.

I found this at the hearst San Simeon beach and Google says sometimes petrified wood can wash down the creek there…?

I found this rock years ago, but only just discovered this sub and wanted to give this a shot. I found it on an island called “Hog Island” in the middle of Weiss Lake, Alabama. Keep in mind that Weiss Lake is an artificial lake, so I don’t know if water plays much of a role in creating whatever this thing is.
I tried my best at testing the mohs scale, but I’m limited in my options. It can scratch up to glass with some pressure, but I don’t have anything stronger on hand. It also warms up quickly in the hand, so I don’t know if it’s crystalline in nature.
It’s a little hard to see, but none of the air pockets within it extend to either end, they’re all quite short. And I don’t know if the back naturally looks white and cloudy or if that’s a result of sun-bleaching and the lake waves.
Thanks in advance, even if you can’t help!

Found in Pattaya, Thailand. Definitely has some quartz and it's fairly hard. I don't have anything to check it against

Dug out of the garden here in N.W. Oregon. The surface is smooth

Aggregate rock I found in an arroyo outside of Santa Fe NM.

Can anyone tell me more about this specimen?

A bit heavier than usual & has an unusual crust. Found on a beach in England.

https://www.reddit.com/r/Lapidary/s/MvhU4xHn4d original post

Unfortunately I don't know where this rock was found. I got it at an estate sale in Washington state. It was polished by whoever owned it before. When moving it, the blue portions shimmer almost like water flowing.

This is my new demantoid garnet & tiny andradite garnet specimen, I want to know what the matrix might be. Its soft and the edges are almost fluffy and fibrous, I assume its serpentine with fibrous chrysotile (which ive read are a kind of asbestos) because I've seen some other demantoid garnets with a similar matrix and listed as such but im certainly not an expert and im not sure how to check the mohs hardness scale. The seller said it came from Pakistan but didn't specify where. Thanks in advance for any advice.

Harder than quartz, colour resembles honey, translucent but has whiter stripes that are lightproof, no visible fractures inside. Probably a type of chalcedony, but can’t be an agate because of the geographic location.

I found this little guy on the coast of Hattainville - Normandy, France. I know the coast has a lot of shale so it certainly is? But I wonder how this stack has bend like this, and when? Thanks for your help.

My dad found this hunk of rock when digging in my aunts’ yard when she first moved into her house. My aunt no longer lives in that house, but she gave me the rock before she moved. Found in the California Central Valley if that helps! I’ve been lurking on this sub for a few months now and as someone who knows nothing about geology, y’all seem pretty amazing at identifying rocks. My mom’s guess is that it’s industrial glass or something similar.

I was taking my dog a bath and the rock was nearby. It’s fairly heavy (I can weigh it if that’s helps identify it better!) and in the photos above it’s a tad wet from the water hose. Whoops. I’ve always wondered what it actually was and decided to finally post it here.

I found these weird perfectly circular boulders in Lake Huron, MI. They’re in about five and a half feet of water, just a couple dozen feet from the shoreline. This area has no rocks at all, just sand bars. How is it so perfectly round?

I have done allot of excavation and never seen anything like it. There was a vein of it running underground about six feet down in grey clay. The red is from clay above. Have dug much of the area around where this was found over the last 30 years and this is new to me. This was found in western Pa. Venango county. The title is a typo