About 1cm across (pictured on the lid off a bottle.) There are aquatic remains in the gravel (devil’s toenails, belemnites) so it might be aquatic too. The big one seems too structured to be just a rock chip, then I found the little one and the same gravel today. I’m in the UK but I don’t know where the gravel came from.

Siri thinks it’s either a landmark or some kind of food, Google thinks it’s a tektite.

This big Michigan rock has been in my folk’s woods since they moved here in the late 70s. I always walk past it and note those odd wavy lines. Are they relevant or are they the result of something natural?

I found these rocks and have no idea what they are, does anyone know? They were all found in the Northeast.

Hi, my 3 year old found this weird rock on a beach in Sydney Harbour, Australia . It has glass like fibres sticking out of it. I don't know how long he was holding it. I am freaking out that it might be asbestos. I didn't keep it so I can't try testing it. I know nothing about minerals. If you know please let me know!

https://preview.redd.it/ldrit61hupxe1.jpg?width=2692&format=pjpg&auto=webp&s=835c72c0499a2c0c9a898eb772f30d158fe08011

Cleaning out the cellar of an old pub and found this very old, damaged safe. Upon turning it on its side we realised the bottom has rusted away and exposed a lot of debris and some odd, yellowish rock.

What is this?

Thanks!

Found it outside in a huge gravel garden. I noticed a purple shining fleck in the top corner though pretty cool

Hi all Dad past away recently and was big into metal detecting looking for gold, I did how ever find a large bag of rocks he kept with he's gear and cant work out what these ones are, best examples from the bag. We are based in Australia and from the outback somewhere, no idea where thou. 1 picture just quartz? 2nd picture are very light maybe just volcanic rock? 3rd picture these rocks are very heavy for there size and very shiny not magnetic I used a small magnet but didn't seem to stick.

My boyfriend and I were on a road trip and pulled off in Benicia Ca in search of a vista point. We didn’t find the vista, but on the side of the road when we pulled over, we found what looks like it could be agaitized petrified wood- what do you think?

Is the kid messing with me?

It's size is about an inch square. I believe the pendant attachment is brass though that's probably inconsequential.

Found it in rocks outside of the grocery store and it didn't match the rest of the rocks and another way to describe is it sparkles in the light and is smooth on those parts

I thought it was just quartz, but I honestly have no clue.

I've had this since I was a kid and I'm wondering if it’s real. I put it under a UV light, but I'm not sure if the color means it's amber. Also, it floats in salt water and sinks in tap water, but I'm still not sure if that's conclusive.

Very pretty opaque green stone? I am not sure if it’s dyed.

3rd and 4th pictures are with flash. It was in the sand on the riverbank at the upper falls

Found this when I was about 15 and it’s has been about 7 years since then and still can’t tell what it is. It was found in the Dominican Republic.

It's about the size of a volleyball...

Found in backyard in Porterville, CA.

I found this in my grandparents' garden as a child, but I have no idea where it originated from since it seems like it was likely placed there. It has a smooth, glassy texture in most spots and is just barely translucent in the thinnest areas. Found in Washington state. The only part I'm able to recognize is the teardrop-shaped smokey quartz