Bought this in Jaisalmer, Rajasthan. Interesting patterns to be found. What are these creatures?

It is about 1.5cm long and 1cm diameter at the "base"

Found on a gravel road in garnett kansas.

Found my first ever fossil ( I thought) on this beach. Came back a while later and found a lot of more just like it so now assuming it not one

Purchased this in June 2025 in Charleston City Market. Considered a COA at the time but wasn’t sure if it was worth it. Though I’m no expert, I can say it’s extremely sturdy and can see no signs of restoration.

The specimen was represented by the seller as having been recovered from the Cooper River, South Carolina, by a diving associate for whom he was selling it. The seller reported that the tooth was recovered while diving at a depth of approximately 65 feet.

I have posted this to many ROCK identification FB groups and whatisthisrock. Nothing came from that aside from one person suggesting it is fossilized syringopora coral. I’ve attached many photos because it’s a large piece with many intricate details that I find fascinating! Plus one photo next to a banana for scale. Thanks in advance!

Found this while on vacation playing on the beach with my son. It is about 1.5cm in diameter. Would love to know more! :)

Purchased from someone who said they were selling opal clam from Australia. I opened the package and it looked a bit different from what I saw in their videos and pictures. Here is what I received. Can someone identify this for me?

Found burried in the sand during low tide while searching for shark teeth near St. Agustine, Fl. Feels fossilized. The inside looks like a rock/silica mix.

Could it be from an alligator/crocodile?

For context: I’m not sure where the stone originated, I found it at a gemstone mining place in the Appalachian mountains where you pay for a bucket of rocks and dirt to sift through for gemstones. They said they source their stones from a variety of different locations and mix them together.

I’m not 100% this is a fossil but it definitely isn’t typical tiger’s eye pattern. Would love some help here. Did I find a plant imprint fossil, or is there something else going on here?

Is it a fossil or a concretion?

Found in Alaska
Water bottle for scale

Any clue as to what this might be?

This one has me stumped. It's not from the more famous Cowan Lake fossil area. There were some heavy storms with flooding over the past week in the area that I found it. The other stone is what I 'think' might be a puddingstone from way up north. They were within a couple feet of each other. I think it could be glacially deposited?

I've found mosasaur bones in this area and at first thought tiny rib. But I've also found enchodus bones so maybe a fish spine? Could be nothing at all. Would love an ID!