Not glass, but hardened resin. Used to track littoral currents and drift. Has metal so it can be found later with a metal detector.
this post was submitted on 04 Feb 2025
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What is this thing?
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A tracer pebble, interesting. But they seem to be rather made of the same pebble they are supposed to trace. https://southerncoastalgroup-scopac.org.uk/tracer-pebble-studies/
A highly secured USD $2.75
"Break glass in case of emergency."
An ancient baby spring preserved in amber
A water cooled amber. For obvious reasons.
~~What is the scale of this thing?~~
edit: had to find out what it was, so I will not make guesses. See someone else has discussed scale already.
Wild guess: Not glass at all, but actually a bar of glycerin soap with... something embedded inside it.
I like this answer, you can see it’s on a formica counter with the edge of a self rimming sink to the left.
Jeez I can't last longer than 10 minutes.
Either I'm spamming or "providing content"
Last one for a while.
10 minutes!! I did it!
Can you give us a banana for scale?
Lookd like its next to a sink, methinks soap
I wonder if it's a kind of stir-bar, put it in a container and oscillate a magnetic field outside to move the contents around.
What is the size? Looks like a can inside, if it’s large. If it’s small it looks like a threaded rod, or grub screw or something like that.
A scifi movie prop for a prehistoric alien artifact conserved in amber.
It's a glass egg
...thing
A battery holder?
hand warmer
Butt plug
Definitely more of a suppository than a plug