Help for identifying stony peanut!

It must really be tiny.

Nell I wonder if it's volcanic glass

But don't try to chip it...

It almost looks man made. Could it be a man made glass or ceramic product which has tumbled around in the ocean for a long time?

looks like a concretion or else a volcanic "bomb" or ejecta.
The Triassic beds of the Cape Blomedin area have ejecta beds that have produced some similar "nuggies".
Its good that you took a picture with a detqiled scale with it. Thats an important piece of info and helps.
If you hold this up to a really bright light , can you see some light through it?

If you can, is it greenish?

Thanks for the replies! I 'm also wondering whether it's handmade but i don't have a clue what for. Thought about finding a way to cut it, but it looks so nice and actually i don't want to destroy it. It's not transparent at all and too heavy for having a volcanic origin. Beaches around here are full of round stones, so it might be tossed and sanded during years but it wouldn't explain the perfect notch which is still there..

SO it is probably a concretion.if its a concretion of something like "bog ore" or even iron manganese (often found down at Lqke Charlotte) it would be heavier than a piece of shale .

Man, gotta give ya credit. After a lifetime as a rockhound I'd hardly learned a thing, liked the rocks 'cause they're pretty

Nell very much doubt it

Yes, no, Nell, don 't

Wonder if you've tried a magnet

Nature is full of such