Stone or bone? This has me demented!

[Nikki037297]

So we set up a fish tank, we got a large amount of rock and placed it into the tank, one piece of rock quite caught my eye, it stuck out from the rest, it had so much detail and I decided this piece deserved to be right at the front, this was 2 years ago, over this time people who have came into my home and looked at my fish tank (marine) and Iv pointed out the rock with some different opinions with someone mentioning it looks like a bone! So I googled and it seams hard to tell, my 12year old is intrigued that we may have a dinosaur bone in our fish tank, or just a real fancy rock! What do people think?

Looks like a normal rock with small pieces of fossils embedded in it. Not a bone.

Looks like a decorative rock from a pet shop that's been made to look old.
We have one that's about 3x the size of yours. Was £21.

Not a fossil, sorry.

Stone

Rock.

I saw on a program once to tell the difference between the 2 just put your tongue on it - if it’s ‘fizzy’ it’s bone.

Yours will be fishy too

I would say that was coral.

Agree looks like coral.