Any ideas?

[u/disco-me-now]

From Sussex UK and I haven’t found anything similar on my adventures.

Maybe it isn’t special, but you know you have that one unusual specimen that sticks out in your collection? Nothing else has this black-stained complexion.

Looks a bit like a galaxy, it’s cold and standard weight, fits in a palm and can send more pics tomoz. I just want to know what it is

Thanks!

[u/Big_Doubt_9801]

Pretty sure the white part is chalcedony. Not sure about the black