dull blue/orange marble

[Ponjong]

curious about this one I have, it seems like it could be older than my other marbles. surface feels more organic, not as polished. I think both seams are in the first picture, however it almost looks as though there is a straight seam in the sixth photo, which connects to one of the smaller ones. I could be wrong. The marble is about 16mm. thoughts?

[Ponjong]

dull/discolored alley bacon? only just learned about those after posting

[Steph]

Swirls aren't generally thought of as having seams.  All swirls technically have two cutlines, but often the cutlines are hidden inside the swirl, so it's not a thing that's considered often for that type of marble. 

I'd say good chance Alley.

Also, what does it look like backlit?

[Ponjong]

Ohhh, I see. still learning lol.

backlit, all of the blue is opaque, however the dark orange bits retreat into the interior. as a result, I can shine the light through one orange section and have it glow on the other side of the marble. so it has a translucent interior. I would take photos, but I don't have two phones handy at the moment.

the darker the orange, the more it glows when backlit.

[boris64]

Alley bacon maybe

[cheese]

St. Mary's Alley. 

[Ponjong]

that settles it then I guess, thanks for your inputs!