Alan

Scott Patrick had a well-known period of creating fake marble tournament medals.

Take care not to temperature shock that piece.

Left and center probably Jody Fine - but I should note that I'm not well-experienced in his work and he has produced over a long number of years and there is a lot of diversity in his work. I can't hazard a guess on the right - but the control shown is from an experienced artist (like Fine). Some day I hope to own one of Jody Fine slices of Marble Pie. I've never seen one for sale.

100% Wasp

Not enough resolution, focus or closeness to the marble(s).

The photos are not focused enough, close enough or lit enough to judge.

A LOT of those were dug.

Simple MK BB DI.

Its an oddball, but I don't get Akro from it.

Its not a submarine. Thats the standard construction.

Jabo. Some people lack ethics.

Agree its not Akro, and I also get Japanese flavors from it.

The colors seem off. Maybe HDR or 'Vivid' setting on the camera is on.

It depends upon which corkscrews, and secondly their condition.

UV isn't a diagnostic.

Too blurred/out-of-focus to tell.

RBFs don't have characteristic annealing fractures.

Looks like torch work.

I could use a ticket to anywhere in the Caribbean.

Not a Cornhusk. The fractures are caused by glass incompatibility.

Its ballast. ETA: You realize that the "There are radioactive marbles in it and we can’t sell them right now.” is just sales BS - right?

Some kind of crud in the batch.

Why would you attempt to invent that term?

They're only original once. Why fool with them?

Not getting Ravenswood here.