ID Help Needed

[Leigh]

Would anyone be able to identify these two marbles for me? Thanks in advance! 

[akroorka]

Great images Leigh.
The one on the left is a Peltier Rainbo.
The one one the right got me a bit excited but after working on it a bit the reddish tint is from your background, I thought that it may be oxblood—not. 
It is more than likely a “White” slag with pollution from the run/machinery included. It may be an Akro.

I am figuring that both are around 5/8". Size always matters.
Both are pretty cool marbles—no individual “collector” names from me though.
Marble—On!!
 

[Leigh]

4 minutes ago, akroorka said:

Great images Leigh.
The one on the left is a Peltier Rainbo.
The one one the right got me a bit excited but after working on it a bit the reddish tint is from your background, I thought that it may be oxblood—not. 
It is more than likely a “White” slag with pollution from the run/machinery included. It may be an Akro.

I am figuring that both are around 5/8". Size always matters.
Both are pretty cool marbles—no individual “collector” names from me though.
Marble—On!!
 

Thank you! The one on the left is actually quite nice, so glad to hear that it's a Pelt. And you are right about the reddish tint not being in the marble. I wasn't sure what the pollution was so that information is also helpful!

[Chad G.]

Agree, left is Pelt Rainbo, not sure about the one on the right ??

[ann]

I know why you got excited, akroorka! The one on the right is certainly a white slag - most that I have and have seen are pretty sparse on the white, like this one. The crucial question now is : is there an observable pontil, and if so what does it look like? is it rough, or has it been ground down? If it`s been ground, you should be able to see faint facets there.