Marble King?

[Melissa]

3/4 inch

[Linda Gail]

That's a purty mib! I'm not sure if it's a marble king. Very purty though! 

[CharlieT]

I'd guess MK..... cuz idk what else. Very pretty.

[Steph]

Following.

Not familiar enough with the blended MKs.  Is this something you've seen before at the 3/4" size?

[akroorka]

7 hours ago, Melissa said:

3/4 inch

 

I think that you may have an Akro patch here—nice one.
The seams tell the tale for me. 
Generally, with MK marbles the seam shows a bit of white due to the “brushed” type of marble that they made. The inside is white and the outside carries the colors—cheaper to make for sure—just not as deep as an Akro Agate that is from the older times.
It may be an “Older” MK—but my opinion is what I have to offer here.
Nice marble! 
Great images!
Marble—On!!
 

[Chad G.]

No MK IMO

[William]

I'm thinking it might be Akro as well, it's a beauty Melissa...

Be Cool👍😎

[Melissa]

Interesting. This isn’t mine. Listed for sale on eBay and thought it looked mk. Thanks everyone.