This may be hard to imagine StevenJustSteven,
--but yours has a transparent base glass--the white is dominate for sure in yours--but the base glass was intended to be transparent dominant.
The unintended dominate white is what make this one so special.
Slags vs swirls is always a good argument—but the slag gurus here have yours penned right.
It is a slag—a very, very nice one—top shelf for sure.
Slags never cross over to being blended or to becoming swirls--they are just slags some are better than others.
Marble—On!!