Doc said they "yes I said they" he hopes will pass, so giving it two weeks, if not by then "or too much pain or swelling" surgery to have them roved. I had lithotripsy two years ago & almost bled out so no more of that unfortunately !! Some of my answers might be questionable for a bit, no pain meds because my digestive system won't tolerate them, a "rock & a hard spot" situation.
No CAC , no slag, slags only have 2 colors, the transparent base glass i.e. ( Clear, Red, Green, Yellow, etc) and the opaque swirl, usually white. The base glass in a slag will always be transparent.
I took a couple shots of them nesting on top of the pilings while we were out Sturgeon fishing the Estuary of the Columbia River.
One of the nearby Commercial Sturgeon fishing boats out that day