Someone in Georgia contacted me for help IDing this article. Does not look familiar so I am giving you bunch a try at helping :)
He reports: Found in Georgia at an Estate Sale amongst many other antique/vintage items being sold. (Some other knob/tube insulators were at the house too, so that was my first guess, but I'm coming up short on finding a match
His description:
Amber glass with mold lines on each side. About a “honey amber” shade.Lots of bubbles.Length about 3.75”Width just over 1” at the widest pointEnds ground flat.
I don't recognize it. Looks decorative, the sort of colored glass bit that someone might save when something larger has reached the end of its life and is scrapped/disassembled, part of a lamp maybe.