The glass is purple. Not irradiated. From what I was told.That's a nice one! I was always told that they stopped using manganese in the glass around the first world war, so I'm guessing this one dates to the first half of the 1910s since it doesn't look much older than that.
so they did not make these in amethyst at all? This was what I was told. That is why i am asking.According to the "Fruit Jar Works" made between 1910 and 1913 by the Elk Flint Bottle Co. of Shingle House PA. and has a Red Book # of 1391 valued between 10-12 . That one must have set in someones sunny window for a long time to turn that color, glass was originally clear.