Is there an acid or some other solution that will remove beerstone from glass?
Have you tried a solution of Barkeeper’s Friend?
Five Star also makes a beer stone remover.
I use BKF as well. A little elbow grease gets it for me.
Lots of info in that article. Thanks
I just saw that the OP was posting about glass. Some of the recommendations at the more beer link may not appropriate for glass.
Acetic acid and citric acid seem to work fine as well with a little gentle scrubbing.