Libbey Heavy Base Rocks Cocktail Glasses, Set of 12

we are down to 2 glasses out of the dozen in a few months. I know they are made of "glass" but we have other sets, including wine glasses, that have survived years of clinking in the dishwasher and bumps in the sink. These glasses have a thin rim and almost every one that broke has the same shape piece come off. Many broke just going through a dishwasher cycle.

Lots of imperfections. Small divits in the glass and the base is not level. (Thicker on one side)

Vraiment fragileDécevant ..

Great quality. Good size for water or juice. Nice feel in the hand. Great value for the price

I bought these on 10/18/20. Within five weeks, 7 out of the 12 have broken for no apparent reason in the dishwasher. Five went in fine, but came out broken after a normal dishwashing cycle. Another two broke while I washed them by hand in the sink with a regular sponge. I have used Libbey brand glassware forever and never had a problem. Something is wrong with the strength of these particular glasses. To be fair, I have contacted a very responsive Libbey customer service agent, and they are sending another dozen at no charge. That itself is worth a couple of stars, and I will update this review if the replacement glasses prove to be better.