I got this pan separately from the 7-piece set because I didn’t want the 3.5 quart in the 12-piece set. The language in the description online and on the box led me to believe that it was compatible with all cooktops. 

However, due to the size of this pan, it warps when cooking even on medium heat. On a glass (or any flat surface) cooktop This means it will 1) rock back and forth 2) spin around 3) not receive direct heat because there is always a part of the pan that isn’t touching the heating zone because it’s lifted off.

On a gas stove I imagine that it would stay perfectly still on a grate above a flame. Also, the heat would come directly to the pan in the form of said flame so there would be even heating. 

A bit disappointing. I read a lot about this happening and took the chance.