Hi Amy,
Any cast iron exterior will work, but there is an additional possible problem for induction users. My Staub cast iron has a base that is too narrow to activate induction. My electric hobs are slow. So, I use a Le Creuset enameled steel tea kettle, and pour the boiling water into my Staub cast iron. I used to use a Revere tea kettle that also worked perfectly with induction.
Ray
