Most stovetop tea kettles can be used successfully with gas or electric cooktops, however, induction cooktops require magnetic cookware to heat up. Due to their magnetic properties, stainless steel kettles are good options for induction cooktops. Cast iron has magnetic properties too, but it might scratch a glass cooktop surface. Glass electric cooktops work well with lighter materials like glass, stainless steel and aluminum. A gas cooktop’s heavy-duty grates can take on materials like cast iron, copper and ceramic.