Please check all photos for additional details. There is marking on the outer surface from use on a gas burner. The non stick surface functions as it should. Very heavy duty, well built pan. The All-Clad Stainless Steel 12" Ribbed Non-Stick Surface Frypan is a high-quality kitchen essential suitable for use on induction, electric, and gas stoves. This single-piece set includes a round frying pan with a silver color and a 12-inch diameter, making it perfect for cooking a variety of dishes. The non-stick surface coating ensures easy food release and clean-up, while the sturdy stainless steel material guarantees durability. With its reputable All-Clad brand and reliable features, this frypan is a must-have for any home chef looking for a versatile and efficient cooking tool.