Its a big Steel Patila, the bottom had copper coating, which has worn off but it doesn't affect functionality at all.. those who use copper coated utensil, wluld know that itncomes.off after a few wash, as our househelps use steel wool to clean them off... we used it for making rice for whole family... Now our consumption has reduced a bit, so don't need such big patila now... WEIGHT PROOF IS GIVEN. IT IS 470 GMS