Cast iron are another type of pink tea kettle these are a lot heavier and thicker unfortunately rust can eventually damage the kettle, if it was possible to stop this then they could probably be one of the most durable too. Although when boiling water in this type of kettle overtime, a protective layer of minerals build up on the base. It is thanks to this that they tend not to rust as quick. There are many farm houses who have in use painted enamel cast iron kettles, these have to be treated with special car to prevent chipping. It is some of these types of kettles that have become a collector’s item. There are many kettles to choose from but probably today the electric kettle is used by most people for the quickness of it.