Which jewelry metals sometimes leave marks on people's skin?

Which jewelry metals sometimes leave marks on people's skin?

John Cordova (Vice President of Human Resources, Robbins Bros.) gives expert video advice on: What are the metals most frequently used to make jewelry?; What is platinum?; Why is platinum so popular as a jewelry metal today? and more...

White gold is one of the jewellery metals that sometimes leaves marks on people's skin. Yellow gold at times also does, and the reason for that is the alloying process. It isn't the actual gold that causes the reaction, it is the metals that are used to create the alloy such as nickel. Those sometimes cause allergic reactions and can leave a mark on your skin.