ok what does jeweler do?

[Kinatt]

someone told me that in order to identify armor in HH1 you need jeweler and sense magic, well I got jeweler then someone said I don't need either of those I need Smithing skill, then someone told me I don't need smithing skill, just sense magic. Will someone please tell me what I need to ID weapons and armor dropped in HH1! and does jeweler ID jewels and make em like beauty or something