"Patina doesn't flake on metal and is mainly just a color change ... while tarnish is a thin layer, often black or gray, that forms on many different metals, says Fulton. When iron or steel ...

Patina is a layer that forms on the surface of items made from wood, metal, and other natural materials, and is most commonly associated with antique and vintage items. It's not dirt, but rather a ...

Forbes contributors publish independent expert analyses and insights. I write about New York's art gallery system and museum structure. Sub-cultural movements, especially those spearheaded by ...