Sergio Lub A resident of the Bay Area of California, Sergio is inspired by history, his travels, ethnographic jewelry and his ancestry in Russia and South America. He has been making bracelets for a long time and they are all lovely and wearable. If you have issues with wearing copper or brass you may get a green wrist, or you can coat the inner side with clear fingernail polish. The bracelets come coated with lacquer, which keeps them shiny for a long time. They can be cleaned with any jewelry polish, or even toothpaste!