Mobell is a notable artist and jeweller from San Francisco. Born in Denver, Mobell eventually made his way to San Francisco and operated several jewelry stores in the city until his retirement 1995. He is known for his transformation of ordinary, everyday items such as food cans and cellular phones into bejeweled pieces of art. Several of his works are housed in the Smithsonian American Art Museum, including a $2,000,000 Monopoly set made of 23-carat gold, with rubies and sapphires atop the chimneys of the houses and hotels. It is the most expensive Monopoly set ever produced.