Language spoken is primarily English. Accept Cash. Pawn loan is a huge part of Gold Refinery of San Diego business, as well as buy, sell and trade, warranty. The most favorite things to buy and sell in Gold Refinery of San Diego are: all types of jewelry, including rings, earings, chains, bracelets and coin collections, top brand electronics, appliances, smartphones, receivers, players, top brand tools like Hilti, Makita, Bosch, work radios, new and vintage game systems, contrlloers and accessories, guitars, amplifiers, drums, mixers, sport equipment, memorabilia, bikes, RC toys, jerseys.