John Fish has been a quality name in the jewelry business here in Las Vegas for the past 51 years. John R. Fish started the jewelry business in 1955 along with his wife, Elaine Fish, and his three sons John D., Howard, and Stephen Fish. They entered the jewelry business between 1976 and 1987 to work for the jewelry store.        John Fish started the Jewelry School March 31, 2003, with the idea of helping those who are interested in learning more about the jewelry business. John Fish wants to pass on his expertise and the knowledge to those starting a new career.        The instructor, Eddie Mazzola, has successfully taught all phases of jewelry manufacturing and repair. Mr. Mazzola brings 42 years of experience to the school.        The John Fish Jewelry School is approved by the Nevada Commission on Postsecondary Education.