Berkeley residents looking for a lavish gift or adornments for an evening on the town can stop by Yvonne's Enterprise on Sacramento Street. Five years ago, the local jeweler, which specializes in diamonds and other fine jewels, moved from another south Berkeley location, which it had inhabited for 30 years. In its new location, Yvonne's Enterprise took on a new name, but continues to carry the high quality of jewelry its clientele has come to expect.