The Robbins Brothers store at Torrance and Hawthorne boulevards was burglarized just after 5 a.m. Saturday. Someone smashed a side emergency exit door to get inside the business.
A display case was shattered and $5,000 worth of lower-end jewelry was taken.
Someone also broke in on Friday through a window and stole about $500 worth of cubic zirconia jewels.
If you have information that can help investigators, you're urged to call Torrance police at (310) 618-5641.