Three people wearing ski masks busted into Villa Jewelers on Fourth Street. The burglars smashed display cases in the store, took several items and escaped.
RELATED VIDEO: Robber disarms Houston officer and holds her at gunpoint
Police say a witness saw a total of four suspects driving away in a gold Mercedes.
Police are still searching for them.
Investigators say this crime is similar to break-ins at other Bay Area jewelry stores.
San Rafael police are now advising stores to remove valuables from the display cabinets when closing at night.