Officials discovered some envelopes containing watches, rings, necklaces, earrings and coins at the home of a Selma jeweler who passed away last year.
The envelopes contain little information, so they are not sure who owns the items.
For years, George Garabedian operated a business called Geo's Jewelry on High Street in Selma. His shop closed in 2010 after the rood collapsed.
It is believed he continued to work as a jeweler at his home.
Anyone with information is asked to contact the Fresno County Sheriff's Office.