It is speculated the valuables, which included two watches, were probably stolen from the case before it was put in the cargo hold for the flight.
He says, "They were gifts. It's a horrible thing to happen."
The theft is the latest in a series of troubles for the Osbourne family.
Their hit reality show The Osbournes has featured Jack and his sister KELLY dealing with substance abuse rehabilitation, his mother SHARON battling cancer and Ozzy recovering after a near-fatal quad bike crash.
Three months ago intruders broke into the family's English country estate and stole jewellery worth nearly $2 million (GBP1 million) - including Sharon's wedding ring.
Former Black Sabbath frontman Ozzy, 55, wrestled with one of the thieves during the raid but the man escaped.24/02/2005 04:07