An Austrian police official says Bianca Jagger has lost a ring worth about $300,000 in Salzburg.

Karl-Heinz Wochermayr says the ex-wife of Rolling Stone Mick Jagger lost the ring Saturday in the city center.

The platinum ring is encrusted with small diamonds and has an aquamarine in the center with a diameter of about 0.6 inches. The model and actress-turned-activist designed it herself.

Wochermayr said Wednesday that the chances of finding the ring were slim because of recent street cleanings.

Jagger was in town for the prestigious annual Salzburg Festival. She has since returned to London.