Vienna Museum Heist: 600‑Diamond Necklace Stolen in Broad Daylight

Sun Sep 06 2026 02:11:44 GMT+0000 (Coordinated Universal Time)

Two robbers broke into Vienna's MAK Museum, smashed a glass case, and stole a priceless 600‑diamond necklace—sparking a European museum security crisis.

A daring daylight raid saw two men smash a display case at the Vienna Museum of Applied Arts and secure a 600‑diamond necklace worth over $4 million. The prized piece, part of a Van Cleef & Arpels exhibition, was removed in a swift, violent incident involving a suspected firearm. Police released CCTV footage and called on the public for assistance in locating the perpetrators, who fled toward the city park. Authorities are responding to the wider wave of European museum thefts with dog units, forensic analysis and strengthened security protocols. The exhibition reopened following a thorough security review, but questions about museum safeguards continue to mount.

On Thursday afternoon, two men broke into the Vienna Museum of Applied Arts (MAK), smashing a glass display case that housed a priceless 600‑diamond necklace. The piece, which weighed more than 200 carats, was on loan for a Van Cleef & Arpels exhibition and was valued at over €3 million ($4 m).

The thieves, whose identities are being sought, were seen on CCTV breaking the case and carrying the necklace. Police released the footage to the public, urging anyone who recognizes the suspects to come forward. Witnesses report a voice threatening to shoot if anyone intervenes, and one suspect was believed to be armed.

MAK director Lilli Hollein said the museum had followed a rigorous security plan developed with Van Cleef & Arpels. “The theft has hit us hard,” she said, noting that staff acted calmly, used established emergency procedures, and that no one was injured.

The 600‑diamond necklace on a white background

The incident is part of a recent spate of high‑profile museum heists across Europe, including stolen artifacts in Spain, Greece and Italy. Europol warns that such thefts are increasingly violent and may involve organised criminal networks. In response, Vienna police deployed specialized dog units and are analysing forensic evidence from the crime scene.

The MAK exhibition reopened on Friday after a thorough security review. Authorities continue to press for information from the public to aid in the pursuit of the suspects, who reportedly fled toward the Vienna Stadtpark after securing the necklace.