Vienna Museum Had Security Plan in Place When $4M Diamond Necklace Was Stolen by Hammer

Two men smashed a glass case at Vienna's MAK museum with a hammer and fled with a 673-stone diamond necklace made for an Egyptian queen, valued at about $4 million. Director Lilli Hollein confirmed a security plan was developed with exhibition partner Van Cleef & Arpels. Staff followed procedures; no one was injured. The ease of the theft raises questions about physical security at museums housing irreplaceable assets.