"Safes are the jeweler's last bastion of defense against burglary and theft," says security expert David Sexton, vice president of special accounts for Jewelers Mutual Insurance. "That's why we and other insurers look so critically at the physical protection they provide." How safe is your high-security safe? Does it use burglary-resistant composite materials and intricate locking and relocking devices? Can it meet the weight limits of high-rise installations and today's elevators? Does it use digital locks to prevent unauthorized entry? Most important, has it been certified to resist physical attack for a specific period of time? UL label. Simply put, a burglary-resistant safe is a container designed to protect valuables from break-in. It does this with steel, intricate locks (both mechanical and digital), relocking devices, and composite "buffer" or "barrier" materials (such as met