Abstract: A device for detecting loose stones in a jewelry setting includes a pedestal against which a ring or other jewelry item is lightly held, and a vibrator for causing vibration of the pedestal and hence of the jewelry item held against it. A large magnifying lens is positioned a few inches above the pedestal so that the owner of the jewelry item may observe the stones when the setting is vibrated. This enables a jeweler's customer to see loose stones themselves without relying upon the opinion of the jeweler. The vibrator is a motor contained within a housing, and the pedestal extends upwardly through an aperture formed in a top wall of the housing. A linkage means interconnects the output shaft of the motor and the pedestal in such a way as to cause vibration of the pedestal. A light mounted above the pedestal illuminates it, and separate switch actuators are provided for the actuation of the motor and the light.