Radium emits gamma rays, but the danger level depends on the intensity of the radiation and the amount of radium present, which is influenced by its half-life of 1600 years. Gamma radiation is harmful regardless of energy level, and its penetrative ability varies with energy, making high-Z materials like depleted uranium or lead effective at attenuation. The primary risk from alpha decay occurs when radium is ingested, as alpha particles are harmless externally. To assess the gamma emission, one must calculate the number of atoms in the radium sample and consider the decay paths and potential gamma emissions from daughter products. Understanding these factors is crucial for evaluating the safety of using radium in any application.