The primary type of radiation emitted by Uranium and Thorium is in the form of alpha particles which are extremely potent but easily shielded. Placing a specimen beneath a glass or plastic dome will block more than 99% of the radiation. Even a sheet of paper will block it, or the outer (dead) layers of your skin. Oak Ridge Associated Universities (ORAU) provides innovative scientific and technical solutions to advance national priorities in science, education, security and health. Wanderful old depression glass juicer. It is uranium glass and glows well under BLB light. There are some nibbles round the inner rim edge - which is quite a sharp edge. Uranium was used in the glazes on Cloisonné jewelry to make orange, yellow and green colors. Some Fiestaware produced before 1973 used depleted uranium to create the color of the glaze. Learn more about Depleted Uranium. Glass. For hundreds of years, glassmakers used small amounts of uranium to create yellow or green glass.