A representative sample of Radium in the form of 3 vintage luminous watch hands. Size, shape and color of the hands will vary at random based on what I currently have in stock. Please note that the hands no longer glow on their own, the ZnS has since burned out. Pure Radium metal is impossible to find but these watch hands make the perfect Ra sample for the element collector. They would also be great for a Geiger counter check source or be of interest to the vintage watch restorer. When taking readings, a thin window probe is required or you will not get accurate measurements. The hands must also be removed from the vial first. Please check my Bonanza store for more element samples. I have almost every collectible element available. Thanks for looking.