Tumbled Uranium Beach Glasspound of real uranium glass chunks. These are typically from our regular vintage items that have met with unfortunate accidents either transporting or displaying them ("Gravity, thou art a heartless bitch.") Rather than wait for Mother Nature to do the job of smoothing those sharp edges, we toss 'em in a rock tumbler for a week to get the same finish. The bags are all the same weight, and the size of the pieces is random. The level of glow will vary