48.27% Pure Uranium. 
Reading can get as high as 50kcpm to 100,000 cpm on Radiacode 110 See other listings for different sizes. Rare and increasingly obsolete due to the laws protecting the site and banning artesianal uranium mining in the People's Republic of China.
Very UV Reactive!
Extras have changed as we do not have the laser engraver set up for wood tokens. Still includes RadioactiveRock sticker and a UV light.