A very long time ago I made a huge crystal of Uranylnitrate Hexahydrate in the nuclear lab I work at (Pic. 1 on the left). Now I was finally bored enough to try growing Thoriumnitrate crystals from some Thoriumdioxide waste I had laying around. Boiled in 1M nitric Acid until not only completely dissolved but also less volume. Left standing over the weekend I ended up with these beautys (Pic. 3) picked the nicest one and cleaned the slime off with a tissue. You can clearly see the Square-Bipyramidal Shape with flatten top (idk the correct english term) they are not perfect on both sides as they layed on one. Not planning on improving them but maybe the Uranylnitrate crystal. Hope you like seeing radioactive crystals