Plain 1/2" (Half Inche) Tungsten Cube Density Cubes High Density Element Cube for Element Collections Lab Experiment Material Heavy Small Objects Experience(Tungsten,1/2 Inch) by Unique Metals

i was surprised how heavy it was for its size and how sharp the corners and edges wereso far nothing has scratched it and it has scratched almost everything it has touchedcame 2 days earlier than expected too10/10 would recommendupdate: had to buy another because i lost itdoesn't change my rating, that was my fault

It's Tungsten, it's dense, therefore it is heavy yet small. I lost it once because of the size, but luckily it showed back up in my laptop bag (where I put it). Keep track of it, as it is really small. Very cool product, and my kids loved how heavy it was. Good conversation starter.

Very sharp edges. Now I know why it is cheap.

Ok, let me preface this by saying I'm apparently a tungsten officionado... I have the 1cm, 0.5in, 1in, 1.5in, and 2in cubes, AND have two 1cm dice (and am currently on Amazon to buy more.......). They're great (and incredibly useful when you need a nice, heavy weight that won't get in the way - like, for sewing or woodworking).But this particular one... has sharp edges. It's not comfortable to hold in my hands because it feels sharp continuously.Don't get me wrong - I still use it to hold notebooks/planners open, but I can't keep it in my pocket because it'll cut a hole in them.I realize I sound like a lunatic writing this (ehehehe this heavy rock ehehehe is sharp ehehe) but I suspect, if you are here reading this, you will understand.