Copper 1" Metal Density Cube - 99.9% Pure Element for Chemistry - Periodic Table Design Educational Scientific Elemental Specimen

Incredibly dense. We all know that. It's about the side of a golf ball, but imagine it weighing 2.2lbs. It's hard to convey how it feels, but it is cool. Careful, though, the corners and edges are sharp.

I love it very good quality metal I like this cube thingy very nice perfect price thickness very well.

Bought this for my dad (he's an engineer) and he absolutely loved it. Very heavy, clearly genuine tungsten. Would purchase again if the need arose.

I love this cube. It’s heavy for sure. Its geometry is perfect. Every time I pick it up I think of Galileo and Einstein. If it were solid gold, it would cost $148,000. This cube was born in an exploding star. Probably from what is now our own sun, way back in the day. I put a paper clip on it and drop both, and they both fall at the same rate. Incredible. The edges and corners are a bit sharp.

This was a great buy! Excellent cube for density comparisons! I bought this as part of a larger display for my family, guests, and myself to marvel at the various densities if metals. The quality is great, along with the markings. And it makes for a great looking display. Great value for the price!

For some reason I cannot give separate reviews for the two cubes I purchased. Mg - There are relatively small machining marks on the cube, unfortunately one is on the front and goes thru some of the print. Corners are sharp and could be dangerous, but I knew that going in, cleaning that up would be a more expensive cube. Overall - I am quite pleased, got this with a tungsten cube for comparison. W - This cube appears to be perfect, no machining marks. Very pleased, would recommend. It is 'trippy' to hold the Mg cube for some time, roll it around in the hands. Then set it down and pick up W - whoa!

Fun little gift or part of a personal collection. I strongly recommend handling with gloves as pure copper stains very easily (from experience, unfortunately.) don’t have tools to verify purity unfortunately

It's in perfect condition; comes in bombproof packaging, including a cubic plastic box.

Amazing very precise 1.5 inch or 38.1 mm very beautiful

Thick rock make man happy 10/10. its about as heavy as you pressing your finger down. u can put it on a fidget spinner and it wont move, flick coins at it and it wont move. very happy

seems as described, a good solid cube of high purity nickel, no complaints here :)

Très petit et à la mode pour donner

Super nice going well with my collection of 1.5 inches cube