1.0-Inch Titanium Cube

Yes. Each metal cube is a solid piece of the material stated in its specifications, rather than a hollow shell or plated object. That matters because the point of the cube is to make properties such as density physically tangible: equal-sized cubes in different metals can feel dramatically different in the hand.

Use the dimensions in the individual product specifications as the reference for that cube. Each cube is machined as a precise geometric object with chamfered edges, so the faces are flat and the corners are comfortable to handle.

That depends on the metal. Copper develops a patina, a unique darkening of the material which makes every piece special. Titanium, tantalum and niobium change very little. Keep a cube clean and dry if you'd prefer to hold on to its original look.

For routine care, wipe the cube with a clean, soft cloth and avoid abrasive cleaning that could alter the finish. If the surface has changed naturally, particularly on copper, decide whether you want to preserve that patina before using any metal-cleaning product.

Because density is mass packed into a given volume. Two cubes can have exactly the same dimensions but contain very different amounts of mass because their materials have different densities. Comparing equal-sized cubes is one of the simplest ways to experience that material property directly rather than as a number in a table.

This cube weighs 73g. That is enough to feel like a solid object, but relatively little for a complete 25.4mm cube of metal. The contrast between its substantial appearance and low mass is one of the most noticeable things about handling it.

One inch is an easy reference dimension: cubes made to the same external size can feel dramatically different depending on the element. Keeping the volume constant lets your hand register the change in mass, making the material difference much more intuitive than a density figure on its own.