Ruby a mineral or a rock?

Answer 1

Rubies (and sapphires also) are compounds of a crystallized mineral called corundum that consists mostly of aluminum oxide (Al2O3).

Answer 2

Ruby is a mineral and a variety of the mineral corundum. It is a gemstone known for its red hue, which comes from traces of chromium in its crystal structure. Rocks are made up of one or more minerals, so ruby itself is not considered a rock.

Answer 3

The ruby's chemical composition is Al2O3, an aluminum oxide. The red color of a ruby, which is a kind of corundum, comes from chromium in it.

Answer 4

Rubies are an element.These are compounds of a crystallized mineral called corundum that consists mostly of aluminum oxide (Al2O3).

Answer 5

Ruby is a mineral.

Answer 6

Neither. They are mixtures.