Chromium’s name comes from the Greek word chroma, meaning color. French chemist Louis Nicolas Vauquelin named it so because of the multitude of colorful compounds it can form, such as emerald green, ruby red, and chrome yellow. Chromium is the element responsible for these gemstones’ vivid colors. He discovered it in 1797 from crocoite ore.

In its pure form, it is a steely-gray, lustrous metal with a strong potential for high polish.

It is one of the hardest elements, ranking among the top three along with carbon and boron.

It is magnetic below 38 °C, but loses its magnetism at warmer temperatures.

In nature, it is found mainly as chromite, and most of its commercial use derives from this valuable ore.

Chromium is often used in glaze making and can impart a green hue to glass.

It was once employed in chromated copper arsenate to preserve wood, but this practice was phased out due to toxicity from its arsenic content.

It can also be found in nature alongside kimberlite pipes, and even in association with diamonds.

It is a key ingredient in stainless steel, giving the alloy both corrosion resistance and its characteristic shine.

Excessive exposure to chromium can cause skin ulcers and nasal complications.

The isotope Cr-50 possesses a half-life longer than the age of the universe.