Kunzit (as well as Hiddenit) is a variant of Spodumen mineral.
Kunzit was discovered in 1902, and was named after Tiffany & Co's main jeweler - George Frederick Kunz.
Most often it occurs in shades of light pink, but more vivid colors are possible and can achieve rare shades of vivid purple to purple. This is due to the content of small particles of manganese. When exposed to intense light, the color may fade over time, so it is better to protect both jewelry and crystals from light and store them in a case or box. And so, unfortunately, it is very often warming up to get a brighter color. Kunzite is pleochroic, which means it can change color by the angle you look at it.
Kunzit is one of the precious stones - it is widely used in jewelry and jewelery. Its hardness is 6.5 - 7 Mohs scale.