Gemstones — Alexandrite

Alexandrite is a rare and unique gemstone that was first discovered in 1830 in the Ural Mountains of Russia. What makes this gemstone so unusual is its ability to change color depending on the type of light that it's exposed to. In daylight, alexandrite appears green, blue-green, or yellow-green, while under artificial light, it takes on a reddish-brown or purplish-red hue.The color-change phenomenon in alexandrite is due to the presence of chromium as an impurity within the mineral. Chromium absorbs certain wavelengths of light and emits them again in a slightly different wavelength, leading to the observed color change.In terms...