a gemstone that was discovered in the 19th century, alexandrite exhibits color-changing properties shifting between shades of purplish-red and bluish-teal. natural alexandrite is a very scarce material and is much rarer than diamonds! fortunately, alexandrite can be lab-grown at a fraction of the cost. it is one of three birthstones of June and one of our absolute favorite gemstones to work with. it ranks 8.5 on the Mohs Scale of Hardness, making it one of the most durable gemstone options...