Genuine, lab-created Alexandrite
Alexandrite is the color-changing chromium-bearing variety of chrysoberyl. Its high hardness (8.5) and durability make it suitable even for ring wear, and that along with its incredible combination of colors.
Lab-created Alexandrite is quite uncommon. Synthetic alexandrite is mostly grown for industry, where it is used in some particular high-end laser systems, and the process to grow it is very expensive. Very little is produced anymore, and even when it was produced it was uncommon on the gem market. Usually instead lab-created sapphire with a color change effect was sold as Alexandrite, but that material really can’t hold a candle to alexandrite.
Created by pulled Czochralski method.