Grandidierites are hands down one of the most rare minerals on the planet. Gem quality grandidierites enter the market once every 5 or more years. They can exhibit an intense bluish green or greenish blue color. Most of the time, the gemstone is opaque and translucent due to the inclusions. Grandidierites are found in Sri Lanka (Ceylon) and Madagascar. Finding a gem with an intense color, great clarity and over 3 carats is exceptionally rare. This stone is a true gift from Mother Nature.