This product: Grandidierite is an extremely rare gemstone. Discovered in 1902 off the southern coast of Madagascar, it was named after the French explorer Alfred Grandidier. Most stones are generally opaque and contain inclusions. In 2014, a raw stone weighing 800 kg was found, but only 30 gem-quality pieces were obtained. There is information that the export of raw stones from Madagascar is generally restricted, and their distribution is particularly limited. This is one of those gem-quality pieces. Comes with a gem certification from the Tokyo Gem Science Academy. Weight: 0.398 carats Shape: Fancy cut Vivid blue