The term Jewels of the Empire was used to refer to the six most powerful servants of the Emperor of Rokugan, each of whom was known as a Champion and was associated with a specific gem, including the emerald, jade, topaz, ruby, amethyst and turquoise, thus giving rise to the term. Each Champion had a specific task to fulfill in the Empire, and the Champion was usually (although not always) chosen through a tournament that was designed to produce a winner who was the most skilled practicioner of a certain art vital to the Empire's administration.