Jade Jade Jade refers to an ornamental mineral, mostly known for its green varieties. It can refer to either of two different minerals: nephrite, a silicate of calcium and magnesium, or jadeite, a silicate of sodium and aluminium. Jade is featured prominently in ancient Asian art, as well as having an important place in many other cultures. The English word "jade" is derived (via French "l'ejade" and Latin "ilia" "flanks, kidney area") from the Spanish term "piedra de ijada" (first recorded in 1565) or "loin stone", from its reputed efficacy in curing ailments of the loins and kidneys. "Nephrite" is derived
Theory of forms admitted were impossible to know. Nevertheless, he formulated a very specific description of that world, which did not match his metaphysical principles. Corresponding to the world of Forms is our world, that of the shadows, an imitation of the real one. Just as shadows exist only because of the light of a fire, our world exists as, "the offspring of the good". Our world is modeled after the patterns of the Forms. The function of humans in our world is therefore to imitate the ideal world as much as possible which, importantly, includes imitating the good, i.e. acting morally. Plato