Jade is a collective term used to describe several metamorphic rocks, most commonly composed of the mineral jadeite, although nephrite is another frequent variety. These minerals form under conditions of extreme pressure and temperature, resulting in a highly durable, crystalline structure. Depending on its specific mineralogical makeup and impurities, the stone exhibits a wide range of colors, from deep greens and blues to creamy whites. From a geological perspective, jade is valued for its inherent hardness and resilience, properties that have led to its utilization in various forms of durable material throughout human history.