The name jade is derived from the Spanish 'piedra de ijada', loin-stone, jade having been recognised by the Amerindians as a remedy for kidney ailments. In prehistoric times, however, it was esteemed rather more for its toughness, which made it an ideal material for weapons and tools. Yet as early as 3000 B.C. jade was known in China as 'yu', the 'royal gem'. For centuries, jade was thought to be a single gemstone, but in 1863 two types were recognised: jadeite and nephrite. Both are tough, fine-grained rocks, suitable for carving. The most prized variety, imperial jade, is a rich emerald green, due to chromium. Jadeite commonly has a dimpled surface when polished. In general, the value of jade is determined according to its colour and the intensity of that colour, the vivacity and texture, and its clarity and transparency. Jade is found in metamorphic rocks and is alluvial pebbles and boulders. Some develop a brown skin due to weathering and is often incorporated into carvings and worked pieces. The most important source of jade is Burma. Symbolic energy and beauty, the traditional and the modern are combined in jade in a particularly
harmonious way. And in gemstone therapy it is said that jade 'stimulates creativity and mental agility on the one hand, while also having a balancing and harmonising effect.' So this beautiful gemstone brings us joy, vivacity and happiness all at the same time.
