
História

Meet Natural Stone-Jade
Jade ( Jade French , Spanish piedra de la ijada , " stone edge " ) is a very hard and compact ornamental stone , varying in color from white to dark green . Means the combination of two minerals, nephrite in the form of a mineral called actinolite and jadeite . It is usually used in decorative objects , figurines etc on .
history
Jade is a name that was applied to ornamental stones that were brought to Europe from China and Central America. Only in 1863 it was realized that the term " jade" was being applied to two different minerals . The jadeite is almost never found in individual crystals and is composed of microscopic crystals blocking that produce a very durable material . Nephrite is actually a non - mineral, but a variety of the mineral actinolite . The nephrite variety is composed of fibrous crystals woven into a tough compact mass . Other varieties of actinolite are completely different from nephrite . The hardness of jade is remarkable. Has a greater resistance than steel and is put to work by many early civilizations for axes, knives and guns . It was later that jade became a symbolic stone used in ornaments and other religious artifacts during the eons . Jade is still valuable for its beauty . Its many colors are appreciated , but the emerald green color that jadeite produces so well, being highly sought after by collectors of artwork . This emerald green jade called " Imperial Jade " is colored by chromium. Other colors are influenced by iron ( green and brown ) and manganese is thought to produce the violet colors . The nephrite is generally white, green and cream , when jadeite can have the full range of colors of jade . It is used in Olympic medals .