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About Jade

What is Jade

The composition of Jade is divided into two different minerals. One mineral is Amphibole, and the other is Pyroxene. These two kinds of jade are named Nephrite and Jadeitite individually. Jadeite belongs to Jadeitite and consists of silicon, acid, aluminium and sodium. It is produced in Metamorphic rock and forms crystal which is compact microcrystalline. Jadeite usually accompanies Glaucophane, Muscovite, Lawsonite, Aragonite and Quartz. Besides, the hardness of Jadeite on the Mohs scale is between 6.5 and 7.

History of Jadeite

Jadeite was extremely prevalent during Qing Dynasty. It was collected by the royals and nobles in the beginning and then gradually became popular among civilians. Most of Jadeite antiques that we see at the present time are passed down from Qing Dynasty. In the Chinese culture, people admire Jadeite very much and regard it as propitious jewelry, which leads it to high value. Jadeite is a kind of gemstone with high price in the traditional culture all over the world and also becomes a new favorite item in international auctions. Nowadays, Jadeite is still considered precious gemstone with cultural features in the region of East Asia.

Enhancement and Treatment of Jadeite

  • Natural

    The ores of Jadeite are made into jewelry through the process of mechanical cutting, grinding and polishing. Its texture and color are natural without any enhancement or treatment.
  • Heating

    Jadeite can be heated to accelerate the oxidation process, which will change its original colors from yellow or brown to bright red. This may be a slight or huge change of color.
  • Bleaching

    The ores of Jadeite usually accompany other minerals which form stains or colored spots in green Jadeite. Bleaching is a traditional technique. People soak Jadeite into plum juice, fruit acid or hydrochloric acid to remove impurities and inclusions. After bleaching, only green color remains, and Jadeite looks purer and nicer.
    • Bleaching and Waxing

      Jadeite is placed in mild acid liquid in a short time to remove impurities on the surface and enhance its appearance. In this process, internal structure still remains undamaged. Next, Jadeite is soaked with wax to make up small acid-etched marks on the surface.
    • Bleaching and Impregnating Polymer

      Jadeite is placed in strong acid liquid for a long time to remove impurities on the surface and internal inclusions. As the result, Jadeite becomes more transparent. However, the internal structure of Jadeite is damaged and becomes fragile in this treatment. Therefore, it needs to be impregnated with polymer to strengthen its structure.
  • Dyeing

    Most of Jadeite ores are white, and Jadeite can be dyed to produce more desirable color. In this process, Jadeite is soaked in chemical dye barrel, and liquid dyes can infiltrate the structure of Jadeite to color the stone artificially.
  • Waxing

    Jadeite is placed into liquid wax formed by heating paraffin wax or insect wax and then wiped with a cloth, which can cover the slight marks on the surface and enhance the best luster of Jadeite.
    • After Jadeite is polished, there are still some small pits remaining on the surface. These pits will lead to unevenness and can be discerned with magnifier. However, they can be filled with wax which makes the polished surface much smoother.
    • Waxing can be also used to cover carved grooves which is difficult to polish on the Jadeite carvings.
    • Through the bleaching process, there are acid-etched marks remaining on the surface. Waxing can be also used to cover these marks.

How to Take Care of Jadeite

  • Although Jadeite has a high rating in Mohs hardness scale, it is easily cracked. Collision may damage the inner structure and affects the firmness of the Jadeite without showing any flaws on the surface. Please avoid not to knock Jadeite against other items which are also wearing on your hand, especially when doing hand gestures.
  • Since high temperature is bad for Jadeite, the stone cannot be placed under the sunlight or soaked in hot water, please also take off Jadeite jewelry when cooking.
  • Take off Jadeite jewelry and put it in a safe place before taking bath, swimming or doing exercise or it may damaged during the actions.
  • Cosmetics and chemicals are harmful to Jadeite, please keep the it away from them to evade erosioning.
  • When we touch or wear Jadeite often, it remains its luster, even so, it needs to be cleaned regularly to prevent erosioning from sweat. When washing Jadeite, clear water or soap water without adding extra chemical detergents are fine. Soft brush or toothbrush are ideal tools for cleaning Jadeite but please wash the dust off before brushing to restrain Jadeite from being scraped.