The jade in the picture is "agate", also known as agate, Kate Ma and agate. It is a chalcedony mineral, usually a banded block mixed with opal and aphanitic, translucent or opaque. Often used as an ornament or ornamental. Agate balls can often be seen in ancient funerary objects. Natural agate does not exist green, but it can be turned green by artificial methods. The processed agate is very beautiful, full of luster, and the color is quite layered. Agate has a variety of color ring patterns, the texture is very similar to crystal, delicate and free of impurities, with glass luster, overlapping layers, ripples, concentric, mottled, layered and other patterns.

Nowadays, "agate" is very precious, and good quality "agate" can easily be auctioned to millions or even more. Even under the financial shock in 2008, many artworks were greatly reduced in price, while "agate" went against the trend and still increased by 28%. What caused a sensation was that during the autumn auction in Hong Kong in June of 20 14, a "agate ornament" with good appearance was taken away by Hong Kong collectors at a high price of 3.65 million yuan, and the collection market exploded instantly. Agate has gradually become a hot spot in domestic collection, with unlimited appreciation space.