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A bi is a flat jade disc with a circular hole in the centre. Neolithic bi are undecorated, while those of later periods of China, like the Zhou dynasty, bear increasingly ornate surface carving (particularly in a hexagonal pattern) whose motifs represented deities associated with the sky (four directions) as well as standing for qualities and powers the wearer wanted to invoke or embody.
The bi and cong are types of objects only found in jade in early periods, and probably had religious or cosmic significance. The bi is a circular disk with a hole, originally usually plain, but increasingly decorated, and the cong is a vessel, square on the outside but circular inside. In later literature the cong represents the earth and the ...
Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca 2 ( Mg , Fe ) 5 Si 8 O 22 (O H ) 2 . [ 1 ]
Celadon (/ ˈ s ɛ l ə d ɒ n /) is a term for pottery denoting both wares glazed in the jade green celadon color, also known as greenware or "green ware" (the term specialists now tend to use), [1] and a type of transparent glaze, often with small cracks, that was first used on greenware, but later used on other porcelains.
A bi disk is a ritual object in the shape of a flat ring . The earliest archeological specimens were carved from stone (usually nephrite) and date back to the late Neolithic period; they became important burial elements during the 3rd millennium BC. [13] They were placed on or near the head of the deceased person.
[citation needed] The term jade is commonly used to cover the nephrite, jadeite and chloromelanite groups of minerals, all of which are hard and attractively coloured. Bowenite is called False Jade or Jade look alike and is softer than true jade. Jade comes in attractive colours ranging across dark green, pale green, white and yellow.
Former DOT inspector general Eric Soskin told BI there are a few ideas the government could explore. As US companies continue their full-speed race to deploy fully autonomous vehicles, ...
Celadon In relief refers to celadon made using embossing technique. There are two kinds of embossed celadon. The first is celadon which must be embossed to show its shape, and the other is celadon with embossing used for decorative purposes. Incised Celadon is made by engraving technique, which shows patterns that enter the surface of the bowl ...