Rare Chinese Limestone Commemorative Pillar, Northern Song, 998

• Patination / Patina - In broad terms, patination refers to the exterior surface appearance of the timber, the effect of fading caused by exposure to sunlight and air over the course of a century or more, changing the piece to a soft, mellow colour.
  
  As patina is very difficult to replicate, it is one of the most important guides to determining the age of furniture.
  
  Patina is also the term applied to the bloom or film found on old bronzes due to oxidisation.
• Important - Important is a word used in the antique trade to indicate an object should be ranked above other similar objects, and is therefore more valuable.
  
  The object could be considered important because it is by a famous designer or maker, has been shown at a major exhibition, is of exquisite workmanship, is rare or is a "one-off", was made for an important patron, and so on.
  
  Even further up the pecking order are objects that are described in catalogue descriptions as highly important or extraordinarily important.

This item has been included into following indexes:

• Chinese antiquities by dynasty
  • Northern Dynasties 119
  • Song Dynasty 648