Nishan inkstone was once a rare item, owned mainly by celebrities and emperors. That changed in 1978 when a factory in Qufu began to produce it again.

Since then it has become a regular feature at Chinese and international exhibitions.

Nishan inkstone is normally pale grey-yellow, pale fawn, pale cream-brown or parchment colored and often comes inscribed with pine tree patterns.

The stone is medium hard and contains minerals such as quartz and pyrite, which make it easier to grind ink on and reduce damage to brushes.

Other minerals, including illite and chlorite, maintain the inkstone's shelf life as well as helping the ink to remain wet longer on the stone.

According to Ding Hui, a Nishan inkstone expert from Qufu, "What makes Nishan inkstone different from other types is the natural stone patterns it has, each one different. It is also special because of its connection to Confucius."

Nishan inkstone, "isn't picky in terms of partners", he says, meaning it is suitable for all kinds of paint and brushes.

Besides being an artist's tool, Nishan inkstone is today a collector's item, with the number of high-quality stones fairly limited. Pine tree or wave patterned stones are the most collectable, reflecting an appreciation of the beauty of nature that runs throughout much traditional Chinese art.

Ding is skilled in making inkstones and says the most difficult part of the process is being able to imagine the final inkstone when faced with the raw stone material. It is important to work with the existing patterns of the stone, he says, using them to improve the final product.

Once the theme of the inkstone has been decided, the carving can begin. This starts with cutting the pond where the ink will go and smoothing the edges of the stone. In some cases this can be a relatively easy process if the stone bears a natural inkstone shape.

The best inkstones are not about how much carving goes into their creation, but about the concept behind them and blending craftsmanship with nature, he says.

Nishan inkstone, like Shandong inkstones in general, relies on simplicity for its beauty. It looks more rugged and perhaps honest to its task than many other inkstones, a combination of practicality, craftsmanship and natural beauty. It is perhaps one of few artists' tools in the world that has itself become a work of art.

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