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The Mystery of the Jade Discs | National Geographic


most people I think when they’re

most people I think when they’re thinking about Jade

thinking about Jade

thinking about Jade imagine a bright green material that we

imagine a bright green material that we

imagine a bright green material that we commonly see in jewelry but the Chinese

commonly see in jewelry but the Chinese

commonly see in jewelry but the Chinese jade tends not to be that bright green

jade tends not to be that bright green

jade tends not to be that bright green material it tends to be darker more

material it tends to be darker more

material it tends to be darker more subtle colors

subtle colors

subtle colors [Music]

[Music]

[Music] the freer possesses one of the largest

the freer possesses one of the largest

the freer possesses one of the largest collections of ancient shades from the

collections of ancient shades from the

collections of ancient shades from the Neal the culture that we now call Lee

Neal the culture that we now call Lee

Neal the culture that we now call Lee Jung Joo the culture is named after its

Jung Joo the culture is named after its

Jung Joo the culture is named after its first discovery site near Hangzhou China

first discovery site near Hangzhou China

first discovery site near Hangzhou China which is essentially doubt west of

which is essentially doubt west of

which is essentially doubt west of Shanghai be discs are essentially round

Shanghai be discs are essentially round

Shanghai be discs are essentially round flat doughnuts they’re created from in

flat doughnuts they’re created from in

flat doughnuts they’re created from in general

general

general nephrite which is a specific kind of

nephrite which is a specific kind of

nephrite which is a specific kind of jade material they were clearly

jade material they were clearly

jade material they were clearly important to the society that created

important to the society that created

important to the society that created them they’re found in Chinese tombs

them they’re found in Chinese tombs

them they’re found in Chinese tombs elite burials often in large number the

elite burials often in large number the

elite burials often in large number the ongoing mystery is exactly why they were

ongoing mystery is exactly why they were

ongoing mystery is exactly why they were made and why they were put in Tunes I

made and why they were put in Tunes I

made and why they were put in Tunes I think that the shape of the B was chosen

think that the shape of the B was chosen

think that the shape of the B was chosen because they learned how to work that

because they learned how to work that

because they learned how to work that shape using rotating tools a turntable

shape using rotating tools a turntable

shape using rotating tools a turntable or you know some type of mechanical eyes

or you know some type of mechanical eyes

or you know some type of mechanical eyes mechanical device to rotate the Jade we

mechanical device to rotate the Jade we

mechanical device to rotate the Jade we have a lot of ideas about how Jade’s

have a lot of ideas about how Jade’s

have a lot of ideas about how Jade’s were worked and we are quite sure they

were worked and we are quite sure they

were worked and we are quite sure they were largely worked with mineral

were largely worked with mineral

were largely worked with mineral abrasives so through the abrasive

abrasives so through the abrasive

abrasives so through the abrasive process of rubbing the surface the Jade

process of rubbing the surface the Jade

process of rubbing the surface the Jade one way or another whether it’s sawing

one way or another whether it’s sawing

one way or another whether it’s sawing or creating a drill hole mineral braces

or creating a drill hole mineral braces

or creating a drill hole mineral braces would have been used because no tools

would have been used because no tools

would have been used because no tools would have been available during the

would have been available during the

would have been available during the Neolithic period clearly it was not made

Neolithic period clearly it was not made

Neolithic period clearly it was not made by average people these were highly

by average people these were highly

by average people these were highly trained artisans who were responsible

trained artisans who were responsible

trained artisans who were responsible for making these objects the material

for making these objects the material

for making these objects the material itself is rare notoriously difficult to

itself is rare notoriously difficult to

itself is rare notoriously difficult to work so that creation of these objects

work so that creation of these objects

work so that creation of these objects in nephrite represents a great

in nephrite represents a great

in nephrite represents a great expenditure of social wealth at the time

expenditure of social wealth at the time

expenditure of social wealth at the time normally when Jade objects come into our

normally when Jade objects come into our

normally when Jade objects come into our laboratory for examination the first

laboratory for examination the first

laboratory for examination the first thing we do is we study it visually

thing we do is we study it visually

thing we do is we study it visually under a microscope the curator – usually

under a microscope the curator – usually

under a microscope the curator – usually would like to know the mineral

would like to know the mineral

would like to know the mineral composition of the object we use

composition of the object we use

composition of the object we use techniques such as x-ray diffraction and

techniques such as x-ray diffraction and

techniques such as x-ray diffraction and Fourier transform infrared spectroscopy

Fourier transform infrared spectroscopy

Fourier transform infrared spectroscopy to analyze the Jade material we look for

to analyze the Jade material we look for

to analyze the Jade material we look for evidence of manufacturing to learn how

evidence of manufacturing to learn how

evidence of manufacturing to learn how the object was made that includes

the object was made that includes

the object was made that includes looking at the overall shape and form of

looking at the overall shape and form of

looking at the overall shape and form of the object and more detail look at the

the object and more detail look at the

the object and more detail look at the tool marks left on the surface of the

tool marks left on the surface of the

tool marks left on the surface of the Jade because of the development of

Jade because of the development of

Jade because of the development of archaeology in China and the great

archaeology in China and the great

archaeology in China and the great interest in Liang to culture it’s

interest in Liang to culture it’s

interest in Liang to culture it’s couraged us here at the Museum to use

couraged us here at the Museum to use

couraged us here at the Museum to use our collection of some 125 objects as a

our collection of some 125 objects as a

our collection of some 125 objects as a kind of sample to improve our

kind of sample to improve our

kind of sample to improve our understanding of the manufacturing

understanding of the manufacturing

understanding of the manufacturing techniques of this ancient culture

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