High Resolution TEM Analysis of the Nacreous Layer

According to the optical model of a pearl (illuminant model) based on a computer-assisted visual simulation, the aragonite layer in the nacreous layer of a pearl should be highly transparent and also have point light source transmitting rays in 

The authors thank Mr. Takashi Inaba and Mr. Masahiro Chiba of Hitachi Kyowa Engineering Co., Ltd., for the FIB and TEM analyses. 

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