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Laser & Optoelectronics Progress, Volume. 58, Issue 24, 2430001(2021)

Raman Spectrum Characteristics and Coloration Mechanism of Freshwater-Nucleated Pearls

Xiaoyi Yang1,2, Zhengyu Zhou1,2、*, Xiaoman Qi3, Zhiwei Zhang4, and Zongting Liao1,2
Author Affiliations
  • 1State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
  • 2Laboratory of Gem and Technological Materials, Tongji University, Shanghai 200092, China
  • 3Zhejiang Angeperle Company Limited by Shares, Zhuji, Zhejiang 311800, China
  • 4National Gemstone Testing Center, Shanghai 200122, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (6)
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    References (19)
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    Figures & Tables(6)
    FTIR spectrum of claret-colored pearl sample ZZ-01

    Fig. 1. FTIR spectrum of claret-colored pearl sample ZZ-01

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    Raman spectrum of claret-colored pearl sample ZZ-01 (aragonite peaks are marked)

    Fig. 2. Raman spectrum of claret-colored pearl sample ZZ-01 (aragonite peaks are marked)

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    Raman spectra of freshwater-nucleated pearls. (a) Claret-colored pearl sample ZZ-01; (b) magenta pearl sample ZZ-02; (c) saffron pearl sample ZZ-03; (d) yellowish pearl sample ZZ-04; (e) pink white peal sample ZZ-05; (f) argenteous pearl sample ZZ-06

    Fig. 3. Raman spectra of freshwater-nucleated pearls. (a) Claret-colored pearl sample ZZ-01; (b) magenta pearl sample ZZ-02; (c) saffron pearl sample ZZ-03; (d) yellowish pearl sample ZZ-04; (e) pink white peal sample ZZ-05; (f) argenteous pearl sample ZZ-06

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    Raman spectra of carotenoid standard samples. (a) β-catotene; (b) astaxanthin

    Fig. 4. Raman spectra of carotenoid standard samples. (a) β-catotene; (b) astaxanthin

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    Raman spectra of nacre of Hyriopsis. (a) SJFB-front; (b) SJFB-middle

    Fig. 5. Raman spectra of nacre of Hyriopsis. (a) SJFB-front; (b) SJFB-middle

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    • Table 1. Raman peaks attribution of colored freshwater-nucleated pearls, nacre of Hyriopsis and carotenoid

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      Table 1. Raman peaks attribution of colored freshwater-nucleated pearls, nacre of Hyriopsis and carotenoid

      SampleAttribution /cm-1
      ν3(CH3)ν2(C—C)ν1(C=C)2ν2ν1+ν22ν13ν2ν1+2ν2
      ZZ-01/0210171126150922382618301633343709
      ZZ-03/04--1135152622612649------
      SJFB-front10171126150922382618301633343709
      SJFB-middle--11351527----------
      β-carotene1005115315102160,23072660302233083670
      Astaxanthin1005115315142160,23072663303233363663
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    Xiaoyi Yang, Zhengyu Zhou, Xiaoman Qi, Zhiwei Zhang, Zongting Liao. Raman Spectrum Characteristics and Coloration Mechanism of Freshwater-Nucleated Pearls[J]. Laser & Optoelectronics Progress, 2021, 58(24): 2430001

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    Paper Information

    Category: Spectroscopy

    Received: Oct. 20, 2020

    Accepted: Jan. 22, 2021

    Published Online: Dec. 3, 2021

    The Author Email: Zhengyu Zhou (06058@tongji.edu.cn)

    DOI:10.3788/LOP202158.2430001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology