Meng-meng LI, Ya-jun TENG, Hong-lin TAN, En-dong ZU. Study on Freshwater Cultured White Pearls From Anhui Province Based on Chromaticity and Raman Spectra[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1504
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 5, 1504 (2022)
Fig. 1. Photos of freshwater cultured white pearls samples from Anhui
(a): The first batch of samples; (b): The second batch of samples; (c): The third batch of samples
(a): The first batch of samples; (b): The second batch of samples; (c): The third batch of samples
Fig. 2. The Raman spectral of peals
(a): Raman spectra of three different batches of white pearls; (b): Magnified peak of 1 132 cm-1; (c): Magnified peak of aragonite
(a): Raman spectra of three different batches of white pearls; (b): Magnified peak of 1 132 cm-1; (c): Magnified peak of aragonite
Fig. 3. The whiteness values of the three batches of samples
Fig. 4. Photomicrographs of freshwater cultured white pearls from Anhui (x10)
(a): 3.6; (b): 1.3; (c): 2.5; (d): 2.2
(a): 3.6; (b): 1.3; (c): 2.5; (d): 2.2
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Table 1. The chromaticity parameters, whiteness values and R values of the first batch of samples from Anhui in the CIELAB color space
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Table 2. Color classification of freshwater cultured white pearls from Anhui
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