为了有效鉴别区分金黄色海水珍珠(简称金珠)和改色金珠, 通过拉曼光谱和紫外可见吸收光谱对二者进行了检测分析。结果表明, 拉曼光谱中, 金珠的谱线稳定杂峰少, 荧光背景弱, 改色金珠的谱线杂峰多, 荧光背景很强。0～1000 cm-1拉曼位移内金珠的光谱基线强度在1000以下, 改色金珠的光谱基线强度在2000以上; 金珠在拉曼位移275 cm-1处出现明显的拉曼特征峰, 改色金珠275 cm-1处的拉曼特征峰基本被荧光谱线覆盖而变弱或消失; 紫外可见吸收光谱中, 金珠在200 nm～400 nm的近紫外区有284 nm, 357 nm两个明显的紫外吸收峰。由于颜色处理过程中对珍珠表面破坏程度的不同, 导致改色金珠在近紫外区无特征吸收, 吸收峰发生红移(408 nm)或消失。

In order to identify and distinguish golden saltwater pearls and color-treated golden pearls, Raman spectrum and UV-visible absorption spectrum were used for testing and analyzing. The results show that in Raman spectrum, compared with color-treated one which has more miscellaneous peaks and higher fluorescence background, peaks are found more stable and less miscellaneous in golden saltwater pearls with a much lower fluorescence background. Between 0～1000 cm-1, the base lines of golden saltwater pearls are below 1000, but for color-treated golden pearls, they are higher than 2000. The intensity of 275 cm-1 Raman band in golden saltwater pearls is more stronger than that of the color-treated one, where it has been covered by the fluorescence background; In the near ultraviolet region (200 nm～400 nm) of UV-visible absorption spectrum, characteristic absorption peaks of 284 nm and 357 nm were found in golden saltwater pearls. But those characteristic absorption peaks in spectrums of color-treated golden pearls are missing, wihich are either red shifted (408 nm) or disappeared. According to the differences of Raman and UV-visible spectrums between golden saltwater pearls and color-treated golden pearls, they can be quickly and effectively set apart without any damage.