Colorimetric Characteristics of Metamerism of Yellowish Green Peridot

Abstract:

Fifty-one yellowish-green color 5mm×7mm oval faceted peridots are experimented by Color i5 to test their color parameters, and concept of metamerism is introduced into this article, to analyze the effects of color parameters on the color appearance of peridots. SPSS analysis indicates: wavelength λ has no correlation with metamerism index MI, but excitation purity Pe has significant correlation with MI (rPe×MI=0.826, 0.01), means with the increase of excitation purity, the color appearance of peridot tend to be more unsteady and change more with the illumination conversion. Simultaneously, metamerism index MI increase with increasing chromaticity C* and lightness L* (rC*×MI=0.979, rL*×MI=0.889, 0.01), means the change of color appearance increase with illumination conversion. In conclusion, when the yellowish-green of peridot is more saturate and brighter, the effect of illumination on color appearance is greater.

• Periodical: Key Engineering Materials (Volume 591)
• Pages: 277-280
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.591.277
• Online since: November 2013
• Authors: Wei Xi Tang, Ying Guo*, Li Xia Ma
• Keywords: Illumination, Metamerism, Peridot, Saturation

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DOI: 10.1002/col.5080120307

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