Investigation of Factors Affecting the Color of Serpentine Jade from Shandong, China

The color of serpentine jade is affected not only by the chemical composition, but also some external factors. In this research, we quantitatively analyzed and influence light sources, backgrounds, thickness on its color. Thirty-six gem-quality samples from Tai’an, Shandong, China, were studied using eighteen Munsell neutral gray three sources (D65, F2, A). It was found that D65 source appeared to be most suitable for display sale N9 background can make grading more effective.