Quantitative Evaluation of the Color of Emerald obtained from First-Principles Calculation

Abstract

Quantitative evaluation of the agreement between the theoretical color and the experimental one is not easy. The color can be numerically represented by the chromaticity coordinates, which can be calculated from the absorption spectrum. In this work, chromaticity coordinates were calculated from the theoretical absorption spectra of emerald and the agreement between the theoretical color and the experimental one was evaluated quantitatively by calculating the color difference.