Causes of Color in Corundum Chart
32" x 20" (80 x 50 cm)
Natural corundum has six major chromophores that cause its array of colors. This chart shows the influence of these chromophores in various concentrations on a corundum sample’s depth of color. Published in conjunction with the Spring 2020 article by Emily V. Dubinsky, Jennifer Stone-Sundberg, and John L. Emmett, “A Quantitative Description of the Causes of Color in Corundum,” Gems & Gemology, Vol. 56, No. 1, pp. 2–28.
Usually ships in 3-5 business days.
Enter code CHARTS20 to receive 20% off when you purchase 3 or more charts.