02-18. Chrysoberyl #7.
Chrysoberyl as fruits on a vine! So it looks like from the database resource of S. Weber, M. Grodzicki, W. Lottermoser, G. Redhammer, G. Tippelt, J. Ponahlo & G. Amthauer.
This is a composition after their calculation of the electronic structure of a natural alexandrite from Malyshevo in the Ural mountains, Russia. Nice way to end the week!