Face up this standard round brilliant appears to have a nice even medium dark forest green (green with a blue touch), but it is hiding the truth. When I turned it over to check for inclusions/flaws etc. and rotated it, I could clearly see its tone value change threw the c axis color and the a/b axis color. So after seeing that this beautiful gemstone is eye clean and with fine crystal, I looked at the gemstone face up again. As I slowly turned the stone, I realized, as I now expected, that some angles of rotation produce a brighter flash than others. There was my confirmation of the stone having been cut with its table parallel to the c axis. I usually can clearly see four slice of pie segments, face up, on stones that are cut that way, but in this case the different colors/tone values mix so seamlessly that a casual look misses the effect. This neat and mysterious gemstone weighs 2.92 carats.