Demantoid garnet green color grading

Hello friends,

I do small-scale Demantoid mining and by now I’m looking to understand the color grading of this beautiful gemstone.

It seems that in the market the color G6/5 has the highest price but I remember that I read (on IGS) about G5/4 to be the rarest and most valuable color of Demantoid.

Please let me know if you have any experience with these two colors or any special information you know about the pricing of these colors.

I added pictures of my stones which I think are G6/5_G5/5_G5/4 (Am I right?)