Val Cox describes it as:
Beautiful variegation between purple and blue violet. For best results, use an oxygen rich flame and cool slowly.
I, of course, did not read that until after using it, so just used it the way I would use any glass, and it came out pretty fine anyway.
There is chunks of blue, which can separate and show a little green in them, ...
And chunks of purple, which display a colour very similar to the old Effetre EDP at its best, with spackles of blue.
I got the #2 grind - which is fairly large chunks. I really do find that the fine-ness of the size makes a difference in the end look.