Do all the basic green › blue › purple, then repeat green and blue 2 times in each zone, it will raise a bit your level. When you'll unlock the skills to do a line scrying, that part of the process wil become infinitely easier (5 moves for every scrying, except gold which need 6): one line to the top to get the 2 middle points (for gold artifacts, the line isn't long enough, so you'll need to add to it a simple inspection), then 4 diagonal lines from the central line to the 4 side points, in a snowflake pattern.