So here are my current results using sodium thiosulfate crystals, the first photo with the darker ring is the day of cut. Second picture 2 days later, and latest one today, a week after cutting. I did plane them at some point but I think they are now back to the point they would have been regardless. I am also attaching a picture of how dark the fragrance is supposed to discolor to. This is similar to a prior experiment where the fragrance did not discolor the soap to a dark brown but did to a dark beige