There's some yellow in there on the working surface. You should enjoy that ark, it was my main ark for finishing razors for the last 9 years. Probably half the wedges I honed in that time went across it. It's a really really nice stone. I think it may be one of the solid color label use sperm oil pikes just missing said label going by the box. I just finally dealt with lapping the replacement and couldn't justify keeping it.