The outside (convex) surface is slightly darker than the inside (concave) surface though not quite as much as this scan suggests. The fabric is the same orange colour all the way through. The inclusions are interesting:
They are of two types: very minute, dark brown, pebble-like and smooth (on the left above); again minute, quartz-like, white/translucent (on the right).
The inside has two, not quite parallel, lines about 1.5 cms apart. Evidence of a tool used for smoothing, perhaps?This piece was at level 1 (in the first 10 cms). I normally riddle the first two levels but I decided to trowel instead this time. I am glad I did!
I am quite excited about this piece for some reason!