thanks for your futher thoughts. Not always easy to see, but am I correct in thinking that the outer surface of the green bowl appears to be as shiny and smooth as the inside?? As mentioned mine is not. On mine the outer surface is something akin to smooth orange peel - matt in texture, and quite rough towards the base - with an almost 'dried burst bubbles' effect. Looks as though the green bowl - after marvering - retained a good thickness of clear glass on the inside (like mine) so that - after grinding out the pontil - you are left with a clear area, which can be seen from the outside. In other words if you take away about a millimetre or tad more from the outside surface, you take away virtually all of the colour - and looks as though the pontil dish is also shiny on your bowl. Other differences when compared to the amethyst piece, such as the folded rim, ground pontil as opposed to snapped and actual colour may or may not be significant. Did you eventually get a definite attribution for the green bowl? The stepped upper section is - apparently - somewhat like the shape of some Nazeing designs. cheers Paul S.