Quote - You can assign different Smoothing ID's to the metal and diamond polygons using Poser's grouping tool.

Grouping tool. Half the time it doesn't work properly. It's one of those aspects of Poser that needs a complete re-design. But, I suppose I'll have to struggle with it.

Quote - Selecting the polys shouldn't be much of a problem as you can select by material zone.

Selecting is the whole problem. It doesn't recognise my materials and clicking/try to select anything does nothing. Which is why I try to avoid it. I must be doing something seriously wrong...

Thanks again, though, Martin... I'll have another go.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks