Jeweling metals, need info

[mklotz]

It looks like what we call "white diamond" polishing material here in the USA. A bit too fine for jeweling though, as you've proved, it produces the characteristic swirls. Do try to get some lapping grease in the 100-200 grit range.

At any rate, you seem to have proved the leather-on-dowel tool works reasonably well. Keep up the experimenting; you'll soon be an expert.