Pumice powder is used for taking scratches and marks out of glass.
This is a specialist powder which is mixed with water to form a paste for scratch removal on glass. It is much coarser than cerium oxide and used as a first stage to take out marks and lines in glass or crystal. It is then commonly followed buy cerium oxide for a polished finish.
Used by watch makers for glass watch fronts and other decorative glass or crystal items.
Can be used for small or large areas with mops, calico, felt or chamois mops.
Care should be taken to keep the process wet to avoid heat build up which could damage the glass.