 After that stage, the parts covered by lac and turquoise chips are polished with emery so the extra lac and little raised parts of the chips are flattened.That is the stage where the color of the turquoise chips becomes visible as turquoise and that of lac as black (or dark brown) in the spaces between the chips.After this stage is completed, if there is still some fallouts in some parts of the work, the object is heated again, and the empty parts are restored with small turquoise chips and lac.