To begin with, make sure that you’ve taken off every one of the grit from the stones. Grit can cause dullness, so make sure you clean them comprehensively with h2o and a gentle soap. - รถบริษัทไปส่งให้ (ในกรณีอยู่ในเขตขนส่งของบริษัท) Progress as just before using the exact same proportions of grit and h2o https://beediadiamond.com/catalog/polishing-stones