Firstly, Make certain that you’ve taken off many of the grit from the stones. Grit can cause dullness, so make sure to clean them carefully with drinking water and a mild soap. - รถบริษัทไปส่งให้ (ในกรณีอยู่ในเขตขนส่งของบริษัท) Wash the rocks with cleaning soap and drinking water. Fill a bucket with heat water https://beediadiamond.com/catalog/polishing-stones