It is above all clear and not be to repair, if be repaired word, your stone is discarded as useless. When clearing so, never hurt the human body of stone, even if be,go not at all.
Father-in-law stone belongs to rock kind, stone qualitative density is high hardness is so tall also. And the father-in-law stone with strong water more very.
Of stone clearing is to must want to do, because stone outdoors is mixed necessarily by environmental pollution,erode, and pollution and erodent material are varied, using clear water only is to clean what do not drop. The method that introduces here uses oxalic acid namely.
Invade stone bubble is controlled 10 days probably in oxalic acid, brush with wool everyday brush; After be being taken out, put in clear water to immerse 10 days or so again (this makes acid) , remember wanting to change water everyday. If feel OK, take out put stone the clear water that added salt to relay add immerses, the purpose is to increase brightness.
Actually not only it is father-in-law stone, the method that if hardness is enough tall stone clears is same oh.
