First of all, make sure that you’ve taken out many of the grit from the stones. Grit might cause dullness, so make sure to wash them comprehensively with h2o and a delicate cleaning soap. ออกแบบหน้าบ้านสวย และปลอดภัยด้วยกระเบื้องปูพื้นไม่ลื่น If wikiHow has served you, please consider a little contribution to help us in https://beediadiamond.com/catalog/polishing-stones