"I had observed agates, raw gems, petrified Wooden plus some fairly amazing rocks with pink and orange veins walking a three-mile extend over a mountain road. I haven't got a rock tumbler so I polished them by hand. They turned out best. "..." much more Rated this text: หินขัดแม่พิมพ์ / https://beediadiamond.com/catalog/polishing-stones