"I had discovered agates, raw gems, petrified Wooden plus some really cool rocks with pink and orange veins walking a three-mile stretch on a mountain highway. I haven't got a rock tumbler so I polished them by hand. They turned out great. "..." additional Rated this short article: เหมาะสำหรับขจัดส่วนหนาของสนิมบนทุกแบบของโมลด์และเหล็กตาย ใช้ขัดแม่พิมพ์ https://beediadiamond.com/catalog/polishing-stones