"I'd located agates, Uncooked gems, petrified wood plus some very amazing rocks with pink and orange veins walking a three-mile extend on the mountain road. I don't have a rock tumbler so I polished them by hand. They turned out best. "..." far more Rated this short article: เหมาะสำหรับขจัดส่วนหนาของสนิมบนทุกแบบของโมลด์และเหล็กตาย ใช้ขัดแม่พิมพ์ https://beediadiamond.com/catalog/polishing-stones