"I Had uncovered agates, Uncooked gems, petrified wood and a few very cool rocks with pink and orange veins walking a 3-mile stretch with a mountain highway. I don't have a rock tumbler so I polished them by hand. They turned out fantastic. "..." much more Rated this information: เคล็ดลับยืดอายุการใช้งานกระเบื้องแกรนิตโต้ Successfully Submitted (Awaiting Approval)