An Alternative choice is to work with a rock tumbler with a polishing stage. This will assistance to present your stones that excess shine and make them definitely stick out. หินขัดแม่พิมพ์ / หินน้ำมัน สำหรับขัดขึ้นเงา และขัดรอยไหม้ Pick out and type your rocks by form and hardness. Before you begin polishing your Successfully Submitted (Awaiting Approval)