... of stele,tombstone,merit monument, guiding monument,caligraphy monument,art stamp,etc. Main purpose of sintered diamond burin/graver:* Used ... of stele,tombstone,merit monument, guiding monument,caligraphy monument,art stamp,etc.* Used to work the finishing on different materials ... natural bluestone,marble,granite, jade,etc.* Used to finish the art glass, jade, screens, glass ornaments.* Used to work ...