Can you carve blue words on the stone?

All right. Judging from the relevant public information, inscriptions are generally painted with red, green, golden yellow and lake blue after calligraphy is engraved, which is also the most eye-catching, so it is good to engrave blue words on stones. In ancient times, people used knives to carve characters on wood or stone, but today people can carve various fonts on various materials in many ways.