I think it is <span>Diamond</span>
Since you have provided no options, the best I can do is to describe lithography and hope that it helps:
In the first step, an image is drawn on a stone, typically with wax or oil. Then ink is spread on the whole stone, but it will not stay on the parts with oil or wax, only on the other parts. Then paper is pressed against the stone, and an image appears, because the ink adheres to the paper- you can then make multiple copies of the image.
Write in one of the various standard rhyme schemes (Shakespearean, Petrarchan, or Spenserian). Format the sonnet using 3 quatrains followed by 1 couplet. Compose your sonnet as an argument that builds up as it moves from one metaphor to the next. Ensure your poem is exactly 14 lines.