In 1861, Emily Dickinson wrote a poem with no name, only the numeric title 320. In it, she speaks of the gradual metamorphosis of sand into a gem such as the pearl. I have long believed her poem mirrors the journey of the writer through the revision process.
We play at Paste—
Till qualified, for Pearl—
Then, drop the Paste—
And deem ourself a fool—
The Shapes—though—were similar—
And our new Hands
Dickinson, Emily (1961). Poem 320. The Complete Poems of Emily Dickinson. Ed. Thomas H. Johnson. New York: Little, Brown and Company.