For 10 points, identify this William Butler Yeats poem named for a rich blue stone.
In one section of this work, the speaker asserts that a certain commodity "cannot grow by an inch or ounce," before moving on to discuss the "handiwork of Callimachus."  The speaker, who had also previously asserted that "All things fall, and are built again," later imagines a figure asking for "mournful melodies" and "delight[s] to imagine" a long legged bird, a "symbol of longevity," flying over a trio still seated on the mountain and the sky.  The second section of this 56 line work reads, "All perform their tragic play, / There struts Hamlet, there is Lear, / That's Ophelia, that Cordelia," while it begins with a stanza about "hysterical women" who criticize the poet's inefficacy and dread the coming of the "Aeroplane and Zeppelin."  Composed to commemorate a birthday gift given to the poet by his friend, Harry Clifton, it depicts a set of "Chinamen" carved out of the title material.  For 10 points, identify this William Butler Yeats poem named for a rich blue stone.
In one section of this work, the speaker asserts that a certain commodity "cannot grow by an inch or ounce," before moving on to discuss the "handiwork of Callimachus."  
"Lapis Lazuli"