He wrapped them carefully, neatly 
in costly green silk. 
 
Roses of ruby, lilies of pearl, 
violets of amethyst. As he himself judged, 
 
as he wanted them, they look beautiful to him; not as he saw 
or studied them in nature. He will leave them in the safe, 
 
a sample of his daring and skillful craft. 
When a buyer enters the shop 
 
he takes from the cases other wares and sells -- superb jewels -- 
bracelets, chains, necklaces, and rings.
Constantine P. Cavafy
http://www.poemhunter.com/poem/on-the-shop/