Cartier twice using diamond and platinum brooch birds produced material is a set of works has profound meaning. That the completion of the earlier works, the two birds are in a cage, another snuggle, and designers with the purpose of this pattern is to the war-stricken, people lost their homes to provide some solace. And after the completion of that works, the birds are in cages outside, thus implying the occupied France during World War II will finally usher in the liberation of the people will be free.