Updated! How Is This Done? Chinese Carved Leaves

Awesome, but how did you do it? I was directed to this item and am amazed yet there is a very strong WTF yanking at the back of my mind which only grows the more I've looked into it. Ostensibly these are said to be the result of hand carving. I kind think that this is either done with a printing process or we're looking at a massive human rights violation here, kidding (kind of).