The flowers are very delicate and need to be only hand-plucked. Hence, harvesters (generally men) work round the clock to carefully pluck the flowers and pass it on to their women counterparts, who delicately extract the 3 stigmas from each flower. After this, the stigmas are dried by heating. Then they are packaged and sold. As you can see, the process of obtaining this saffron is a tedious one. This is why it is the most expensive and the rarest spice on the planet.