It is often said that saffron is worth its weight in gold because it is so difficult and labor-intensive to cultivate and harvest. For several weeks every fall, the crocus sativus flower blooms. ... At that moment, saffron producers throw themselves into the harvest. They pick the flowers early in the morning, and on the same day gently tease the bright red, three-filament stigma from each flower and dry them. It takes about 150,000 flowers to produce a kilogram (2.2 pounds) of saffron. ... Little wonder, then, that the precious powder has spawned a trade rife with the kind of deceptions and distortions typical of traffic in gems or illicit drugs: cheap substitutes, diluted shipments, false labeling. ... The turbulence in the saffron market has intensified. The much-anticipated lifting of international financial sanctions against Iran after the nuclear accord last spring has led to brisk saffron speculation inside Iran. (Saffron is several times cheaper here than in Europe, where the retail price can soar to 20,000 euros a kilogram, or about $10,000 a pound).