Negin belongs to a new variety of saffron that is longer and thicker than common saffron. This kind of saffron is pure and contains the stigma without the style. The red stigmas along with parts of the style (yellow part) cut in the beginning of the harvesting season.The yellow and pale part of the saffron filaments. It comes in two levels of quality. The entire saffron filament including the red and the yellow parts, bunched together with a string.he red stigmas along with parts of the style (yellow part) cut in the beginning of the harvesting season. The yellow and pale part of the saffron filaments. It comes in two levels of quality. The entire saffron filament including the red and the yellow parts, bunched together with a string.