When they emerge from the cocoons, a month has elapsed, and the female moths will start this short cycle again with egg-laying. The finest quality silk comes from the middle section of this long filament, because this is the part that is the most consistent and uniform in thickness. This type is used for weaving damask because its dullness contrasts nicely with the shinier organzine variety. The filaments are so intertwined that it is impossible for them to be evenly reeled, resulting in an uneven and nubby yarn. This kind is often confused with raw silk, but unlike raw silk its lusterlessness is not caused by retention of gum.
Silk velvet is the softest of the velvets.