Colour Colour is a characteristic particular to the species. It is the presence of pigments in the sericin layers, which cause the colour. There are diverse hues of colour including but limited to white, yellow, yellowish green and golden yellow. Shape Cocoon shape, as colour, is peculiar to the given species. The deflossed cocoon has many wrinkles on its surface.
Wrinkles are coarser on the outer layer than within the interior layer.
The outline of the wrinkle is not uniform, but various according to species and breeding conditions. Spinning employs high temperature and low humidity settings, which render fine wrinkles or cotton-like textures of, cocoon layers. These provisions discourage the agglutination of the baves resulting from accelerated drying. It is recognized that coarse wrinkled cocoons reel poorly. Size Cocoon size or volume is a critical characteristic when evaluating raw materials.