Differences in quality are generally associated with differences in the total length of the fibre strands. With increase in their average length, the mass of unit length of strands increases. It has been observed that the fibre which feels heavier in the hand tends to have higher spinning quality.

The natural fibre colour of white jute is white creamy and that of tossa jute is golden. Any adverse deviation from the natural colour is considered to be bad. Lustre is a characteristic of shine when light falls on the fibre. The more the shine, the better the quality.

This is a very important characteristic. The stronger the fibre the better the quality. No product can be made from weak fibre. The strength is divided into five levels, viz. very strong, strong, sound, average and any strength.

The finer and stronger the fibre, the better the quality.