One of the worlds finest fibres
The British wool marketing board uses several tables, including the broad ford count, to determine wool quality. These tables include fineness, staple length, presences of outer hair, lustre, crimp, vulnerability to chemical damage, etc. Listed below is the fineness chart which gives the diameter of the fibre in microns ( 1 micron = 1/1000 millimetre ), The information is from the British wool marketing board and other sources.
Animal Fibre Diameter (Microns)
Cashmere 15-19
Camel Down 16-25
Merino 12-20
Chinchilla 21
Mohair 25-45
Alpaca 27.7
Llama 20-30