The way to tell the quality cashmere

If I buy a pure cashmere sweater on www.ewsca-cashmere.com, how can I tell if this is high-quality?

 
Is it fuzzy?
Look closely at the clothes. There should be only a very small, sparse layer of fuzz on the top of quality cashmere products. If the piece is too fuzzy, this implies the piece is poorly manufactured or made with fibers too short to hold shape and because of this, are already starting to unravel. These items, although sometimes very soft, are sure to stretch out of shape and pill quickly.
 
Is it softly?
Cashmere is supposed to be soft, and quality cashmere will always have a lovely hand. However, just because an item is softer than another doesn't imply better quality, and sometimes actually means the opposite.
For instance, a shirt made of single ply cashmere yarn will be softer than a shirt with double ply yarn, but will pill, and lose it's shape much faster. A properly spun yarn with a tighter twist will also tend to not be as soft as a poorly spun yarn, but again, the durability and quality will be higher.

Does it hold its shape?
Stretch it! Be a little rough with it! Quality pieces will return to their original shape and not become baggy after being worn.