Date: 2/11/2005 35:34 PM
Author: pqcollectibles
A feather is a crack and a needle is a crystal shaped like a needle.
Here''s a couple of threads about needles for you:
https://www.pricescope.com/community/threads/needles.5696/
https://www.pricescope.com/community/threads/crystals-in-diamond-are-worse-than-feathers.18367/