Hi, There is a company called M&J Trimming located at 1008 Avenue of
the Americas in New York City. Their phone number is 1800-9MJTRIM.
I used to buy black silk cord and the woven leather cord from them
around 10 years ago. Their website is www.mjtrim.com
They have a large selection of trimmings.
Diane Sadel
http://www.sweetgemstones.com