I purchase all of my silk thread from Artbeads. The prices are excellent, shipping is fast, and quality is of the best.
Griffin silk cord is the best. My first time knotting pearls and the finished project looks terrific. No kinks or splitting of the thread and the knots are perfectly sized. The attached needle is so handy.
Between having a needle already included and the cord standing up to sharp edges of glass this stuff is amazing! It's extremely easy to use and the beads slide down the cord with ease.
I use this for knotted necklaces. It's easy to use and the finished necklace looks great.