The thread used is a Cotton Pearl 8 from China called GT (Gold Thread). I bought a few colours of these when I visited mom in June 2009. The quality of the thread is not great but I liked the colours they had. Tat with these only if you are sure there will be no unpicking. Look out for more tatting in these threads. I just realised I could not find the colour name or number on the label. The colour is similar to DMC Perle 8 Colour #111, except this GT colour changes with less gradation.