silk thread

Two types of silk thread are shown here: Kreinik Silk Mori, a spun silk (the skeins) and Kreinik Silk Serica, a filament silk (the spools). You can see the difference in texture and sheen. From http://www.kreinik.com/shops/Silk-Threads/
3 Reasons To Try Silk Thread

It is soft, beautiful, rich in color, and has been used in needlework for centuries:…