Many people don’t know the facts about silk and satin. After all, they are both smooth to the touch. They both are also shiny to look at, right? People love them both for their look and feel. So, what is the Difference between Silk and Satin? The main difference is that silk is a natural fabric and satin is a wrap-dominated weaving technique. Silk is shiny from both sides but satin has a glossy surface and dulls back.