If you asked someone what the difference was between wool and cashmere, they might not know the exact answer. What they could probably tell you is that wool is rough and cashmere is very soft. That is about the same as when you compare regular silk with mulberry silk. The difference is significant.
Mulberry silk only comes from China. The silk worms used to produce this silk are only fed leaves from mulberry trees. It could be compared to grain fed beef. What they eat makes a huge difference. When silk worms are fed mulberry leaves, it causes the cocoon they spin to be much finer with longer fibers. The longer fibers makes finer silks. Mulberry silk is also hypoallergenic, which is something you might not expect.
This is also why mulberry silk cost more than other silk that you can purchase that is made in other places besides China. When you want the finest, there is usually a higher price to pay for it. Some of the best brands for mulberry sheet sets are Taihu Snow and LilySilk, just to name a couple.
I visited http://bedspace.net/ and found even more reputable silk sheet brand names to choose from along with much more information about mulberry silk. I would never choose any other silk sheets besides mulberry because to me, it just simply would not be worth the money.