When buying a new silk pillowcase, you have to take into account that most of the products and prices on this list are for only one standard, queen or king size. Buying two or more pillowcases will be more expensive. However, the Jocoku 100% Mulberry Silk Pillowcase is a great value — you get a set of two for under $35. There are four sizes and eight colors to choose from, and it even comes with a hidden zipper to keep your pillow in place. Even if you don’t need two pillowcases, one can make a great gift. However, do not machine-wash.