Yes, authentic grasscloth wallpaper will always have visible seams.  The product is handmade and woven with natural plant fibers that give the finished product a certain unevenness and no pattern match. Corks, Micas and Paper Weaves have seams that are less visible. Being handmade and hand dyed, it is common that shades will vary from roll to roll, and from end to end of a single roll.  This is the natural look of grasscloth.