Shagreen is defined as : an untanned leather covered with small round granulations and usually dyed green OR : the rough skin of various sharks and rays when covered with small close-set tubercles. This material (real and Faux) is used in interior design on furniture, wall coverings, flooring and accessories. It has seen a huge rise in popularity in recent years and I absolutely love it! It's a great unexpected texture and luxurious element in any room. I love this wallcovering from Ralph Lauren!!