The abalone based products are real shells and shouldn't fade over time, unless maybe they get worn or your water balance gets way out of whack for an extended period. Interestingly, the Shimmering Sea in my Ocean Blue has actually become more vivid after a year. It may have just been residual plaster residue that came off, but they are very vivid, and look amazing in the sun! I get so many compliments on them. It's one of the first things people notice about the finish.