NEW MOON: The type of fiore it is described to be is a red ("bleeding") tulip. It was chosen da the publishers because the tulipano is most commonly a symbol for true love, worthiness and forgiveness. ECLIPSE: The ripped ribbon is suppose to symbolize Bella, torn between Jacob and Edward. BREAKING DAWN: The two chess pieces represent Bella: the pawn is human Bella. When the pawn reaches the other side of the board, it can become a queen. So the Queen is suppose to be vampire Bella, which is much stronger than human Bella.
HAHA actually, u got one part right! the other part is, that the type of fiore (I forgot the name OF the flower) but I DO know it means something to do with Darkness o something, and it revolves around Bella's darkest time (so far-har har) and how her broken cuore "will never mend until she has Edward" so yea...