The apple is symbolic of dangerous temptation.
Although we are not told specifically it is generally the belief that the apple is the forbidden fruit in Genesis (Chapter 3).
In children's literature, the apple becomes a poisonous nemesis for Princess Snow White, whilst in CS Lewis's Narnia; Digory resists temptation to eat an apple that will otherwise save his own Mother’s life.
La Pomme de L'œil (The apple of my eye) represents this sensuality and sometimes dangerous temptation.
Was it not the succulent juicy red apple that first caught your eye?
Equipment Canon EOS 20d f11 5 seconds Tripod