loycos:

ok people are theorizing Rainbow Quartz has two sets of eyes because Rose and Pearl come from very different places of mind.

but consider this: Pearl and Amethyst, from what we’ve learn so far, have quite a similar view of themselves (low self esteem; measure themselves by how people they value see them; constant need for reassurance from outside factors). however, each has a different way of handling (and hiding) the same issues (Pearl’s perfectionism and high strung attitude; Amethyst’s laid back ‘i don’t care what you think’ facade).

they think alike but act differently upon it.

Opal has one set of eyes and two sets of arms.