I agree. I would look in the range 1.3-1.5.I would go in the 1.5ct range, if money were no object.
It also depends on what you look like and how visible your ears are with hair. My mother, for example, has dark hair and very small earlobes so earrings wear very large on her. In fact, many of her pendants have stones larger than her earrings and they look just fine.